Two cases of Pneumocystis carinii pneumonia occurred in human immunodeficieney virus infected patients. Supplemental treatment with aerosolised pentamidine isethionate.

Two cases of Pneumocystis carinii pneumonia occurred in human immunodeficiency virus infected patients who were diagnosed by the aspiration-lung-biopsy. They were treated with 4 mg/kg of pentamidine isethionate intravenously administered followed by pentamidine aerosol inhalation. Although clinical and laboratory findings were improved by the fifth or seventh day of intravenous therapy, substantial leukocytopenia, from 3,000/cmm to 600/cmm and from 2,700/cmm to 1,000/cmm, occurred. At this point, the method of pentamidine administration was switched to inhalation. Pentamidine 600 mg in 30 ml distilled water was aerosolised using ultrasonic nebuliser and exposed for a 30-minute period once daily. In both cases, chest x-rays showed improvements: The disappearance of P. carinii were obtained in two weeks. Mild coughing was the sole adverse reaction encountered during the course of aerosol inhalation.