Massive pulmonary embolism during orthopedic surgery.

A 90-year-old female patient undergoing surgery for knee and hip fractures under general anesthesia sustained cardiac arrest intraoperatively. The transesophageal echocardiography performed during resuscitation revealed massive pulmonary embolism with a 2 x 3 cm oval-shaped thrombus in the bifurcation of pulmonary artery. Anticoagulant therapy was administered immediately.