Primary Esophageal Motor Disorders

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Abstract
The effect of nifedipine on esophageal symptoms was evaluated in 20 patients with primary esophageal motor disorders. The patients were randomized to receive nifedipine (10 mg t.i.d.) or placebo for two weeks, and then crossed over to receive the other medication. Ten patients had hypertensive lower esophageal sphincter, four had diffuse esophageal spasm, three had vigorous achalasia, two had "nutcracker esophagus," and one patient had achalasia. The score of chest pain or dysphagia was recorded on a scale of 0 to 10 during each study. The patients who received nifedipine improved significantly compared to those who received placebo. This improvement was most marked in patients with hypertensive lower esophageal sphincter. No significant side effects or changes in blood pressure were encountered in any of the study groups. Our results indicate that patients with primary esophageal motor disorders have a good clinical response to nifedipine therapy.

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