A nurse is caring for a client who has valvular heart disease and is at risk for developing left-sided heart failure. Which of the following manifestations should alert the nurse the client is developing this condition?

A. Distended abdomen is more commonly associated with right-sided heart failure due to liver congestion and ascites. B. Anorexia can be a nonspecific symptom and is not a primary indicator of left-sided heart failure. C. Weight gain and edema in both legs are typical signs of right-sided heart failure, caused by systemic venous congestion. D. Breathlessness (dyspnea) accompanied by crackles and wheezes indicates pulmonary congestion and fluid buildup, which are classic signs of left-sided heart failure where the heart fails to effectively pump blood out to the body, causing fluid to back up into the lungs.