Rights of Therapeutics and Evidence-Based Medicine
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Questions and Answers

What is one of the steps involved in Evidence Based Medicine (EBM)?

  • Conducting laboratory experiments
  • Administering treatments to patients
  • Creating new drugs
  • Asking a focused question (correct)
  • Which type of evidence in EBM involves the use of secondary evidence to make clinical recommendations?

  • Primary evidence
  • Empirical evidence
  • Tertiary evidence (correct)
  • Anecdotal evidence
  • In EBM, what is considered as secondary evidence?

  • Laboratory experiments
  • Clinical trial results
  • Interpretation of original research (correct)
  • Original research studies
  • Which aspect is NOT part of the 'Rights of Therapeutics'?

    <p>Right diagnosis</p> Signup and view all the answers

    What is the purpose of evaluating outcomes in EBM?

    <p>To apply research findings to clinical practice</p> Signup and view all the answers

    What is the formula to calculate the incidence in the exposed group?

    <p>a/(a+b)</p> Signup and view all the answers

    In pharmacokinetics, which part of the body is primarily responsible for drug metabolism?

    <p>Liver</p> Signup and view all the answers

    What is the primary factor influencing drug distribution in the body?

    <p>Tissue permeability</p> Signup and view all the answers

    Which pharmacokinetic process involves the movement of drugs from the bloodstream to various tissues and organs?

    <p>Distribution</p> Signup and view all the answers

    What is the main focus of pharmacokinetics?

    <p>Concentration-effect relationship</p> Signup and view all the answers

    Which factor is essential in understanding drug dynamics according to the text?

    <p>Equilibrium between free and bound drug fractions</p> Signup and view all the answers

    What does Odds Ratio (OR) measure in epidemiology?

    <p>Risk of outcome among exposed vs. unexposed groups</p> Signup and view all the answers

    In calculating Relative Risk (RR), what does 'Incidence in the exposed divided by the incidence in the unexposed' represent?

    <p>'a' value divided by 'a + b' value</p> Signup and view all the answers

    'Drug dose -> concentration in plasma -> concentration at the effect/target site' best describes which pharmacokinetic process?

    <p>'Distribution'</p> Signup and view all the answers

    What occurs when a drug is orally administered in terms of absorption according to the text?

    <p>Traverse of gastrointestinal membrane for absorption into the bloodstream.</p> Signup and view all the answers

    Which administration route can bypass first-pass metabolism?

    <p>Intravenous</p> Signup and view all the answers

    Which route of drug delivery is known for its sustained release effect?

    <p>Transdermal</p> Signup and view all the answers

    What determines the choice of drug administration route according to the text?

    <p>Onset of effect required</p> Signup and view all the answers

    Which enzyme is involved in oxidizing drugs to make them more water-soluble for elimination?

    <p>Cytochrome P450</p> Signup and view all the answers

    What is the unique characteristic of Enalapril mentioned in the text?

    <p>Metabolite with pharmacological action</p> Signup and view all the answers

    Which parameter describes the efficiency of drug elimination from the body?

    <p>Clearance</p> Signup and view all the answers

    Which administration route allows for drugs to be directly injected into a vein?

    <p>Intravenous</p> Signup and view all the answers

    What is the purpose of adding moieties or chemical groups to a drug molecule during conjugation?

    <p>Facilitate biliary elimination</p> Signup and view all the answers

    Which administration route is known for providing a local effect such as pain relief?

    <p>Rectal</p> Signup and view all the answers

    Which parameter determines the loading dose of a drug?

    <p>Volume of distribution</p> Signup and view all the answers

    What is the key advantage of blinding in Randomized Controlled Trials (RCTs)?

    <p>Minimizes volunteer bias</p> Signup and view all the answers

    What is one of the disadvantages of Randomized Controlled Trials (RCTs) mentioned in the text?

    <p>Ethical challenges in certain scenarios</p> Signup and view all the answers

    Which discipline studies the distribution and determinants of diseases in populations?

    <p>Epidemiology</p> Signup and view all the answers

    What type of study is used to investigate the relationship between two factors?

    <p>Analytic study</p> Signup and view all the answers

    In a cohort research design, what is the outcome variable also known as?

    <p>Dependent variable</p> Signup and view all the answers

    Which study design starts with the outcome and works backwards?

    <p>Case-control design</p> Signup and view all the answers

    What is one issue associated with cross-sectional analytical studies mentioned in the text?

    <p>Inability to determine true association with exposure and outcome</p> Signup and view all the answers

    How do researchers assess the strength of association between exposure and outcome?

    <p>By calculating the Relative Risk (RR) and Odds Ratio (OR)</p> Signup and view all the answers

    What do Observational Studies primarily focus on?

    <p>Observing exposure and outcomes without interfering</p> Signup and view all the answers

    What distinguishes Pharmacoepidemiology from Clinical Pharmacology?

    <p>Combination of epidemiology and clinical pharmacology</p> Signup and view all the answers

    What is pharmacokinetics the study of?

    <p>The relationship between drug concentration, pharmacological effect and time.</p> Signup and view all the answers

    Which concentration-time curve is most consistent with administration as a transdermal patch?

    <p>Subcutaneous injection</p> Signup and view all the answers

    Why does the dose of Enalapril need to be reduced in people with renal impairment?

    <p>Enalapril's active metabolite is predominantly renally excreted.</p> Signup and view all the answers

    What does pharmacodynamics refer to?

    <p>What the drug does to the body.</p> Signup and view all the answers

    Cmax in pharmacokinetics refers to:

    <p>Peak concentration.</p> Signup and view all the answers

    What is the significance of EC50 in pharmacodynamics?

    <p>It reflects the concentration at which 50% of the maximum effect is observed.</p> Signup and view all the answers

    How do agonists work in pharmacodynamics?

    <p>They enhance cellular activity by mimicking a natural chemical.</p> Signup and view all the answers

    'Second messengers' in pharmacodynamics are responsible for:

    <p>Carrying signals from cell surface receptors to other parts of the cell.</p> Signup and view all the answers

    What do concentration-effect relationships Emax and EC50 represent in pharmacodynamics?

    <p>Emax is the maximal response, while EC50 is the concentration at 50% of Emax.</p> Signup and view all the answers

    What factor influences the distribution of unbound Midazolam to various tissues throughout the body?

    <p>Molecular weight</p> Signup and view all the answers

    Which enzyme extensively metabolizes Midazolam?

    <p>CYP3A4</p> Signup and view all the answers

    What is the relationship between the EC50 parameter and the dosage of Midazolam in older people?

    <p>They need a lower dose due to decreased sensitivity</p> Signup and view all the answers

    In terms of pharmacokinetics, why does Midazolam have a rapid onset of action?

    <p>It can cross the blood-brain barrier quickly</p> Signup and view all the answers

    What characteristic of Midazolam allows it to dissolve in lipids and move easily through cell membranes?

    <p>Lipophilicity</p> Signup and view all the answers

    Why would redosing of Theophylline be necessary after 6-8 hours based on the PK/PD graph?

    <p>Loss of effectiveness over time</p> Signup and view all the answers

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