Coronary Sinus Blood Flow in Trepopneic Angina: Case Report

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Abstract
Trepopnea refers to the preference for a particular recumbent position and a dislike of others. In 1937, Wood and Wolferth (1) introduced the term and reported their extensive observations of trepopnea in 52 patients with heart disease, including 3 with positional angina pectoris. We have studied a patient with coronary artery disease in whom the left lateral decubitus position induced angina. Cardiac catheterization was done using a thermodilution coronary sinus blood flow catheter, thus obtaining measurements of coronary blood flow in various body positions. A 41-year-old married practical nurse, gravida 6, para 4, was referred for cardiac catheterization and coronary