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Calcium Channel Blockers and Cardiovascular Medications Quiz

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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?

All of the above Signup and view all the answers

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

Increases force of contraction and slows conduction Signup and view all the answers

Which type of medication is used to treat hypertensive emergencies?

Nitroprusside Signup and view all the answers

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

Anorexia and nausea/vomiting Signup and view all the answers

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

Beta adrenergic blockers Signup and view all the answers

What is a unique adverse effect associated with quinidine use?

Lupus-like syndrome Signup and view all the answers

What is the primary mechanism of action of organic nitrates?

Promoting dilation of veins to decrease oxygen demand Signup and view all the answers

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

African-American patients Signup and view all the answers

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

Headache Signup and view all the answers

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

Anorexia is an early sign of toxicity that should be monitored. Signup and view all the answers

What is the chemical similarity between organic nitrates and explosives?

They both contain nitrogen compounds. Signup and view all the answers