Mid-term results of surgery for chronic thromboembolic pulmonary hypertension

a Division of Cardiovascular Surgery, Department of General Surgery, Graduate School of Medicine, Chiba University, Inohana 1-8-1 Chuo-ku, Chiba 260-0856, Japan b Department of Cardiovascular Surgery, National Hospital Organization, Chiba Medical Center, Tsubakimori 4-1-2 Chuo-ku, Chiba 260-8606, Japan *Corresponding author. Tel.: +81-43-226-2103; fax: +81-43-226-2552. E-mail address : keiichi-ishida{at}pro.odn.ne.jp (K. Ishida). Pulmonary thromboendarterectomy is an effective surgical treatment for chronic thromboembolic pulmonary hypertension (CTEPH). In this study, we review our short- and mid-term results in the recent series of patients undergoing pulmonary thromboendarterectomy. Twenty-three patients (54±12 years) were re-evaluated 7–59 months (mean, 34 months) after surgery. Nine patients were in New York Heart Association functional class II, 11 patients in class III and three patients in class IV. All patients used supplemental oxygen therapy. After surgery, pulmonary hemodynamics were significantly improved: pulmonary vascular resistance (PVR) decreased from 925±342 to 337±260 dynes·s·cm –5 ( P