Which of the following is a common subjective symptom of congestive heart failure?

Tachycardia is a common subjective symptom of congestive heart failure. In this condition, the heart is unable to pump efficiently, which often leads to the body compensating by increasing the heart rate in an attempt to maintain adequate blood flow to vital organs and tissues. Patients may perceive this acceleration in heart rate as palpitations or a racing heart, making it a subjective experience for them.

The other options relate more to objective findings or conditions associated with heart failure rather than subjective symptoms experienced by patients. Hypertension is a measurable elevation in blood pressure, ventricular hypertrophy refers to the thickening of the heart muscle often detectable through imaging techniques, and coronary artery disease is a specific condition that can lead to heart failure but is not a symptom experienced by patients.