A 47-year-old member asked:
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How do beta-blockers increase cardiac output?

1 doctor answer
Dr. Francis Uricchio
37 years experience in Cardiology
They don't: Cardiac output is the product of heart rate and stroke volume. Beta blockers decrease heart rate and the strength of contraction (contractility). Thus, beta blockers would not be expected to increase cardiac output.
Answered on Oct 7, 2016
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A 46-year-old member asked:
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They don't: Beta blockers do not increase cardiac output. If anything, they reduce cardiac output by reducing heart rate and the strength of contraction (contrac ... Read More
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Little effect: No effect unless you are dehydrated, in which case cardiac output may decrease.
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