Which finding on auscultation would most strongly suggest pulmonary edema in a patient with cardiogenic shock?

• A. Crackles in both lungs
• B. Clear breath sounds
• C. Dullness to percussion
• D. Absence of sounds

Answer: (A)

Pulmonary edema from cardiogenic shock happens when the heart can’t pump effectively, causing elevated pressures that push fluid into the lung interstitium and alveoli. This fluid disrupts normal air movement and produces crackles on auscultation, often heard in multiple areas of both lungs as the edema becomes bilateral. That bilateral crackling is the most direct sign of fluid-filled airspaces, which is exactly what pulmonary edema looks like in this context. Clear breath sounds would argue against edema, dullness to percussion points to pleural effusion or consolidation rather than diffuse interstitial/alveolar edema, and absence of sounds isn’t typical for edematous lungs. So crackles in both lungs best indicate pulmonary edema in a patient with cardiogenic shock.