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(Circulation. 1996;93:1417-1423.)
© 1996 American Heart Association, Inc.

Articles

Isolated Peripheral Pulmonary Artery Stenoses in the Adult

Jacqueline Kreutzer, MD; Michael J. Landzberg, MD; Tamar J. Preminger, MD; Valerie S. Mandell, MD; S. Ted Treves, MD; Lynne M. Reid, MD; James E. Lock, MD

From the Boston (Mass) Adult Congenital Heart Service, Department of Cardiology, Children's Hospital and Division of Cardiology, Brigham and Women's Hospital, Departments of Cardiology (J.K., M.J.L., T.J.P., J.E.L.), Radiology (V.S.M., S.T.T.), and Pathology (L.M.R.).

Correspondence to Michael J. Landzberg, MD, Boston Adult Congenital Heart Disease Service, Department of Cardiology, Children's Hospital, 300 Longwood Ave, Boston MA 02115.

Background Isolated peripheral pulmonary artery stenosis (PPS) in the adult is rare and frequently unsuspected. We review in this article our experience with 12 adult patients with isolated PPS, half of whom had been previously diagnosed with chronic pulmonary thromboembolic disease.

Methods and Results The presentation, evolution, and management of 12 adults with isolated PPS, 17 to 51 years of age (mean, 36.2±9.7 years), were evaluated. Presenting symptoms were dyspnea and fatigue. Three patients had New York Heart Association (NYHA) functional class III or greater. Lung perfusion scans revealed multiple segmental abnormalities in flow distribution in all patients. Oxygen desaturation at rest was present in 4 patients. At catheterization, right ventricular (RV) pressure was suprasystemic in 2 patients, systemic in 1, and more than half-systemic in 7. All had multiple bilateral nonuniform stenoses in segmental and subsegmental arteries. Balloon pulmonary angioplasty (BPA) to decrease RV hypertension and improve pulmonary flow distribution was performed in 11 patients. After BPA, vessel diameter increased >50% in 10 patients, distal pulmonary artery pressure increased 30% in 6, and RV pressure decreased >30% in 5. One patient died shortly after BPA as a result of pulmonary hemorrhage. Immediate procedural success was achieved in 9 of 11 patients. At a mean follow-up period of 52±32 months, 7 patients had sustained symptomatic improvement (NYHA class I-II).

Conclusions We describe a severe syndrome of isolated PPS in the adult that mimics chronic pulmonary thromboembolic disease. Pulmonary hemodynamics and angiography are required for definitive diagnosis. BPA may offer these patients successful short-term reduction in RV hypertension and alleviation of symptomatology.

Key Words: balloon • arteries • pathology

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