Word: mitral
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...Raymond G. Wilmer, 47, a housewife in the Cleveland suburb of Parma, had a mitral valve so scarred from rheumatic fever that it did not let enough blood flow from the left auricle into the left ventricle. Often such valves can be repaired with a deft scalpel: many are now replaced with artificial valves. But Mrs. Wilmer's valve was too damaged for repair, and scarring left no room for an artificial implant...
Marcel L. DeRudder, 65, a former miner, long a victim of rheumatic heart disease, had been unable to do any work for 21 years. Dr. DeBakey (TIME cover, May 28) and the cardiologists on his team soon found that DeRudder had a badly damaged and calcified mitral valve, through which blood passes from the left auricle to the left ventricle. This valve had worked so poorly for so long that the overtaxed left ventricle had become enlarged, flabby and inefficient. It was possible that Patient DeRudder could survive with nothing more than an artificial valve, but the surgeons could...
...suction into the pump chamber, held for an instant by a check valve, then pushed by the pressure of the pump's downstroke into the aorta, which supplies all the body's arteries. The rest took nature's course. It passed through the newly implanted artificial mitral valve into the ventricle, which continued to beat, and out into the aorta...
Miss I.J.-mitral valve replacement, with pump...
...mitral commissurotomy, with pump stand...