[Even distribution of myocardial protection in surgery of the coronary arteries: successive cardioplegia at the origin of the aorta and at the coronary sinus].

In coronary bypass surgery myocardial protection by injection of a cardioplegic fluid is made uneven by the presence of stenotic segments. In order to make it even, the authors suggest that the fluid should be injected first into the aortic origin, then into the coronary sinus. This method should provide greater safety when multiples bypasses are performed and in cases of impaired left ventricular function.