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THE SPECIALIST: Dr. Gregory Fischer The director of adult cardiothoracic anesthesia at Mount Sinai, Dr. Gregory Fischer specializes in taking care of patients who are undergoing heart and lung surgeries, including echocardiography. Eighty percent of his patients have mitral valve problems. WHO’S AT RISK The heart’s mitral valve doesn’t get a lot of attention from the public, but doctors estimate ...

THE SPECIALIST: Dr. Gregory Fischer The director of adult cardiothoracic anesthesia at Mount Sinai, Dr. Gregory Fischer specializes in taking care of patients who are undergoing heart and lung surgeries, including echocardiography. Eighty percent of his patients have mitral valve problems. WHO’S AT RISK The heart’s mitral valve doesn’t get a lot of attention from the public, but doctors estimate ...