Timing of Coronary Angiography, Cardiac Surgery, and Adverse Renal and Cardiac Events (MARCE)

1. To examine two main predictor variables independently and then jointly in stratified and multivariate analyses for the outcomes of CSA-AKI, MARCE, need for RRT, and inpatient mortality, and the composite, as well as the outcomes of 30 day rehospitalization or death, and finally for the days out of hospital and alive adjusted to person-year of time 1. Days from coronary angiogram performed with IOCM to cardiac surgery (1, 2, 3, etc) 2. Thakar Acute Renal Failure (ARF) score (1 to 17) 2. To examine the interrelationships between time in days between angiogram and surgery and the ARF Score with the Society of Thoracic Surgery (STS) Risk score for mortality