Which of the following reduce the hearts demand for oxygen by lowering heart rate?

1. Anticoagulants and beta-adrenergic blockers
2. Calcium channel blockers and anticoagulants
3. Organic nitrates and calcium channel blockers
4. Beta-adrenergic blockers and calcium channel blockers


Correct Answer: 4
Rationale: Beta blockers and some calcium channel blockers reduce cardiac demand by lowering heart rate. Organic nitrates dilate vessels, and anticoagulants prevent blood clots from forming.

Nursing

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A) True B) False

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The community health nurse is using a survey that yields similar or nearly similar results each time the survey is administered. Achieving similar results for the same variable is an example of

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