Time of day affects heart attack severity

[UPI.com, November 21, 2011] The severity of a heart heart -- and subsequent recovery -- depends on what time of day the heart attack occurs, U.S. researchers say.

Dr. Jay H. Traverse, a cardiologist at the Minneapolis Heart Institute at Abbott Northwestern Hospital in Minneapolis and physician researcher with Minneapolis Heart Institute Foundation who was the study's senior author, and colleagues conducted an analysis of 1,031 patients who had acute heart attacks.