Mechanisms of Antibiotics Resistance
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Questions and Answers

What was the first antibiotic discovered to be effective against which bacteria?

  • Fungi, especially candida
  • Gram-negative bacteria, especially E. coli
  • Protozoa, especially plasmodium
  • Gram-positive bacteria, especially staphylococci and streptococci (correct)

What is the primary consequence of antibiotic resistance among bacterial pathogens?

  • Increased difficulty in treating infections (correct)
  • Reduced use of antibiotics in medicine
  • Decreased toxicity of antibiotics to humans
  • Increased production of antibiotics

What is the result of the development of thousands of variants and analogues of antibiotics?

  • Reduced production of antibiotics
  • Increased resistance to antibiotics
  • Increased use of antibiotics in medicine
  • Varying effects on different infectious organisms and less toxicity to humans (correct)

Which bacterium's resistance to penicillin in the 1980s exemplifies the detrimental effects of antibiotic resistance?

<p>Streptococcus pneumoniae (B)</p> Signup and view all the answers

What is the outcome of the evolution of bacteria causing common infections to be resistant to most or all available antibiotics?

<p>Infections become harder to treat and increase the likelihood of spreading to others (C)</p> Signup and view all the answers

What is the primary concern related to antibiotic resistance?

<p>Antibiotics becoming ineffective treatments (A)</p> Signup and view all the answers

What is the primary mechanism of gene transfer in conjugation?

<p>Using a pilus to transfer a plasmid (B)</p> Signup and view all the answers

What is the current treatment failure rate in patients with pneumococcal meningitis in the US due to antibiotic resistance?

<p>38% (D)</p> Signup and view all the answers

What is the name of the enzyme produced by some bacteria that breaks down the -lactam ring of antibacterial drugs?

<p>Penicillinase (A)</p> Signup and view all the answers

What is the term for the exchange of genetic material between bacteria through mobile DNA packages?

<p>Horizontal gene transfer (D)</p> Signup and view all the answers

What is the main consequence of antibiotic resistance on health insurance companies and governments that subsidize healthcare costs?

<p>Increased medical costs (B)</p> Signup and view all the answers

What is the primary mechanism of antibiotic resistance in efflux pump systems?

<p>Expelling antibiotics from the cell (B)</p> Signup and view all the answers

What is the definition of antibiotic resistance?

<p>When bacteria change in a way that reduces or eliminates the effectiveness of antibiotics (D)</p> Signup and view all the answers

What is the term for the process of bacterial cells becoming competent to receive DNA?

<p>Artificial competence (A)</p> Signup and view all the answers

What is the name of the first antibiotic discovered in 1928?

<p>Penicillin (A)</p> Signup and view all the answers

What is the role of two-component regulatory systems in efflux pump systems?

<p>To control the expression of efflux pump genes (A)</p> Signup and view all the answers

What is the percentage of hospital admissions due to adverse effects of antibiotic therapy?

<p>10% (B)</p> Signup and view all the answers

What is the main reason for the increased cost of newer antibiotics?

<p>They are available in intravenous form only (B)</p> Signup and view all the answers

What is the result of the overexpression of efflux pumps in bacteria?

<p>Multidrug resistance (B)</p> Signup and view all the answers

What is the current focus of research in efflux pump systems?

<p>Developing efflux pump inhibitors to increase antibiotic effectiveness (B)</p> Signup and view all the answers

What is the result of the unrestricted use of broad-spectrum antibiotics on the human body?

<p>It alters the microbial ecology of the human body (C)</p> Signup and view all the answers

What is the characteristic of many efflux pumps that leads to multidrug resistance?

<p>Broad substrate specificity (C)</p> Signup and view all the answers

What is the name of the process where a microorganism acquires genes from another without being the offspring of that microorganism?

<p>Horizontal gene transfer (C)</p> Signup and view all the answers

What is the term for the incorporation of naked DNA into a bacterial cell's chromosome?

<p>Transformation (D)</p> Signup and view all the answers

What is the mechanism of gene transfer that involves transferring genes from one bacterium to another as 'naked' DNA?

<p>Transformation (D)</p> Signup and view all the answers

What is the result of antibiotic resistance on the natural history of diseases?

<p>It has changed the natural history of diseases (C)</p> Signup and view all the answers

What is the primary consequence of enzymatic inactivation of antibiotics?

<p>Reduced effectiveness of antibiotics (C)</p> Signup and view all the answers

Which type of antibiotic resistance is highly effective and has led to bacterial resistance to certain antibiotic groups?

<p>Enzymatic inactivation (D)</p> Signup and view all the answers

What is the function of the enzyme produced by MRSA super bacteria that splits the complex before acetylating the antibiotic?

<p>Transpeptidase (C)</p> Signup and view all the answers

What is the primary mechanism of action of macrolide antibiotics like erythromycin and clarithromycin?

<p>Inhibiting protein synthesis (B)</p> Signup and view all the answers

What is the primary function of beta-lactamase enzymes produced by bacteria?

<p>Breaking the beta-lactam ring of antibiotics (C)</p> Signup and view all the answers

What is the consequence of target modification in high-level Tcr Mpr bacteria?

<p>A 100-fold decrease in antibiotic potency (A)</p> Signup and view all the answers

What is the primary function of erythromycin esterase (EreA) in macrolide resistance?

<p>Catalyzing the hydrolytic cleavage of the lactone ring (A)</p> Signup and view all the answers

What is the primary mechanism of antibiotic resistance resulting from the presence of Erm genes and their encoded enzymes?

<p>Ribosome methylation (C)</p> Signup and view all the answers

What is the primary consequence of the production of beta-lactamase enzymes by bacteria?

<p>Inactivation of antibiotics before they reach their target (C)</p> Signup and view all the answers

What is the primary mechanism of antibiotic resistance resulting from the modification of target enzymes?

<p>Weak positive selection process (C)</p> Signup and view all the answers

What is the mechanism by which Kmr bacteria are resistant to aminoglycoside antibiotics?

<p>By acquiring a phosphotransferase enzyme that inactivates them (A)</p> Signup and view all the answers

What is the effect of the chloramphenicol acetyltransferase enzyme on the antibiotic chloramphenicol?

<p>It decreases the binding affinity of chloramphenicol to its target (A)</p> Signup and view all the answers

What is the mechanism of action of the erythromycin resistant methylase enzyme?

<p>It methylates the target site of erythromycin, making it inaccessible (D)</p> Signup and view all the answers

What is the effect of aminoglycoside modifying enzymes on the binding of aminoglycosides to the 30S subunit of the bacterial ribosome?

<p>It decreases the binding affinity of aminoglycosides to the 30S subunit (A)</p> Signup and view all the answers

What is the mechanism of high-level resistance to vancomycin in Enterococcus faecium?

<p>Substitution of cell wall precursors with those that have no affinity for vancomycin (B)</p> Signup and view all the answers

What is the role of biofilm formation in the development of antibiotic resistance?

<p>It reduces the efficacy of antibiotics by encasing the bacteria in an extracellular polymeric matrix (B)</p> Signup and view all the answers

What is the effect of phenotypic changes in biofilm bacteria on the efficacy of antibiotics?

<p>It decreases the efficacy of antibiotics by making the bacteria less susceptible (B)</p> Signup and view all the answers

What is the mechanism of aminoglycoside resistance in P.aeruginosa biofilms?

<p>Inhibition of aminoglycoside uptake by high-affinity mechanisms (D)</p> Signup and view all the answers

What is the effect of the acquisition of resistance genes by biofilm bacteria on the efficacy of antibiotics?

<p>It decreases the efficacy of antibiotics by making the bacteria less susceptible (D)</p> Signup and view all the answers

What is the mechanism of target modification in the resistance of bacteria to antibiotics?

<p>Reversible target site modifications that decrease the binding affinity of an antibiotic to its target (A)</p> Signup and view all the answers

Why are antibiotics sometimes ineffective against biofilm infections?

<p>As a result of physicochemical interactions between the drug and the biofilm matrix (B)</p> Signup and view all the answers

What contributes to the high antibiotic resistance in biofilms?

<p>Expression of specific genes different from planktonic cells (C)</p> Signup and view all the answers

How does the extracellular matrix of biofilms impact antibiotic effectiveness?

<p>It absorbs the antibiotics preventing them from reaching their target cells (A)</p> Signup and view all the answers

Why are biofilm infections challenging to treat with antibiotics?

<p>They secrete substances that act as barriers to antimicrobial agents (C)</p> Signup and view all the answers

What effect does nutrient limitation in biofilm cells have on antibiotic tolerance?

<p>Increases antibiotic tolerance (C)</p> Signup and view all the answers

In the context of antibiotic resistance, why are medical devices frequent targets for colonization and infection?

<p>Medical devices provide surfaces for biofilm attraction (A)</p> Signup and view all the answers

What role does the proximity of resistance play in the persistence of biofilm infections?

<p>It increases the cost and reduces risks of recurrent infection (D)</p> Signup and view all the answers

How do biofilms differ from planktonic cells in terms of antibiotic resistance?

<p>Planktonic cells express different genes (C)</p> Signup and view all the answers

Why does antibiotics resistance in biofilms lead to ineffective treatments?

<p>Imbalance between slow-releasing antibiotics and rapid bacterial proliferation (C)</p> Signup and view all the answers

Why are high antibiotic dose strategies generally less preferred in treating biofilm infections?

<p>Higher risk of side effects and drug toxicity (B)</p> Signup and view all the answers

What is a key characteristic of efflux pumps in bacteria?

<p>They transport substrates across a lipid membrane actively. (B)</p> Signup and view all the answers

Which bacterial efflux pump system is known for moving tetracycline out of bacterial cells?

<p>RND system (D)</p> Signup and view all the answers

What is the main role of the MtrCDE system in Neisseria gonorrhoeae?

<p>Promoting virulence and colonization in the human body (B)</p> Signup and view all the answers

Which statement correctly describes the mechanism of efflux pumps in bacteria?

<p>They can be found exclusively in Gram-positive bacteria. (A)</p> Signup and view all the answers

What role does the MtrR protein play in controlling the MtrCDE operon?

<p>Binds antibacterial compounds to repress MtrCDE operon expression (B)</p> Signup and view all the answers

Which component is responsible for energizing the efflux pump process in bacteria?

<p>Cytoplamic membrane protein (A)</p> Signup and view all the answers

Which bacterial organism has a well-known efflux pump system for moving tetracycline out of its cells?

<p>Escherichia coli (B)</p> Signup and view all the answers

What is the role of the adaptor protein in efflux pump systems?

<p>Linking the efflux pump to the periplasmic protein (D)</p> Signup and view all the answers

Which mechanism enables efflux pumps in bacteria to transport substrates across the cell envelope?

<p>Proton motive force (B)</p> Signup and view all the answers

How do efflux pumps support bacterial resistance to antimicrobial agents?

<p>By maintaining a more toxic intracellular environment (C)</p> Signup and view all the answers

What is the primary function of an antiporter in an efflux pump system?

<p>To exchange antibiotics with less harmful substances (D)</p> Signup and view all the answers

How do bacteria recognize and transport antibiotics through the efflux mechanism?

<p>Through a specific or non-specific substrate recognition (C)</p> Signup and view all the answers

What is the primary characteristic of the five classes of efflux systems in bacteria?

<p>They use different energy sources and transporters (C)</p> Signup and view all the answers

What is the purpose of the energy-dependent mechanism of efflux in bacteria?

<p>To remove antibiotics from the cell (A)</p> Signup and view all the answers

What is the most common type of antibiotic efflux system in bacteria?

<p>MF superfamily (D)</p> Signup and view all the answers

How do efflux pumps in bacteria transport antibiotics across the membrane?

<p>Through an active transport process using ATP (D)</p> Signup and view all the answers

What is the primary reason for physicians prescribing antibiotics for viral infections?

<p>To satisfy patient expectations (C)</p> Signup and view all the answers

What is the estimated percentage of hospital prescriptions that are not optimally effective?

<p>50% (D)</p> Signup and view all the answers

In which country did a study find that 57% of the population had self-medicated with antibiotics?

<p>Macedonia (C)</p> Signup and view all the answers

What is the primary reason for the agricultural use of antibiotics?

<p>To promote growth and prevent disease (C)</p> Signup and view all the answers

What is the consequence of delaying antibiotic prescription for conditions where they may be necessary?

<p>Increased morbidity and mortality (C)</p> Signup and view all the answers

What is the result of the misuse and overuse of antibiotics in households?

<p>Increased antibiotic resistance (C)</p> Signup and view all the answers

What is the characteristic of antibiotic prescriptions in developing countries?

<p>Non-essential and incorrect doses (C)</p> Signup and view all the answers

What is the effect of education campaigns on antibiotic use?

<p>Reduced antibiotic use (C)</p> Signup and view all the answers

What is the consequence of self-medication with antibiotics?

<p>Increased selection pressure for resistant strains (B)</p> Signup and view all the answers

What is the primary concern related to antibiotic use in animal agriculture?

<p>Poor animal husbandry practices (A)</p> Signup and view all the answers

What is the consequence of antibiotic inactivation by enzymes such as beta lactamases?

<p>Rendering the antibiotic useless (A)</p> Signup and view all the answers

What is a contributing factor to antibiotic resistance?

<p>Misuse of antibiotics, particularly in unsupervised medication (C)</p> Signup and view all the answers

What is the result of the selection of resistant strains of bacteria due to antibiotic use?

<p>Patients will suffer life-threatening complications (D)</p> Signup and view all the answers

What is the concern regarding antibiotic use in animal husbandry?

<p>Antibiotic-resistant strains developed in animals can be transferred to humans (B)</p> Signup and view all the answers

What is the consequence of antibiotic-induced gene mutations?

<p>Inherited mutations in the bacteria's genes (D)</p> Signup and view all the answers

What is the result of the widespread use of antibiotics?

<p>The development of 'superbugs' resistant to most antibiotics (A)</p> Signup and view all the answers

What is the primary mechanism of action of the AcrAB-TolC efflux system in Escherichia coli?

<p>Recognizing and expelling various substrates (D)</p> Signup and view all the answers

Which of the following mechanisms is NOT associated with the QacA multidrug efflux pump in Staphylococcus?

<p>Inactivation of antibiotics by enzymes (C)</p> Signup and view all the answers

What is the consequence of the misuse of antibiotics in human medicine and animal husbandry?

<p>Antibiotic-resistant bacteria will pose significant problems to medical health and the economy (D)</p> Signup and view all the answers

What is the primary factor contributing to antibiotic resistance?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary function of the ribosomal protection mechanism in Bacillus?

<p>Transfer of an ATP-binding ribosomal protein and phosphorylation of a hydrolytic enzyme (D)</p> Signup and view all the answers

What is the consequence of the overuse of antibiotics?

<p>The development of antibiotic-resistant bacteria (D)</p> Signup and view all the answers

Which of the following antibiotics is NOT affected by the production of beta-lactamase enzymes?

<p>Erythromycin (B)</p> Signup and view all the answers

What is the primary mechanism of action of the SatAB efflux system in E. faecium?

<p>Recognizing and expelling various substrates (C)</p> Signup and view all the answers

What is the result of the use of antibiotics in preventing diseases in animals?

<p>Antibiotic-resistant bacteria will develop and pose a risk to human health (D)</p> Signup and view all the answers

Which of the following is a consequence of antibiotic modification in bacteria?

<p>Altered target site of the antibiotic (A)</p> Signup and view all the answers

What is the primary mechanism of action of the carbapenemase enzymes produced by certain Enterobacteriaceae?

<p>Hydrolyzing carbapenems to inactive metabolites (C)</p> Signup and view all the answers

Which of the following is an example of an antibiotic modification mechanism?

<p>Acetylation of tetracycline (C)</p> Signup and view all the answers

What is the primary mechanism of action of the erythromycin esterase enzyme in bacteria?

<p>Splitting the antibiotic into inactive products (A)</p> Signup and view all the answers

Which of the following is a consequence of changes in porin proteins in bacteria?

<p>Channels too small for antibiotic molecules to enter (A)</p> Signup and view all the answers

What is the primary factor contributing to antibiotic resistance due to the misuse of antibiotics?

<p>Insufficient knowledge on proper antibiotic use (D)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the health system?

<p>Reduced support for good health policy making (B)</p> Signup and view all the answers

What is the main reason for limited access to adequate healthcare among certain groups?

<p>Poverty and limited access to resources (B)</p> Signup and view all the answers

What is the percentage of respondents who believe the best treatment for a cold is antibiotics?

<p>25% (A)</p> Signup and view all the answers

What is the consequence of patients' unrealistic expectations of antibiotics?

<p>Reduced willingness to pay for antibiotic research (B)</p> Signup and view all the answers

What is the primary factor contributing to the lack of understanding of antibiotic resistance among health workers and policymakers?

<p>Complexity of antibiotic resistance (D)</p> Signup and view all the answers

What is the role of the public in overseeing and improving the health system and policies related to antibiotic use?

<p>To play a role in improving the health system and policies (D)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the health system and policy making?

<p>Reduced support for good health policy making (B)</p> Signup and view all the answers

What is the primary factor contributing to the misuse of antibiotics?

<p>Insufficient knowledge on proper antibiotic use (A)</p> Signup and view all the answers

What is the consequence of reduced antibiotic use in the health system?

<p>Reduced antibiotic resistance (A)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance in developing countries?

<p>Higher disease and mortality rates (B)</p> Signup and view all the answers

What is the concern regarding the spread of resistant strains from developing countries to developed countries?

<p>High morbidity and mortality rates (D)</p> Signup and view all the answers

What is the result of comparing antibiotic resistance in different regions?

<p>A global view of antibiotic resistance (D)</p> Signup and view all the answers

What is the risk of importing resistant strains of bacteria through international travel?

<p>High risk of transmission (B)</p> Signup and view all the answers

What is the concern regarding the spread of infectious diseases through global travel and migration?

<p>Increased disease transmission (B)</p> Signup and view all the answers

What is the primary factor contributing to the high rates of antibiotic resistance in developing countries?

<p>Inadequate infection prevention and control (D)</p> Signup and view all the answers

What is the consequence of the transmission of resistant strains from developing countries to developed countries?

<p>High morbidity and mortality rates (C)</p> Signup and view all the answers

What is the risk of refugees and immigrants returning to their countries of origin carrying resistant strains of bacteria?

<p>High risk of transmission (D)</p> Signup and view all the answers

What is the main consequence of poor hand hygiene in healthcare settings?

<p>Higher rates of infection transmission (C)</p> Signup and view all the answers

What is the concern regarding the importation of infectious diseases through international travel?

<p>Increased disease transmission (D)</p> Signup and view all the answers

What is the primary purpose of sterilization in medical and surgical procedures?

<p>To eliminate or destroy all forms of microbial life (C)</p> Signup and view all the answers

What is the consequence of the spread of antibiotic-resistant bacteria across borders?

<p>High morbidity and mortality rates (A)</p> Signup and view all the answers

What is the term for the process of eliminating or destroying pathogenic organisms using chemicals on inanimate objects and surfaces?

<p>Disinfection (B)</p> Signup and view all the answers

What is the primary reason for low adherence to hand hygiene practices in healthcare settings?

<p>Skin irritation and dryness (B)</p> Signup and view all the answers

What is the concern regarding the rise in international travel and commerce?

<p>Increased disease transmission (A)</p> Signup and view all the answers

What is the result of poor sanitation and hygiene practices in healthcare settings?

<p>Higher rates of infection transmission (A)</p> Signup and view all the answers

What is the primary factor contributing to the spread of infectious diseases across international borders?

<p>Inadequate infection prevention and control (B)</p> Signup and view all the answers

What is the primary reason for the high rates of resistant tuberculosis in developing countries?

<p>Inadequate infection prevention and control (A)</p> Signup and view all the answers

What is the primary benefit of the World Health Organization's 'five moments for hand hygiene' framework?

<p>Improving hand hygiene compliance (D)</p> Signup and view all the answers

What is the primary consequence of failure to prevent and control infections in healthcare settings?

<p>Higher rates of infection transmission (A)</p> Signup and view all the answers

What is the primary reason large pharmaceutical companies are not developing new antibiotics?

<p>The market does not value a novel antibiotic at a price that can offset its development costs (B)</p> Signup and view all the answers

What is the estimated cost of developing new antibiotics?

<p>$90 million (D)</p> Signup and view all the answers

What is a consequence of labeling restrictions on new antibiotics?

<p>Decreased treatable population and potential revenue (C)</p> Signup and view all the answers

Why do large pharmaceutical firms find it difficult to compete with generic antibiotics?

<p>New antibiotics are not superior in terms of price and efficacy (B)</p> Signup and view all the answers

What is the impact of stringent regulatory requirements on antibiotic development?

<p>Increased development cost (C)</p> Signup and view all the answers

What is the consequence of the decline in pharmaceutical investment in antibiotic development?

<p>A future shortfall of new antibiotics (C)</p> Signup and view all the answers

What is the primary source of antibiotic resistant genes in water systems?

<p>Environmental bacteria (C)</p> Signup and view all the answers

What is the main mechanism of gene transfer in the environment?

<p>All of the above (D)</p> Signup and view all the answers

What is the significance of transformation in the context of antibiotic resistance?

<p>It allows for the exchange of genetic information between different species (C)</p> Signup and view all the answers

What is the primary consequence of the presence of antibiotic resistant genes in the environment?

<p>Increased antibiotic resistance in human pathogens (B)</p> Signup and view all the answers

What is the role of mobile genetic elements in the transmission of antibiotic resistance?

<p>They facilitate the transfer of antibiotic resistance genes (D)</p> Signup and view all the answers

What is the primary strategy for reducing the spread of antibiotic resistance genes?

<p>Reducing the transmission of resistant pathogens (D)</p> Signup and view all the answers

What is the primary mechanism of antibiotic resistance in bacteria?

<p>Horizontal gene transfer (B)</p> Signup and view all the answers

What is the significance of antibiotic residues in the environment?

<p>They can be biodegraded into metabolites with greater biological activity (D)</p> Signup and view all the answers

What is the primary concern related to the use of older antibiotics to treat resistant infections?

<p>They may accelerate the development of resistance (D)</p> Signup and view all the answers

What is the primary strategy for preventing the further spread of antibiotic resistance genes?

<p>Blocking transmission from known resistant pathogens (C)</p> Signup and view all the answers

What is the primary mechanism of horizontal gene transfer in conjugation?

<p>Via direct contact through a conjugation pilus (B)</p> Signup and view all the answers

What is the result of interrupted DNA transfer during conjugation?

<p>No resistance gene is transferred (B)</p> Signup and view all the answers

What is the characteristic of antibiotic resistance genes in the donor cell?

<p>They are generally detrimental to the cell (B)</p> Signup and view all the answers

What is the mechanism of mutation and selection in bacteria?

<p>All of the above (D)</p> Signup and view all the answers

What is the consequence of inadequate surveillance and monitoring of antibiotic resistance?

<p>The lack of valuable resistance pattern data (C)</p> Signup and view all the answers

What is the result of the selection of mutated bacteria?

<p>The mutated bacteria outcompete non-mutated bacteria (A)</p> Signup and view all the answers

What is the characteristic of conjugative plasmids?

<p>They can transfer themselves and non-conjugative plasmids (A)</p> Signup and view all the answers

What is the consequence of antibiotic resistance without selective pressure?

<p>The mutated bacterium has a significant fitness advantage (B)</p> Signup and view all the answers

What is the primary mechanism of transduction?

<p>Through bacteriophage (C)</p> Signup and view all the answers

What is the result of the spread of antibiotic resistance genes?

<p>The spread of antibiotic resistance to other bacteria (D)</p> Signup and view all the answers

What is the estimated annual cost of antibiotic resistance in the United States?

<p>US $4-5 billion (B)</p> Signup and view all the answers

What is the projected number of MRSA-attributable deaths annually in the United States by 2020 if no alternatives are found?

<p>55,000 (B)</p> Signup and view all the answers

What is the primary goal of antibiotic stewardship programs?

<p>To reduce selective pressures that drive antibiotic resistance (D)</p> Signup and view all the answers

What is the consequence of prolonged illness in patients with resistant infections?

<p>Amplified transmission of resistant strains (B)</p> Signup and view all the answers

What is the estimated additional annual cost of treating resistant infections in the European Union?

<p>€1 billion (B)</p> Signup and view all the answers

What is the purpose of informative-based antibiotic stewardship programs?

<p>To increase prescribers' knowledge about current antibiotic recommendations (A)</p> Signup and view all the answers

What is the consequence of the lack of effective therapy for resistant organisms?

<p>Treatment failure and death (C)</p> Signup and view all the answers

What is the projected number of P.aeruginosa-attributable deaths annually in the United States by 2020 if no alternatives are found?

<p>35,000 (D)</p> Signup and view all the answers

What is the primary benefit of antibiotic stewardship programs?

<p>Optimizing patient outcomes (A)</p> Signup and view all the answers

What is the consequence of increased antibiotic consumption in patients with resistant infections?

<p>Amplified transmission of resistant strains (C)</p> Signup and view all the answers

What is the primary challenge in monitoring antimicrobial resistance in the community sector?

<p>Poor coordination and enforcement of data collection (A)</p> Signup and view all the answers

What is the main reason for the lack of understanding of resistance patterns in the general population?

<p>Most data comes from studies of hospital patients or high-risk groups (B)</p> Signup and view all the answers

What is the primary consequence of the link between antibiotic exposure and resistance in common pathogens?

<p>Emergence of resistant strains in the clinical setting (C)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance on patient outcomes?

<p>Increased morbidity and mortality (D)</p> Signup and view all the answers

What is the primary limitation in monitoring the impact of antibiotic use on resistance?

<p>Limited availability of antibiotic use data in humans and animals (B)</p> Signup and view all the answers

What is the primary challenge in establishing a clear global picture of antibiotic resistance?

<p>Large disparities in surveillance data availability and quality between regions (D)</p> Signup and view all the answers

What is the estimated cost of treating antibiotic-resistant infections in the United States?

<p>$3.1 billion annually (D)</p> Signup and view all the answers

What is the primary reason for increased healthcare costs due to antibiotic resistance?

<p>Prolonged hospital stays and alternative medications (B)</p> Signup and view all the answers

What is the main reason for the limited knowledge about the volume and pattern of antibiotic use in humans and animals?

<p>Limited availability of antibiotic use data in humans and animals (B)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the healthcare system?

<p>Increased hospital days and complicated surgical procedures (C)</p> Signup and view all the answers

What is the primary focus of monitoring resistance at local, national, and international levels?

<p>Establishing a clear global picture of antibiotic resistance (D)</p> Signup and view all the answers

What is the primary reason for the lack of data on resistance rates in the community sector?

<p>Inadequate surveillance systems in the community sector (A)</p> Signup and view all the answers

What is the primary factor contributing to antibiotic resistance in certain populations?

<p>Lower socio-economic status (C)</p> Signup and view all the answers

What is the primary consequence of the switch to outpatient treatment of common childhood ear infections with amoxicillin?

<p>Reduced antibiotic selection of penicillin-resistant strains (D)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on disease transmission?

<p>Increased risk of disease transmission (B)</p> Signup and view all the answers

What is the primary consequence of treatment failures due to antibiotic resistance?

<p>Increased morbidity and mortality (C)</p> Signup and view all the answers

What is the primary challenge in confirming the link between antibiotic exposure and resistance?

<p>Antibiotic-resistant strains are often less virulent than their susceptible counterparts (B)</p> Signup and view all the answers

What is the estimated number of additional deaths due to antibiotic resistance at an average level of resistance?

<p>100,000 (C)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance on the economy?

<p>Increased healthcare costs and lost productivity (B)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance on public health?

<p>Increased risk of disease outbreaks and epidemics (B)</p> Signup and view all the answers

What is a key hindrance to the economic viability of producing new antibiotics?

<p>Potential resistance leading to drug ineffectiveness (C)</p> Signup and view all the answers

What is a common misconception associated with resistance genes in the environment?

<p>They exhibit the same behavior as pollutants (B)</p> Signup and view all the answers

Why do many pharmaceutical companies opt for more lucrative therapeutic agents over antibiotic research?

<p>Higher chance of regulatory approval for non-antibiotic drugs (B)</p> Signup and view all the answers

What contributes significantly to the complexity of developing new antibiotics according to the text?

<p>Similarities in costs and risks with anti-cancer drugs (A)</p> Signup and view all the answers

What role does the widespread use of antibiotics play in selecting for antimicrobial resistance?

<p>Accelerating the evolution of harmless organisms into pathogens (C)</p> Signup and view all the answers

What is a factor contributing to regulatory complexity in the development of new antibiotics in comparison to other pharmaceuticals?

<p>High cost of conducting clinical trials for new antibiotics (D)</p> Signup and view all the answers

What is a distinguishing feature of antibiotics compared to other pharmaceuticals in terms of economic return?

<p>Antibiotics have higher cost-effectiveness requirements (B)</p> Signup and view all the answers

What is expected to happen with resistance genetic elements in the case of strong antibiotic selection over time?

<p>They will concentrate and fixate in specific bacterial species and strains (C)</p> Signup and view all the answers

Why do many companies find antibiotic research less economically viable compared to other therapeutic agents?

<p>Fear of newer antibiotics facing resistance (A)</p> Signup and view all the answers

What possible environmental consequence is highlighted in the text due to antibiotics discharged into water systems?

<p>Creation of reservoirs for resistance genes and new pathogens (D)</p> Signup and view all the answers

What is the primary reason antibiotics are an attractive investment for pharmaceutical companies?

<p>Cost-effective translation from academic research (B)</p> Signup and view all the answers

How do surveillance cultures help in hospitals?

<p>Detect antibiotic-resistant strains (B)</p> Signup and view all the answers

What is a significant drawback of using surveillance cultures for detecting resistant strains in hospitals?

<p>Time-consuming process (A)</p> Signup and view all the answers

What method has an Australian research group developed to detect bacteria in hospitals?

<p>Machine that 'sniffs' the air (A)</p> Signup and view all the answers

How is a probiotic being tested against VRE to eradicate resistant organisms?

<p>By preventing bacterial colonization (A)</p> Signup and view all the answers

What have several research groups developed tests for to combat antibiotic-resistant strains?

<p>Identifying colonization of patients (B)</p> Signup and view all the answers

What role does genetic mutation play in the development of antibiotic resistance in bacteria?

<p>Increases chances of resistance (B)</p> Signup and view all the answers

Why is the development of new antibiotics crucial according to the text?

<p>To lessen the impact of resistance (B)</p> Signup and view all the answers

What is the primary drawback to the existing culture tests for detecting MRSA, as mentioned in the text?

<p>Time taken (B)</p> Signup and view all the answers

What commonly faced challenge contributes to the diminishing importance of new antibiotics in the pharmaceutical pipeline?

<p>Perceived poor financial returns (C)</p> Signup and view all the answers

What is the main factor contributing to the overprescription of newer generation broad-spectrum antibiotics?

<p>Patient expectations and the belief that more expensive and newer generation drugs are better than older ones (B)</p> Signup and view all the answers

What is the estimated percentage of antibiotics prescribed that are unnecessary or inappropriate?

<p>50% (A)</p> Signup and view all the answers

What is the primary concern related to antibiotic use in animal agriculture?

<p>The use of antibiotics in animals for food has become a concern in recent years (B)</p> Signup and view all the answers

What is the main consequence of poor infection prevention and control practices in hospitals?

<p>The number of people dying each year due to healthcare-associated infections is greater than the number of people dying from AIDS, breast cancer, or cystic fibrosis (A)</p> Signup and view all the answers

What is the percentage of patients receiving antibiotics in the United States who receive a broad-spectrum antibiotic?

<p>58% (B)</p> Signup and view all the answers

What is the main reason for the overuse of antibiotics in hospitals?

<p>The fear of legal repercussions and administrative inconvenience in hospitals (A)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance in hospitals?

<p>The increased antibiotic resistance and potential harm to patients (B)</p> Signup and view all the answers

What is the main factor contributing to the high rates of antibiotic resistance in hospitals?

<p>The overuse and misuse of antibiotics (C)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance in agriculture?

<p>The development of antibiotic-resistant bacteria in animals (A)</p> Signup and view all the answers

What is the main consequence of poor infection prevention and control practices in the community?

<p>The development of antibiotic-resistant bacteria in the community (D)</p> Signup and view all the answers

What is the primary consequence of using sub-therapeutic dosages of antibiotics in animals?

<p>Environmental effects and release of antibiotics into soil and water (C)</p> Signup and view all the answers

What is the main reason why antibiotic resistance is a significant issue in animal husbandry?

<p>Increased infection morbidity and mortality in humans (D)</p> Signup and view all the answers

How can resistant bacteria be spread between humans?

<p>Through touching an infected person's wound and then touching an object (C)</p> Signup and view all the answers

What is the primary concern regarding antibiotic resistance in medicine?

<p>Development of resistant bacterial strains that can survive treatment (A)</p> Signup and view all the answers

What is the estimated impact of antibiotic resistance on society?

<p>Increased infectious disease burdens in developing countries (D)</p> Signup and view all the answers

What is the primary mechanism of antibiotic resistance in bacteria?

<p>Horizontal gene transfer (C)</p> Signup and view all the answers

What is the consequence of inadequate infection control measures in hospitals?

<p>Increased spread of infections in hospitals (D)</p> Signup and view all the answers

What is the primary factor contributing to the spread of antibiotic resistance genes?

<p>Animal husbandry and agriculture (D)</p> Signup and view all the answers

What is the consequence of prolonged delay in developing new replacement treatments and vaccines?

<p>Increased costs of healthcare due to antibiotic resistance (D)</p> Signup and view all the answers

What is the primary source of antibiotic resistance in humans?

<p>Animal husbandry and agriculture (B)</p> Signup and view all the answers

What is the primary characteristic of XDR-TB that makes it a more severe form of TB?

<p>Resistance to all first-line TB drugs and some second-line drugs (C)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the treatment of infections?

<p>Prolonged illness and hospitalization (C)</p> Signup and view all the answers

What is the estimated cost of treating XDR-TB patients in developing countries?

<p>Up to $200,000 (B)</p> Signup and view all the answers

What is the primary reason for the increased use of broad-spectrum antibiotics?

<p>Pressure from patients to use antibiotics (B)</p> Signup and view all the answers

What is the consequence of the increase in antibiotic-resistant bacteria?

<p>Decreased treatment options (C)</p> Signup and view all the answers

What is the estimated annual spending on infections due to antibiotic resistance?

<p>$6.3 billion (D)</p> Signup and view all the answers

What is the primary consequence of the rise in antibiotic use due to bacterial infections?

<p>Increased antibiotic resistance (A)</p> Signup and view all the answers

What is the percentage of outpatient prescriptions that are unnecessary due to antibiotic resistance?

<p>40% (D)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the care of the elderly and infirm?

<p>More frequent use of costly broad-spectrum antibiotics and hospital admission (B)</p> Signup and view all the answers

What is the primary consequence of treatment failures due to antibiotic resistance?

<p>Prolonged illness and hospitalization (D)</p> Signup and view all the answers

What is one of the severe consequences of antibiotic resistance mentioned in the text?

<p>Death caused by resistant infections (B)</p> Signup and view all the answers

How does antibiotic resistance impact worker productivity?

<p>Reduces worker productivity due to increased illnesses (A)</p> Signup and view all the answers

What is the primary consequence of antibiotic resistance on the health and economy?

<p>Negation of healthcare gains and increased poverty (C)</p> Signup and view all the answers

What is a prediction regarding future antibiotic use and clinical outcomes?

<p>Clinical failure of antibiotics will occur more frequently (D)</p> Signup and view all the answers

What is the impact of antibiotic resistance on the treatment of minor infections?

<p>They can be life-threatening (C)</p> Signup and view all the answers

Why are pharmaceutical companies less inclined to invest in new antibiotics?

<p>They are less profitable and have a limited shelf life (D)</p> Signup and view all the answers

Why can some people in less developed countries face challenges in accessing treatments?

<p>The expensive and toxic treatments are beyond their reach (A)</p> Signup and view all the answers

What is expected to happen if antibiotic resistance continues unchecked?

<p>Reemergence of infectious diseases that were once nearly eradicated (B)</p> Signup and view all the answers

What is the consequence of resistant infections on productivity in developing countries?

<p>It reduces productivity and perpetuates poverty (D)</p> Signup and view all the answers

What is one of the outcomes of outbreaks caused by resistant strains in major cities?

<p>Increased infection rates among socially disadvantaged groups (C)</p> Signup and view all the answers

What is the result of the widespread loss of effective antibiotics?

<p>It negates the gains made in healthcare and economic development (C)</p> Signup and view all the answers

What is the impact of resistant infections on the healthcare system?

<p>It increases healthcare costs and reduces patient satisfaction (D)</p> Signup and view all the answers

Why can overuse and misuse of antibiotics lead to resistant strains?

<p>It accelerates the natural evolutionary process of antibiotic resistance in bacteria. (C)</p> Signup and view all the answers

What evolutionary response do bacteria have to antibiotics in order to survive?

<p>They develop ways to resist the drug's effects. (A)</p> Signup and view all the answers

What is the consequence of antibiotics losing their ability to control bacterial growth?

<p>Resistance strains of bacteria multiply in the presence of therapeutic levels. (C)</p> Signup and view all the answers

How do bacteria resist antibiotics in terms of drug inactivation?

<p>By chemically modifying antibiotics to neutralize their effect. (D)</p> Signup and view all the answers

What is the major implication for modern medicine due to the development of antibiotic resistance in bacteria?

<p>Lower effectiveness of medical procedures (B)</p> Signup and view all the answers

Which group of individuals is more susceptible to incurable infections caused by antibiotic-resistant strains?

<p>Elderly, cancer patients, and transplant patients (A)</p> Signup and view all the answers

How does bacterial resistance to antibiotics impact medical complications?

<p>It increases medical complications. (A)</p> Signup and view all the answers

What is the primary concern regarding the cost of treating infections caused by resistant bacteria?

<p>The cost is often 10-15 times higher than treating non-resistant infections. (D)</p> Signup and view all the answers

How is the cost of treating resistant infections different from non-resistant infections?

<p>It can be much higher, often 10-15 times more. (C)</p> Signup and view all the answers

What is the natural response of bacteria exposed to antibiotics to create a hostile environment?

<p>To adapt and find ways to resist the drug's effects (C)</p> Signup and view all the answers

How does the direct selection pressure on bacteria in man-made situations influence antibiotic resistance?

<p>It maintains antibiotic resistance by allowing bacteria with resistance genes to survive. (B)</p> Signup and view all the answers

What is one way antibiotic resistance is transmitted through the environment?

<p>Through the spread of already resistant organisms like MRSA. (B)</p> Signup and view all the answers

What contributes to the increased morbidity and mortality rates associated with antibiotic resistance?

<p>Difficulty in controlling infectious diseases and re-emergence of under-controlled diseases. (A)</p> Signup and view all the answers

In what way do resistant strains impact the time it takes to control diseases?

<p>They prolong illness periods and increase the time taken to control diseases. (A)</p> Signup and view all the answers

What makes long-term diseases harder to control, according to the text?

<p>The spread of untreatable resistant strains. (A)</p> Signup and view all the answers

How are tens of millions of lives at risk in developing countries due to antibiotic-resistant strains?

<p>Because antibiotics in developing countries are often too expensive. (B)</p> Signup and view all the answers

What impact does antibiotic resistance have on hospital infections in the USA according to the text?

<p>Resistant bacteria contribute to about 60% of hospital infections. (C)</p> Signup and view all the answers

What is the cure rate for multi-drug resistant tuberculosis in some parts of the world?

<p>Below 50%. (C)</p> Signup and view all the answers

What is the implication of the rise in antibiotic resistance on global health security?

<p>Potential reversal of medical advances and increased health costs (B)</p> Signup and view all the answers

What is the current challenge in treating infectious diseases?

<p>Three new antibiotic classes have been discovered in the last 30 years (B)</p> Signup and view all the answers

What is the economic impact of antibiotic resistance on international trade?

<p>It reduces foreign direct investment and tourism (A)</p> Signup and view all the answers

What is the estimated annual cost of successful control of infectious diseases in developing countries?

<p>$33 billion (B)</p> Signup and view all the answers

What is the purpose of stewardship programs in combating antibiotic resistance?

<p>To ensure the right drug is prescribed at the right dose and duration for specific diagnoses (A)</p> Signup and view all the answers

What is the impact of antibiotic resistance on medical achievements?

<p>It puts medical achievements like organ transplantation and cancer therapy at risk (B)</p> Signup and view all the answers

What is the consequence of not addressing antibiotic resistance urgently?

<p>Patients may die from simple and curable infections (D)</p> Signup and view all the answers

What is the primary goal of implementing antibiotic stewardship programmes in various healthcare settings?

<p>To reduce the spread of resistant strains and ensure appropriate treatment (B)</p> Signup and view all the answers

What is the significance of prior approval for certain antibiotics in antibiotic stewardship programmes?

<p>It requires specialist consultation to prevent overuse (D)</p> Signup and view all the answers

What is the threat of antibiotic resistance to global health?

<p>It poses a significant threat to global health (D)</p> Signup and view all the answers

What is the impact of antibiotic resistance on health inequity?

<p>It increases health inequity, particularly for the economically disadvantaged (C)</p> Signup and view all the answers

What is the benefit of switching patients from intravenous to oral drugs once they are clinically improving?

<p>It reduces the spread of resistant strains (C)</p> Signup and view all the answers

What is the challenge in developing new antibiotics?

<p>The cost and testing required are extensive (B)</p> Signup and view all the answers

What is the consequence of antibiotic resistance on the healthcare system?

<p>It leads to longer illness duration and higher morbidity (C)</p> Signup and view all the answers

What is the role of biotechnology in the development of new antibiotics?

<p>It enables the design of new antimicrobial compounds and improves the effectiveness of existing ones (A)</p> Signup and view all the answers

What is the consequence of supply chain breakdowns and global/regional outsourcing of drug manufacturing?

<p>It leads to drug shortages (C)</p> Signup and view all the answers

What is the significance of mass immunization in reducing antibiotic use?

<p>It leads to a decline in antibiotic use (D)</p> Signup and view all the answers

What is the primary goal of the World Health Organisation and the Infectious Diseases Society of America in preventing antibiotic resistance?

<p>To reduce the spread of resistant strains and prevent antibiotic resistance (C)</p> Signup and view all the answers

What is the result of antibiotic use in providing more frequent and longer exposure to selective pressure of antibiotics?

<p>It allows resistant organisms to thrive (D)</p> Signup and view all the answers

What is the primary goal of strengthening infection prevention and control measures?

<p>To prevent and control infections (A)</p> Signup and view all the answers

What are the potential implications of high treatment costs due to resistant infections mentioned in the text?

<p>Compromising the standard of care for patients (B)</p> Signup and view all the answers

Why is it crucial to develop new antimicrobial agents, as stated in the text?

<p>To quantify the burden of diseases associated with resistant infections (D)</p> Signup and view all the answers

How can resistant pathogens be transmitted, according to the text?

<p>Through healthcare workers, equipment, and the environment (D)</p> Signup and view all the answers

What is one of the public health issues directly impacted by antibiotic resistance, according to the text?

<p>Assessment and treatment of various infections (A)</p> Signup and view all the answers

Why is collecting high-quality data associated with quantifying the burden of diseases essential, as mentioned in the text?

<p>To guide policy decisions about resource allocation (C)</p> Signup and view all the answers

What are the potential consequences of antibiotic resistance on the economic burden of treatment, according to the text?

<p>Limited potential cost-effectiveness of antibiotics (D)</p> Signup and view all the answers

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