Left-sided congestive heart failure is primarily due to pulmonary edema from excessive pulmonary capillary pressure. Which option reflects this mechanism?

Left-sided congestive heart failure is primarily due to pulmonary edema from excessive pulmonary capillary pressure. Which option reflects this mechanism?

• A. Peripheral edema due to high venous pressure
• B. Pulmonary edema from excessive pulmonary capillary pressure
• C. JVD
• D. Ascites

Answer: (B)

Left-sided heart failure causes fluid backing up into the lungs because the left ventricle can’t move blood forward effectively. This raises left atrial and pulmonary capillary pressures. The higher hydrostatic pressure pushes fluid from the capillaries into the lung interstitium and alveoli, leading to pulmonary edema. This edema is the hallmark of the left-sided failure mechanism and explains the respiratory symptoms you’d expect. Peripheral edema, jugular venous distension, and ascites are more typical of right-sided heart failure or systemic venous congestion, not the pulmonary edema driven by high pulmonary capillary pressure.

Left-sided heart failure causes fluid backing up into the lungs because the left ventricle can’t move blood forward effectively. This raises left atrial and pulmonary capillary pressures. The higher hydrostatic pressure pushes fluid from the capillaries into the lung interstitium and alveoli, leading to pulmonary edema. This edema is the hallmark of the left-sided failure mechanism and explains the respiratory symptoms you’d expect.

Peripheral edema, jugular venous distension, and ascites are more typical of right-sided heart failure or systemic venous congestion, not the pulmonary edema driven by high pulmonary capillary pressure.