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Cardiologist Arthur J. Moss, whose research saved hundreds of thousands of lives and improved the standard of care for legions of people with heart disease, died on February 14, 2018. He was 86.

During a career spanning six decades, Moss made some of the most significant and long-lasting discoveries in the prevention and treatment of sudden cardiac death. His astounding accomplishments in scientific research and clinical care stemmed especially from his special devotion to patients; he understood the importance of listening, building trust and working together to bring about change. He was also a skilled leader, able to foster meaningful collaborations that led to some of the most productive clinical trials in all of cardiology.

"Arthur was a man of absolute integrity, both of science and of character, and an amazing visionary who could see where the field of electrophysiology was headed long before others," said Wojciech Zareba, M.D., Ph.D., director of the Heart Research Follow-up Program at the University of Rochester Medical Center, who worked closely with Moss for the past 26 years. "He was eternally optimistic in all aspects of his life; he brought a positive attitude to everything he did and didn't worry about the small stuff, which helped him accomplish great things."

In 1958, as an intern at Massachusetts General Hospital, Moss planned to pursue a career in hematology. That summer he was called to serve in the United States Navy. When he arrived in Pensacola, Fla., his commanding officers thought he was a cardiologist, for reasons unbeknownst to him. They asked Moss to teach flight surgeons electrocardiography, a test known as an EKG that checks the electrical activity of the heart. Undaunted, he read multiple books on the topic and taught them. The intricacy of the heart's electrical activity captured Moss' interest and he never looked back.