LAUSR

BACKGROUND Knee surgery is a very common surgery. The risk of cardiac events is thought to be low. The goal of this study was to evaluate inpatients adverse outcomes such as ST-elevation myocardial infarction (STEMI) or Non-ST- elevation myocardial infarction in patients undergoing knee surgery. METHOD Using the nation Inpatient sample database, we evaluated the occurrence of STEMI and Non-STEMI in a very large population. RESULTS Using two random samples from 2005 and 2014 10 years apart involving 7,444 knee surgeries, the occurrence of STEMI and Non-STEMI were very low. In 2005, only 1 STEMI (0.0%) and 4 Non-STEMI (0.1%) events occurred in inpatient knee surgery patients. In the 2014 group, 0 STEMI (0.0%) and 5 Non-STEMI (0.16%) events occurred in inpatient knee surgery patients. Overall, STEMI or Non-STEMI events occurred in 0.13% of inpatient knee surgery procedures. CONCLUSION Inpatients' adverse outcome of patients undergoing Knee surgery is very low suggesting that extensive cardiac workup for knee surgery may not be warranted.