The nurse is caring for a client who is experiencing decreased cardiac output due to heart failure. What changes will the nurse observe in this client? Select all that apply.

Choice A rationale Decreased cardiac output (CO), the product of heart rate (HR) and stroke volume (SV), triggers compensatory mechanisms through the sympathetic nervous system to try to maintain adequate tissue perfusion. This compensatory response leads to the release of catecholamines, which stimulate beta-1 receptors in the heart, resulting in an increased heart rate (tachycardia) to initially improve CO. Choice B rationale A significant reduction in cardiac output, which is the volume of blood the heart pumps per minute, leads directly to a decrease in the overall systemic vascular pressure, resulting in hypotension (decreased blood pressure). While compensatory mechanisms attempt to raise the pressure, the underlying heart failure causes a net decrease, especially as the condition worsens. Choice C rationale Heart failure, particularly systolic dysfunction, is characterized by the heart's inability to pump blood effectively, which directly causes a reduced stroke volume. Stroke volume is the amount of blood ejected by the ventricle with each beat, and its reduction is a primary physiological component defining the state of decreased cardiac output in heart failure. Choice D rationale Mean arterial pressure (MAP) is the average pressure in the arteries during one cardiac cycle, and it reflects tissue perfusion pressure. Because cardiac output is decreased and blood pressure often falls, the mean arterial pressure is typically reduced, not increased, in a client with decompensated heart failure due to inadequate forward flow. Choice E rationale Decreased cardiac output results in reduced systemic blood flow, leading to inadequate delivery of oxygen and nutrients to all peripheral and cerebral tissues. As a result, cerebral perfusion is likely to be decreased, potentially leading to symptoms like confusion or dizziness, rather than increased perfusion.\