71.   That means that a portion of heart muscle had died from lack of oxygen, just as in his previous three attacks.

72.   The advent of clot-busting therapy, technically called thrombolysis, has revolutionized heart attack care by rescuing heart muscle from certain death.

73.   The amount of heart function lost after an attack, or series of attacks, depends, in part, on how much heart muscle has been destroyed.

74.   The alcohol can be toxic to other heart muscles, so physicians must know exactly where to administer the injection and follow it on monitors.

75.   The cause of the heart attacks included ischemic heart disease, in which blood flow is restricted, irregular heartbeats and deterioration of the heart muscle.

76.   The cells even developed into the three different types of cells needed to repair the heart muscle.

77.   The defect is an abnormal thickening of the heart muscle that prevents it from pumping properly.

78.   The damage can take such a form as cardiomyopathy, or heart muscle scarring, as in Lewis, or as myocarditis, inflammation of the heart wall.

79.   The drug is designed to ease the symptoms of angina, a pounding chest pain that occurs when cholesterol clogs the arteries that supply blood to the heart muscle.

80.   The devices were developed for people who are dying of heart failure, a condition in which the heart muscle becomes too weak to pump effectively.