Antiarrhythmic Agents Quiz
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Questions and Answers

Which phase of the cardiac action potential is characterized by the influx of sodium ions?

  • Phase 3
  • Phase 2
  • Phase 1
  • Phase 0 (correct)

    • Who contributed to the development of the Vaughan Williams classification system?

  • Miles Vaughan Williams
  • Hertford College, Oxford
  • Bramah N. Singh (correct)
  • The cardiac myocyte

    • What is the main purpose of antiarrhythmic agents?

  • To increase sodium-channel inactivation
  • To suppress abnormally fast rhythms (correct)
  • To prolong the plateau phase of action potential
  • To enhance the influx of sodium ions

    • What makes the classification of antiarrhythmic agents imprecise?

    <p>Multiple modes of action</p> Signup and view all the answers

    What characterizes phase 2 of the cardiac action potential?

    <p>Opening of voltage-sensitive calcium channels</p> Signup and view all the answers

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