Phentolamine action in permeability of airways at patients with bronchial asthma.

In this work, effect of phentolamine as antagonist of alpha-1 adrenergic receptor in patients with bronchial asthma and with obstructive chronic bronchitis was studied. Parameters of the lung function are determined by body plethysmography. Raw and ITGV were registered and SRaw was calculated as well.