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Questions and Answers
Which of the following statements about calcium channel blockers is true?
Which of the following statements about calcium channel blockers is true?
- Calcium channel blockers decrease myocardial oxygen consumption. (correct)
- Calcium channel blockers increase calcium influx in ischemia.
- Calcium channel blockers primarily affect venous smooth muscle.
- Calcium channel blockers promote the activity of ATP-consuming enzymes.
What is the primary effect of calcium channel blockers on smooth muscle tone?
What is the primary effect of calcium channel blockers on smooth muscle tone?
- Increase in smooth muscle tone
- Decrease in smooth muscle tone (correct)
- Varies depending on the type of calcium channel blocker
- No effect on smooth muscle tone
How do calcium channel blockers protect the tissue in ischemia?
How do calcium channel blockers protect the tissue in ischemia?
- By promoting the activity of ATP-consuming enzymes
- By increasing calcium influx
- By depleting energy stores
- By inhibiting the entrance of calcium into cardiac and smooth muscle cells (correct)
What is the main mechanism of action of calcium channel blockers in the treatment of effort-induced angina?
What is the main mechanism of action of calcium channel blockers in the treatment of effort-induced angina?
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Why are calcium channel blockers effective in the treatment of vasospastic angina?
Why are calcium channel blockers effective in the treatment of vasospastic angina?
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