Stress response to endoscopy
Background: Upper gastrointestinal endoscopy is often accompanied by tachycardia, which may lead to myocardial ischaemia. The pathogenesis for tachycardia is unknown, but the classic endocrine stress response may be of importance. Methods: Seventeen patients (median age, 60 years) undergoing diagnostic gastroscopy without sedation or supplemental oxygen therapy were monitored by means of electroca