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Dor procedure
In 1985, Vincent Dor, MD, introduced endoventricular circular patch plasty (EVCPP), or the Dor procedure, as a viable method for restoring a dilated left ventricle to its normal, elliptical geometry. The Dor procedure, which uses a circular suture and a Dacron patch to correct LV aneurysms and exclude scarred parts of the septum and ventricular wall, would prove to be the best option amongst the other methods of ventricular remodeling, i.e. Cooley’s linear suturing and Jatene’s circular external suturing. EVCPP is a relatively easy procedure that covers all aspects of successful heart restoration—restores ventricular shape, increases ejection fraction, decreases the left ventricular end systolic volume index (LVESVI), and allows for complete coronary revascularization.
==Cardiac Geometry==
The myocardium consists of a single, continuous tissue that wraps around itself, spiraling up from the apex of the heart, to form a helix with elliptically shaped ventricles. This spiral produces an oblique muscle fiber orientation, meaning that the fibers form a more ventricle ‘x’ shape, so that when fibers shorten 15%, it produces a 60% ejection fraction. Because of its elliptical shape and defined apex, the ventricle is subjected to a relatively low level of lateral stress.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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