Analysis of 259,891 patients hospitalized for an acute myocardial infarction (MI) demonstrates a gradual decline in the number of MIs during the spring, reaching a nadir in the summer, and an increase during the fall, reaching a maximum in the winter. Approximately 53 percent more infarctions occurred in the winter or spring compared with the summer.
Data from Spencer, FA, Goldberg, RJ, Becker, RC, et al, and the Participants in the National Registry of Myocardial Infarction, J Am Coll Cardiol 1998; 31:1226.
