The Physiology of Heartburn

Abstract
Heartburn is a subjective complaint and, as a descriptive term, suffers from lack of specificity. It is frequently used to describe any form of anterior chest discomfort except the classic oppressive pain of angina pectoris; we have seen the word used to enumerate sharp subaxillary shooting pains and suprapubic aching. Our definition as applied to the subjects in this study is more limited: heartburn, in our opinion, is a painful burning sensation located retrosternally in the midline between the xiphoid process and the manubrium. Its duration is variable, but it always has a moving quality. It may radiate to the

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