Principles of Antimicrobial Therapy Quiz

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Questions and Answers

Which drug class used for arrhythmia has a narrow therapeutic window and may induce proarrhythmia?

  • Calcium channel blockers
  • Potassium channel blockers
  • Sodium channel blockers (correct)
  • Beta-blockers

What are the two major mechanisms of cardiac arrhythmias mentioned in the text?

  • Abnormal automaticity and abnormal conduction (correct)
  • Sympathetic and parasympathetic stimulation
  • Atrial and ventricular fibrillation
  • Vasodilation and vasoconstriction

Which condition might induce arrhythmia according to the text?

  • Hypothyroidism
  • Digoxin underdose
  • Hypokalemia
  • Electrolyte disturbances (correct)

What is the preferred therapy for arrhythmia when possible, as mentioned in the text?

<p>Nonpharmacological therapy (cardioversion, ablation, and pacemakers) (A)</p> Signup and view all the answers

What is the normal heart rate in a person with sinus rhythm according to the text?

<p>60-100 bpm (B)</p> Signup and view all the answers

Which type of antibiotic drug inhibits bacterial replication?

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

What is the primary requirement for selecting the most appropriate antimicrobial agent?

<p>Identity of the organism and susceptibility to the agent (C)</p> Signup and view all the answers

What is the primary concern associated with the most commonly used antibiotics?

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

What is the key factor required for selecting the most appropriate antimicrobial agent?

<p>Safety and efficacy of the agent (B)</p> Signup and view all the answers

Which drugs are examples of protein synthesis inhibitors?

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

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Study Notes

Cardiac Arrhythmias

  • Antiarrhythmic drugs with a narrow therapeutic window may induce proarrhythmia.
  • The two major mechanisms of cardiac arrhythmias are abnormal impulse generation and abnormal impulse conduction.
  • Arrhythmia can be induced by electrolyte imbalance, particularly hypokalemia.

Treatment of Arrhythmias

  • The preferred therapy for arrhythmia is cardioversion, when possible.
  • Normal heart rate in a person with sinus rhythm is between 60-100 beats per minute.

Antibiotics

  • Protein synthesis inhibitors are a type of antibiotic that inhibits bacterial replication.
  • The primary requirement for selecting the most appropriate antimicrobial agent is the susceptibility of the causative organism.
  • The primary concern associated with the most commonly used antibiotics is the development of resistance.
  • The key factor required for selecting the most appropriate antimicrobial agent is the identification of the causative organism.
  • Examples of protein synthesis inhibitors include tetracycline, macrolides, and aminoglycosides.

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