In pulmonary edema due to acute decompensated heart failure, which lung finding is commonly observed?

• A. Clear breath sounds
• B. Crackles throughout the lungs
• C. Wheezes
• D. Absence of cough

Answer: (B)

Pulmonary edema from acute decompensated heart failure happens when high pressures in the left side of the heart push fluid into the lung interstitium and alveoli. That fluid disrupts normal air movement, so air passing through the fluid-filled spaces produces crackling sounds on auscultation. Crackles throughout the lungs reflect widespread alveolar edema and are a classic finding as edema worsens. Clear breath sounds would argue against edema, wheezes can occur but are not the typical feature of edema, and absence of cough isn’t reliable since coughing can occur with fluid irritation. So crackles across the lungs best fit the edema process.