Which of the following is a postoperative risk factor specifically associated with older adults?

A. Obese patients often have decreased lung function due to reduced chest wall compliance and increased abdominal pressure, which can impair respiratory mechanics. This leads to a higher risk of respiratory complications such as hypoventilation, atelectasis, and pneumonia post-surgery.

B. Obesity places additional strain on the cardiovascular system, increasing the risk of cardiovascular events like hypertension, heart attack, and stroke. This strain is compounded during surgery due to increased cardiac workload and potential fluid shifts.
C. Obesity impairs wound healing due to several factors, including decreased oxygenation to tissues, impaired immune function, and increased adipose tissue which can create a moist environment conducive to infection. This increases the risk of postoperative infections.
D. In fact, obesity is associated with an increased risk of blood clots (venous thromboembolism) due to reduced mobility, chronic inflammation, and altered coagulation factors. Obesity does not improve circulation; rather, it often exacerbates venous stasis and clot formation.

A. This actually helps prevent thromboembolism by promoting blood flow.

B. Increased body weight can contribute to blood clotting, increasing the risk of thromboembolism.
C. While not impossible, younger individuals are generally at lower risk for thromboembolism compared to older adults.
D. Proper hydration helps maintain blood flow and can reduce the risk of blood clots.