Vascular Trauma

Incidence and Outcome of Pulmonary Embolism Following Popliteal Venous Repair in Trauma Cases

Tofigh AM, Karvandi M (Shahid Beheshti Univ of Med Sciences, Tehran, Iran) Eur J Vasc Endovasc Surg 41:406–411, 2011^§

Abstract

Objectives and Design

Popliteal vein repair and ligation are the two main approaches to the treatment of the venous component of major, complex, knee injuries with vascular involvement. We have studied the incidence of pulmonary embolism following popliteal vein repair in trauma cases using computed tomography (CT) angiography and report the outcome.

Material and Methods

From June 2006 to December 2009, 45 patients with popliteal vein injury were operated on in our vascular unit using lateral venorrhaphy, end-to-end anastomosis, a saphenous vein interposition graft and venous patch repair. All the patients were operated on using a medial approach to the knee. On the third postoperative day, all patients underwent a colour Doppler scan of the repaired popliteal vein to study patency, and pulmonary artery CT angiography using a 64-slice multidetector CT scan unit to establish the incidence of pulmonary embolism.

Results

The number of patients treated by each method were: lateral venorrhaphy 20 (44%), end-to-end anastomosis 13 (29%), saphenous vein interposition graft 9 (20%) and venous patch repair three (7%). Two patients (4%) died because of sudden cardio-respiratory arrest the day after surgery with massive bilateral pulmonary artery embolism at autopsy. Popliteal colour duplex ultrasound imaging showed seven (16%) cases of complete vein thrombosis and seven (16%) cases of partial vein thrombosis. CT angiography showed pulmonary embolism in 11 (26%) patients. From seven patients with complete thrombosis three patients, and from seven patients with incomplete thrombosis five patients showed pulmonary embolism on CT angiography. Other than two cases of early mortality, five (12%) patients developed clinical manifestations of pulmonary embolism and 11 (26%) patients had pulmonary embolism detected by CT angiography. Seven (16%) of our patients had mild-to-severe pulmonary embolism and 13 patients (29%) had proven pulmonary embolism. The total mortality rate was 7%.

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