Which of the following are compensatory mechanisms that come into play in order to maintain the cardiac output for the failing heart?

Question

Quizplus · Accepted Answer

Increased sympathetic stimulation is a compensatory mechanism that is activated in response to a failing heart. This results in the release of adrenaline and noradrenaline, which increase heart rate and contractility, thereby maintaining cardiac output. Choice A is incorrect because decreased myocardial contractility is a result of the failing heart, not a compensatory mechanism. Choice B is incorrect because increased vagal stimulation would result in decreased heart rate and contractility, which would not improve cardiac output. Choice D is incorrect because peripheral vasodilation would lead to a decrease in blood pressure and cardiac output.

Which of the Following Are Compensatory Mechanisms That Come into Play