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J Am Coll Cardiol, 1998; 32:297-304 © 1998 by the American College of Cardiology Foundation |
a Cardiopulmonary and the Interventional Catheterization Laboratory Departments, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
Manuscript received January 13, 1998; revised manuscript received April 16, 1998, accepted April 27, 1998.
Address for correspondence: Dr. Julio Sandoval, Cardiopulmonary Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Tlalpan 14080, Mexico D.F., Mexico
sandoval{at}compuserve.com.mx
Objectives. We sought to investigate the acute hemodynamic effects of graded balloon dilation atrial septostomy (BDAS) and to define the long-term impact of this procedure on New York Heart Association functional class and survival in adult patients with primary pulmonary hypertension (PPH).
Background. Current treatment strategies for patients with severe and refractory PPH are limited by either technical difficulties and high mortality or cost.
Methods. We studied 15 patients with severe PPH. BDAS was successfully performed in all patients by crossing the interatrial septum with a Brockenbrough needle, followed by progressive dilation of the orifice with a Mansfield balloon in a hemodynamically controlled, step-by-step manner.
Results. BDAS caused an immediate significant fall in right ventricular end-diastolic pressure and in systemic arterial oxygen saturation and an increase in cardiac index. One patient died, and 14 survived the procedure and significantly improved their mean functional class (from 3.57 ± 0.6 to 2.07 ± 0.3 [mean ± SD], p < 0.001). Exercise endurance (6-min test) also improved from 107 ± 127 to 217 ± 108 m (p < 0.001). Because of spontaneous closure, BDAS was repeated in four patients. The survival rate among patients who survived the procedure was 92% at 1, 2 and 3 years, which is better than that for historical control PPH patients (73%, 59% and 52%, respectively).
Conclusions. With careful monitoring, BDAS is a safe and useful palliative treatment for selected patients with severe PPH.
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