Which of the following is NOT a symptom of right heart failure?

Weight loss is typically not associated with right heart failure. In the context of right heart failure, the heart's inability to pump blood effectively can lead to a buildup of fluid in the body, resulting in various symptoms related to fluid retention.

Jugular venous distention (JVD) is a direct result of increased pressure in the venous system due to the heart's reduced ability to handle blood returning from the body. Pitting edema, which is the accumulation of fluid in the interstitial spaces leading to swelling, is commonly noted in patients with heart failure as fluid backs up in tissues. Ascites, or fluid accumulation in the abdominal cavity, can occur due to elevated pressures in the venous system as well. These symptoms are indicators of fluid overload, which is a hallmark of right heart failure.

In contrast, weight loss would more typically arise in conditions that involve metabolic stress or chronic disease states rather than fluid retention, making it an atypical symptom in the context of right heart failure.