Risk factors for in-hospital myocardial infarction after shoulder arthroplasty.

: As cardiovascular complications are associated with significant morbidity and mortality in patients who have arthroplasty, it is important to analyze risk factors for perioperative cardiac morbidity after shoulder arthroplasty. Using the Nationwide Inpatient Sample, we stratified patients who underwent shoulder arthroplasty into those who had an acute myocardial infarction after arthroplasty and a larger cohort of patients who did not. The top 4 predictors for acute myocardial infarction after shoulder arthroplasty were congestive heart failure, angina pectoris, complicated diabetes mellitus, and male sex. Other pertinent factors were older age, Caucasian ethnicity, and primary diagnosis of proximal humerus fracture. It is prudent for surgeons and patients to understand the degree to which perioperative cardiac morbidity affects surgical recovery.