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Aerosolized Pentamidine: Effect on Diagnosis and Presentation of Pneumocystis carinii Pneumonia

Kethy M. Jules-Elysee, MD; Diane E. Stover, MD; Muhammad B. Zaman, MD; Edward M. Bernard, BA; and Dorothy A. White, MD
[+] Article, Author, and Disclosure Information

Requests for Reprints: Dorothy A. White, MD, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021.

Current Author Addresses: Drs. Jules-Elysee, Stover, Zaman, and White and Mr. Bernard: Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021.

© 1990 American College of PhysiciansAmerican College of Physicians

Ann Intern Med. 1990;112(10):750-757. doi:10.7326/0003-4819-112-10-750
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Study Objective: To determine the effect of previous aerosolized pentamidine therapy on diagnosis and presentation of Pneumocystis carinii pneumonia.

Design: A retrospective study.

Setting: A tertiary care hospital.

Patients: Fifty-two consecutive patients with P. carinii pneumonia and underlying infection with the human immunodeficiency virus (HIV) who had bronchoscopy. Twenty-one patients who were on aerosolized pentamidine therapy served as the study group. Thirty-one patients who had not received the drug served as the control group.

Measurements and Main Results: The yield of bronchoalveolar lavage for P. carinii pneumonia was 62% for the study group and 100% for the control group (P < 0.05). This lower yield was significant for the subset of patients having their first episode of P. carinii pneumonia. The yield of transbronchial biopsy was similar for both groups of patients (81% compared with 84%). The yield of bronchoscopy was not influenced by use of zidovudine. Review of lavage specimen slides suggested that there may be fewer organisms present in patients receiving aerosolized pentamidine. An atypical roentgenographic presentation of upper lobe predominant infiltrates was seen in 38% of the study patients and 7% of the control patients. In addition, pneumothoraces and cystic changes were also frequently seen in the study patients. Gallium scans, when done, were also atypical in the study group. Markers of the severity of disease, however, were similar in both groups.

Conclusion: The yield of bronchoalveolar lavage for P. carinii pneumonia in HIV-infected patients is lower in patients receiving aerosolized pentamidine. Unusual roentgenographic presentations and atypical gallium scans are also found in this setting.





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