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Eur J Cardiothorac Surg 1999;16:38-43
© 1999 Elsevier Science NL

Angioscopic video-assisted pulmonary endarterectomy for post-embolic pulmonary hypertension

^a Service of Thoracic and Vascular Surgery and Heart-Lung Transplantation, Marie Lannelongue Hospital, Paris-Sud University, 133 Avenue de la Résistance, 92350 Le Plessis Robinson, France
^b Service of Pneumology and Respiratory Reanimation, Antoine Béclère Hospital, Paris-Sud University, 157 Rue de la Porte de Trivaux, 92141 Clamart Cedex, France

Corresponding author. Tel.: +33-140-942-942; fax: +33-140-945-583
e-mail: phdart{at}pratique.fr

Objectives: To assess whether the use of video-assisted angioscopy would increase the outcome of pulmonary thromboendarterectomy (PTE). Methods: PTE included a median sternotomy, intrapericardial dissection of the superior vena cava, institution of cardiopulmonary bypass, deep hypothermia and sequential circulatory arrest periods. It was always performed through two separate arteriotomies on both main intrapericardial pulmonary arteries, into which a rigid 5 mm angioscope connected to a video camera was introduced to increase the visibility and endarterectomies. Results: From January 1996 to July 1998, 68 consecutive patients (35 males and 33 females) aged 54.3±13.5 years underwent PTE. Patients were in New York Heart Association (NYHA) class II (n=2), III (n=43) or IV (n=23) with the following hemodynamics: mean pulmonary arterial pressure (PAP) 54±13 mmHg; cardiac output (CO): 3.8±0.8 l/min, and total pulmonary resistance (TPR): 1207±416 dyne·s·cm^-5. The cumulated circulatory arrest time was 23±12min and postoperative length of ventilatory support 10±12days. Nine patients died, for an overall in-hospital mortality of 13.2%. The functional outcome in surviving patients was significantly improved (P<0.0001) both clinically (NYHA class 3.2±0.5 vs. 1.3±0.6) and hemodynamically (PAP (mmHg) 53.1±13 vs. 30.2±11.8, CI (l/min per m²) 2.1±0.5 vs. 2.8±0.6, TPR (dyne·s·cm^-5) 1174±416 vs. 519±250). Conclusions: Video-assisted angioscopy improves the quality and degree of pulmonary endarterectomy expanding the indications to include patients with previously inaccessible distal disease.

Key Words: Pulmonary thromboendarterectomy • Pulmonary hypertension • Chronic thromboembolic pulmonary disease • Videoangioscopy

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