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(Chest. 1988;93:60-64.)
© 1988 American College of Chest Physicians

Correlation of Bronchoalveolar Lavage Cell Populations with Clinical Severity of Pneumocystis carinii Pneumonia

Robert L. Smith M.D.1; Wafaa M. El-Sadr M.D.1; and Milena L. Lewis M.D.1

1 From the Pulmonary Section, New York Veterans Administration Medical Center, New York

We correlated bronchoalveolar lavage (BAL) cell populations with clinical course and outcome in 19 patients with Pneumocystis carinii pneumonia and acquired immunodeficiency syndrome. Twelve patients demonstrated an elevated (greater than or equal to 5 percent) BAL combined neutrophil and eosinophil count, which correlated with the magnitude of the alveolar-arterial PO2 gradient. Patients with elevated BAL granulocytes also had significantly higher serum lactate dehydrogenase levels. Three of the four patients who died had the highest percentage of neutrophil counts observed in lavage fluid. Although no patient was thought to have a concurrent bacterial infection, potential pathogens were cultured from the sputum of patients with the most elevated neutrophil counts. Whether BAL granulocytes reflect an inflammatory process analogous to the adult respiratory distress syndrome or signify concomitant bacterial infection remains to be determined. We conclude that BAL granulocytes are associated with more severe respiratory compromise in patients with Pneumocystis carinii pneumonia.

Submitted on March 24, 1986
Accepted on May 11, 1987




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