Timing of Invasive Coronary Angiography in Patients Hospitalized With Non-ST Elevation Myocardial Infarction (a Real-World Analysis)

[...]we used the Nationwide Inpatient Sample (NIS) and Nationwide Readmission Database (NRD) to compare temporal trends, in-hospital mortality, and readmission rates associated with early and delayed CA strategies. Timing of CA was determined using the NIS/NRD variable “PRDAYn,” which represents the number of days from admission to procedure.3,4 Primary outcomes were trends of early versus delayed CA and in-hospital mortality using the NIS in all hospitalizations and prespecified patient subgroups (gender, age ≤65 or >65 years, diabetes, hypertension, atrial fibrillation, chronic kidney disease, chronic lung disease, heart failure, history of coronary artery bypass grafting, and history of percutaneous coronary intervention). [...]the timing of CA was recorded in days, not hours, so it is unclear how many patients with a very high-risk criteria underwent immediate CA (