[Gastroscopy and coronary risk (author's transl)].

In 50 patients, both outpatients and inpatients, electrocardiograms were recorded in different phases during esophagogastroscopy. The changes which occurred, such as tachycardia, arrhythmias, and disorders of repolarization are discussed. The increased frequency during the initial stage of the endoscopy, which may assume an already dangerous dimension for patients with coronary heart disease, merits particular attention.