Pulmonary thromboendarterectomy for chronic thromboembolic pulmonary hypertension

Abstract

Introduction. Pulmonary thromboendarterectomy (PTE) is a surgical procedure which is considered the only effective and potentially curative treatment for chronic thromboembolic pulmonary hypertension (CTEPH). CTEPH is a rare outcome from pulmonary emboli and, when left untreated, will result in right ventricular failure and death.

Methods. From June 1999 to November 2003, 40 of these procedures were performed in our institution. Emphasis is placed on multidisciplinarity and cooperation between different medical and surgical disciplines. Perfusion management consists of myocar-dial and cerebral protection, deep hypothermia with multiple periods of circulatory arrest, reperfusion at hypothermia, hemofiltration and cellsaving techniques.

Results. Hemodynamic improvement occurs immediately post operation. Mean pulmonary artery pressure decreased from 50±11 to 38±10 mmHg, pulmonary vascular resistance from 1246±482 to 515±294 dynes s/cm⁵ and cardiac index increased from 1.54±0.54 to 2.63±0.75 L/min per m². Pump runs had an average duration of 187±29 min, circulatory arrest time was 29±11 min and crossclamp time 36±14 min. Extracorporeal membrane oxygenation can be an ultimate treatment for specific postoperative problems like persistent pulmonary hypertension and/or reperfusion pulmonary edema.

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