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The appropriate number of board-certified cardiologists (BCC) for the treatment of acute myocardial infarction (AMI) has not been thoroughly examined in Japan. This study investigated whether the number of BCC/50 cardiovascular beds affects acute outcome in AMI treatment. Methods and Results: Data on 751 board-certified teaching hospitals and 63,603 patients with AMI were obtained from the Japanese Registry Of All cardiac and vascular Diseases (JROAD) and JROAD Diagnosis Procedure Combination (JROAD-DPC) databases between 1 April 2012 and 31 March 2014. The hospitals were categorized into 3 groups based on the median number of BCC/50 cardiovascular beds: first tertile, 5.0 (IQR, 4.0-5.7); second, 8.3 (IQR, 7.4-9.8); third, 15.3 (IQR, 12.5-22.7), and the patients with AMI admitted to the categorized hospitals were compared (first tertile, 12,002 patients; second, 23,930; third, 27,671). On hierarchical logistic modeling, the adjusted OR for 30-day mortality were 0.86 (95% CI: 0.74-1.00) for the second tertile and 0.75 (95% CI: 0.65-0.88) for the third tertile.

Number of Board-Certified Cardiologists and Acute Myocardial Infarction-Related Mortality in Japan ― JROAD and JROAD-DPC Registry Analysis ―