[Clinical pharmacology of agents affecting the tonus of the lower esophageal sphincter].

The effect of pharmacological drugs indicated for specific diseases on the lower esophageal sphincter, was studied in 195 patients. Pentagastrin increased the sphincter tone, secretin when used in peptic ulcer, did not influence the tone. Unlike atropine, a therapeutic course with pirenzepine (gastrozepin) for patients with peptic ulcer did not lower the tone of the lower esophageal sphincter. Diazepam significantly decreased indices of the sphincter tone. In the treatment of CHD patients with corinfar, a calcium antagonist, the sphincter tone was on a moderate but statistically significant decrease. Aminophylline in patients with chronic bronchitis made no effect on this index. The ratio of the sphincter tone stimulated with metoclopramide to its basal values was higher in the patients with initially lowered indices as compared to the patients in whom the initial tone was within normal.