Primary Outcome Measures:
Secondary Outcome Measures:
- Perioperative cardiac complications [ Time Frame: In hospital day 0-3, 30 days post surgery and one year ]
Non-fatal and fatal cardiac complications will be reviewed day 0- 3 and day 30 post-surgery and one year. Patients who are discharged home will be contacted by telephone by a research assistant for post-operative follow-up. Non-fatal cardiac complications include myocardial infarction, arrythmias, electrocardiogram ischemic changes, cardiac enzymes elevation, symptoms of congestive heart failure and/or angina
This pilot study consisting of a prospective non-randomized observational trial where a team of surgeon, anesthesiologist, and evaluator are blinded to CTCA results. We hypothesize that the preoperative use of noninvasive computer tomography, with the 320-row MDCT, to visualize the degree of coronary artery stenosis can lead to improved clinical prediction of perioperative cardiac complications.
The 320-row MDCT is based on the 64-row technology with the significant addition of a larger detector capable of scanning the heart within 1 sec or a cardiac cycle, thereby, eliminating patient-related artifacts and may produce higher image quality.13, 14 The scanning time of 5 seconds with the 320-row MDCT is significantly reduced compared to 8-10 seconds for the 64-row MDCT