A 38-year-old member asked:
How can decreased cardiac output be caused by abnormal fluid volume?
1 doctor answer
Dr. Bennett Werner answered
43 years experience in Cardiology
Physiology: The amount of blood the left ventricle can pump (stroke volume) is directly related to "preload" which is based on the venous return to the heart. If volume is contracted from bleeding, diuresis, vasodilation, or poor intake, preload is reduced, venous return is reduced, stroke volume is reduced &, if increased heart rate can't compensate for the reduction, then cardiac output is also reduced.
Answered on Apr 21, 2012
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