[Polygraphic study of systolic rates after intravenous administration of salbutamol]

The effects of salbutamol on the polygraphic pattern were studied in 10 patients with chronic obstructive lung disease. Salbutamol, administered by i.v. injection in a single dose of 100 gamma, caused an increase of heart rate, a decrease of PEP (by decrease in the TCI), a decrease of the Wessler's index and an increase of ejection fraction. These results suggest that salbutamol produces an improvement in cardiac function either by a direct inotropic action or by an afterload decrease.