What post-op complication may occur if a patient refuses to ambulate?

• A. Atelectasis
• B. Deep vein thrombosis
• C. Pneumonia
• D. Wound infection

Answer: (A)

Not ambulating after surgery reduces chest expansion and deep breathing, leading to under-ventilation of the lungs. When breaths are shallow, some alveoli collapse and do not participate in gas exchange, a condition called atelectasis. This deformation impairs oxygenation and can set the stage for infection if secretions accumulate, potentially progressing toward pneumonia. While immobility also raises the risk of deep vein thrombosis from venous stasis, the most direct and immediate post-op complication from not ambulating is atelectasis, which is why it’s the best answer. Encouraging movement, deep-breathing exercises, and incentive spirometry help keep the lungs expanded and reduce this risk.