Chest, Vol 97, 1190-1197, Copyright © 1990 by American College of Chest Physicians

ARTICLES

Pulmonary edema in severe falciparum malaria. Hemodynamic study and clinicophysiologic correlation

P Charoenpan, S Indraprasit, S Kiatboonsri, O Suvachittanont and S Tanomsup
Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.

This study was performed to extend the knowledge of the pathogenesis of PE in severe falciparum malaria. Sequential hemodynamic studies were conducted in 13 patients with severe falciparum malaria. Seven patients developed PE, while the other six patients had NPE. Two patients died, one in each group. Hemodynamic changes were found in both groups, including an initial reduction in SVR and PVR, along with an increased CI and variable values (normal and increased) of PCWP. All abnormalities persisted for at least two days; changes in PVR lasted especially longer (throughout five days). The initial hemodynamic changes cannot predict the development of PE; however, heavy parasitemia of more than 60 percent and severe hypoalbuminemia were found to be more common in PE than NPE. Of three patients with PE who had normal PCWP, one died, with postmortem findings of increased pulmonary capillary permeability. The increased PCWP which was found in the other four cases of PE was proven to be volume overload without evidence of CHF. It was concluded that the pathophysiologic changes in severe falciparum malaria were systemic and pulmonary vasodilation. The abnormal pulmonary vascular change was found to be the cause of PE. Volume overload and hypoalbuminemia could aggravate further pulmonary capillary leakage in these cases.

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