Excessively high heart rate \( (180) \) can reduce cardiac output because
\( \mathrm{P} \)
(a) b... VIDEO
Excessively high heart rate \( (180) \) can reduce cardiac output because
\( \mathrm{P} \)
(a) blood is moving too fast through the lungs to pick
W up enough oxygen
(b) it tires out the heart muscles and so they pump slower
(c) it reduces the time for ventricular filling which reduces stroke volume
(d) the PR-interval increases which leads to longer ventricular diastole and shorter ventricular systole.
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