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(Chest. 1972;62:273-276.)
© 1972 American College of Chest Physicians

The Bronchodilator Effect of Salbutamol Administered by IPPB to Patients with Asthma

A Controlled Comparison with Isoproterenol and Placebo

Shimon A. Spitzer M.D., F.C.C.P.1; Zwi Goldschmidt M.D.1; and Chagay Dubrawsky M.D.1

1 Cardiopulmonary Laboratory, Pulmonary Unit, Department of Internal Medicine B and the Department of Pediatrics, Beilinson Hospital Medical Center, Petach Tikvah; University of Tel Aviv School of Medicine

The bronchodilator and cardiovascular activity of isoproterenol hydrochloride (Isuprel) 5.0 mg, Salbutamol 5.0 and 2.5 mg and saline administered by IPPB to 30 patients with chronic bronchial asthma were determined and compared. Equal doses of isoproterenol and Salbutamol had similar peak bronchodilator effect, but the peak effect was reached much earlier with isoproterenol. Salbutamol had longer and more persistent bronchodilator activity without any appreciable increase in heart rate; rather, a decrease in heart rate ensued at the height of the bronchodilator activity. The bronchodilator activity of Salbutamol is dose dependent. While 5.0 mg Salbutamol showed a more prominent bronchodilator activity, 2.5 mg Salbutamol was better tolerated. It was concluded that Salbutamol, at a dose of 2.5 to 5.0 mg administered in the form of an aerosol by IPPB, provides a more useful short term treatment of asthma than isoproterenol.






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Copyright © 1972 by the American College of Chest Physicians.