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Anon12398 Anon12398
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Posts: 16
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7 years ago
Heart block is a problem, a type of arrhythmia, with the heart’s electrical system. Disease, surgery or medicines may cause damage that results in heart block. In a second degree heart block the signal from the SA node to the AV node may be slowed. Some signals from the SA node may not reach the AV node. If the signal from the SA node to the AV node is blocked or delayed, what variable directly changes?

A. stroke volume decreases
B. heart rate decreases
C. cardiac output decreases
D. vasodilation decreases
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7 years ago
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