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Am J Respir Crit Care Med. 2003 Apr 15;167(8):1139-41. Epub 2003 Jan 24.

Sildenafil for long-term treatment of nonoperable chronic thromboembolic pulmonary hypertension.

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  • 1Department of Internal Medicine, University Hospital, Justus-Liebig-University Giessen, Germany.

Abstract

Only a small percentage of patients with chronic thromboembolic pulmonary hypertension are eligible for pulmonary thrombendarterectomy. We investigated the effects of oral sildenafil on hemodynamics and exercise capacity in 12 nonoperable chronic thromboembolic pulmonary hypertension patients. All patients were in disease progression despite sufficient long-term anticoagulation and the best supportive care and suffered from severe pulmonary hypertension (pulmonary vascular resistance index 1,935 +/- 228 dyn. s. cm-5. m2, cardiac index 2.0 l. min-1. m-2, 6-minute walking distance 312 +/- 30 m). After approximately 6 months of sildenafil treatment, pulmonary hemodynamics and exercise capacity improved significantly (pulmonary vascular resistance index 1,361 +/- 177 L. min-1. m2, p = 0.004, cardiac index 2.4 +/- 0.2 L. min-1. m-2, p = 0.009, 6-minute walking distance 366 +/- 28 m, p = 0.02). Therefore, oral sildenafil may offer a new option for medical treatment of this devastating disease.

PMID:
12684251
[PubMed - indexed for MEDLINE]
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