A nurse caring for clients with heart failure must be aware of the compensatory mechanisms activated in heart failure.Which physiology is not associated with the neuroendocrine compensatory mechanism?
A) Increased cardiac workload causes myocardial muscle to hypertrophy and ventricles to dilate.
B) Decreased CO stimulates the sympathetic nervous system and catecholamine release.
C) Decreased CO and decreased renal perfusion stimulate the renin-angiotensin system.
D) Antidiuretic hormone is released from posterior pituitary.

Question

Quizplus · Accepted Answer

A) When the heart begins to fail, mechanisms are activated to compensate for the impaired function and maintain the cardiac output. The primary compensatory mechanisms are as follows:
1. The Frank-Starling mechanism
2. Neuroendocrine responses, including activation of the SNS and the renin-angiotensin system
3. Myocardial hypertrophy
The Frank-Starling mechanism is when increased cardiac workload causes myocardial muscle to hypertrophy and ventricles to dilate. All other choices are characteristics of the neuroendocrine response.
B) When the heart begins to fail, mechanisms are activated to compensate for the impaired function and maintain the cardiac output. The primary compensatory mechanisms are as follows:
1. The Frank-Starling mechanism
2. Neuroendocrine responses, including activation of the SNS and the renin-angiotensin system
3. Myocardial hypertrophy
The Frank-Starling mechanism is when increased cardiac workload causes myocardial muscle to hypertrophy and ventricles to dilate. All other choices are characteristics of the neuroendocrine response.
C) When the heart begins to fail, mechanisms are activated to compensate for the impaired function and maintain the cardiac output. The primary compensatory mechanisms are as follows:
1. The Frank-Starling mechanism
2. Neuroendocrine responses, including activation of the SNS and the renin-angiotensin system
3. Myocardial hypertrophy
The Frank-Starling mechanism is when increased cardiac workload causes myocardial muscle to hypertrophy and ventricles to dilate. All other choices are characteristics of the neuroendocrine response.
D) When the heart begins to fail, mechanisms are activated to compensate for the impaired function and maintain the cardiac output. The primary compensatory mechanisms are as follows:
1. The Frank-Starling mechanism
2. Neuroendocrine responses, including activation of the SNS and the renin-angiotensin system
3. Myocardial hypertrophy
The Frank-Starling mechanism is when increased cardiac workload causes myocardial muscle to hypertrophy and ventricles to dilate. All other choices are characteristics of the neuroendocrine response.

A Nurse Caring for Clients with Heart Failure Must Be