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Determining the cardiovascular conditions

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Reference no: EM132497239

Calcium channel blockers are sometimes prescribed to treat certain cardiovascular conditions. What is the most likely effect of a calcium channel blocker?

Correct Answer: Decrease stroke volume

Answers choices:

a) Prolong the plateau phase of contractile myocardium action potentials

b) Increase heart rate

c) Delay repolarization of SA node cells

d) Decrease stroke volume

Question: Why is this true? Why isn't the answer "delay depolarization of SA node cells"?

Reference no: EM132497239

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