Answer :

Severe peripheral edema in a person with right-sided heart failure is primarily caused by the right ventricle's inability to pump blood into the pulmonary circulation, increasing pressure in the systemic veins and causing fluid leakage into tissues.

The most likely cause of severe peripheral edema in a person with right-sided heart failure is the inability of the right ventricle to effectively pump blood into the pulmonary circulation. In right-sided heart failure, the heart struggles to move deoxygenated blood from the systemic circulation into the lungs for oxygenation. This results in an increased pressure in the systemic veins, leading to fluid leakage from the circulation and accumulation in the extremities and other peripheral tissues, which manifests as peripheral edema.

In the context of heart failure, the term congestive heart failure is often used, as the failure of the heart to adequately pump blood leads to congestion and fluid accumulation in various tissues. Peripheral edema is typically seen in the lower extremities and can be severe. The edema is due to the increased hydrostatic pressure in the systemic venous system, causing fluid to be forced out of the veins and into the surrounding tissues.

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