All of these symptoms are caused by increased hydrostatic pressure from right-sided heart failure.
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Peripheral edema - Increased hydrostatic pressure leads to fluid leakage into the interstitial spaces, causing swelling in the legs and feet.
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Jugular venous distension - Increased pressure in the right atrium can lead to distension of the jugular veins due to the backflow of blood.
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Ascites - Increased hydrostatic pressure in the abdominal vessels can cause fluid accumulation in the abdominal cavity.
Thus, the correct answer is All of these symptoms are caused by increased hydrostatic pressure from right sided heart failure.