Calcium Channel Blockers and Cardiovascular Medications Quiz
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Questions and Answers

What is the primary mechanism of action of calcium channel blockers?

  • Increases the force of cardiac contraction
  • Dilates blood vessels through the release of nitric oxide
  • Slows conduction and increases the refractory period in the heart
  • Prevents calcium from entering cells, especially at the heart and blood vessels (correct)

Which of the following is a common adverse effect associated with calcium channel blockers?

  • Headaches and drowsiness (correct)
  • Increased cardiac output
  • Constipation and dysrhythmia
  • Prolonged QT interval on the ECG

Which type of calcium channel blocker is known to have a greater effect on the heart?

  • Hydralazine
  • Nifedipine
  • Amlodipine
  • Verapamil (correct)

Which of the following is a use of calcium channel blockers?

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

What is the mechanism of action of cardiac glycosides (digitalis drugs)?

<p>Increases force of contraction and slows conduction (B)</p> Signup and view all the answers

Which type of medication is used to treat hypertensive emergencies?

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

What is a common adverse effect associated with the use of digoxin (a cardiac glycoside)?

<p>Anorexia and nausea/vomiting (C)</p> Signup and view all the answers

Which class of drugs is considered a second-line treatment option according to the text?

<p>Beta adrenergic blockers (C)</p> Signup and view all the answers

What is a unique adverse effect associated with quinidine use?

<p>Lupus-like syndrome (C)</p> Signup and view all the answers

What is the primary mechanism of action of organic nitrates?

<p>Promoting dilation of veins to decrease oxygen demand (D)</p> Signup and view all the answers

Which population is organic nitrates considered a first-line treatment for?

<p>African-American patients (B)</p> Signup and view all the answers

What is a common adverse effect associated with the use of organic nitrates?

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

Why is it important to watch for anorexia in patients taking organic nitrates?

<p>Anorexia is an early sign of toxicity that should be monitored. (C)</p> Signup and view all the answers

What is the chemical similarity between organic nitrates and explosives?

<p>They both contain nitrogen compounds. (D)</p> Signup and view all the answers

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