Which of the Following Mechanisms Is NOT Helpful to the Heart

question 17

Multiple Choice

Which of the following mechanisms is NOT helpful to the heart in compensating for a failing left ventricle and a falling cardiac output?

• A)Increased contractility due to increased stretch
• B)Increased heart rate due to release of epinephrine by the nervous system
• C)Increased system vascular resistance due to release of catecholemines
• D)Increased myocardial muscle thickness due to chronic high work load

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