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Questions and Answers
What is the primary mechanism of action of calcium channel blockers?
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?
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?
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?
Which of the following is a use of calcium channel blockers?
What is the mechanism of action of cardiac glycosides (digitalis drugs)?
What is the mechanism of action of cardiac glycosides (digitalis drugs)?
Which type of medication is used to treat hypertensive emergencies?
Which type of medication is used to treat hypertensive emergencies?
What is a common adverse effect associated with the use of digoxin (a cardiac glycoside)?
What is a common adverse effect associated with the use of digoxin (a cardiac glycoside)?
Which class of drugs is considered a second-line treatment option according to the text?
Which class of drugs is considered a second-line treatment option according to the text?
What is a unique adverse effect associated with quinidine use?
What is a unique adverse effect associated with quinidine use?
What is the primary mechanism of action of organic nitrates?
What is the primary mechanism of action of organic nitrates?
Which population is organic nitrates considered a first-line treatment for?
Which population is organic nitrates considered a first-line treatment for?
What is a common adverse effect associated with the use of organic nitrates?
What is a common adverse effect associated with the use of organic nitrates?
Why is it important to watch for anorexia in patients taking organic nitrates?
Why is it important to watch for anorexia in patients taking organic nitrates?
What is the chemical similarity between organic nitrates and explosives?
What is the chemical similarity between organic nitrates and explosives?