A client with left-sided heart failure complains of dyspnea on exertion and a productive cough. The nurse is performing a focused respiratory assessment. Which respiratory finding(s) should the nurse expect to observe in this client? (Select all that apply)

Choice A reason: A pleural friction rub is a grating sound produced by the inflammation of the visceral and parietal pleurae. This finding is typically associated with pleuritis or pneumonia rather than the pulmonary venous congestion and transudative fluid shifts that characterize uncomplicated left-sided congestive heart failure. Choice B reason: Dyspnea on exertion in heart failure patients leads to increased work of breathing. As pulmonary compliance decreases due to interstitial edema, the client must recruit secondary muscles, such as the sternocleidomastoids and scalenes, to facilitate adequate thoracic expansion and maintain sufficient alveolar ventilation and gas exchange. Choice C reason: In left-sided heart failure, high hydrostatic pressure in the pulmonary capillaries forces fluid into the alveoli. This edema fluid mixes with air and surfactant, producing a characteristic white or pinkish frothy sputum. This is a classic hallmark of acute pulmonary congestion and worsening cardiac function. Choice D reason: An S3 gallop, or ventricular gallop, occurs early in diastole during the rapid ventricular filling phase. It is a key clinical indicator of ventricular overfilling or decreased myocardial compliance, which are central pathophysiological features of fluid volume overload in patients with left-sided heart failure. Choice E reason: An increased anteroposterior chest diameter, or barrel chest, is a structural adaptation resulting from chronic air trapping and alveolar hyperinflation. This finding is characteristic of chronic obstructive pulmonary disease, particularly emphysema, rather than the acute or chronic pulmonary edema seen in left-sided heart failure.