Surgery An abnormal ventilation-perfusion ratio (Qs/Qr) in the postoperative patient has been associated with A Pulmonary thromboembolism B Lower abdominal surgery C Starvation D The upright position 💡 Explanation An abnormal ventilation-perfusion ratio (Qs/Qr) in the postoperative patient has been associated with ✓ Correct Answer: A. Pulmonary thromboembolism