Preoperative Cardiac Risk Assessment and Management

Patient Evaluation and Risk Stratification

The American College of Cardiology recommends that patients with RCRI ≥3 require comprehensive preoperative cardiac monitoring with troponin measurement pre-operatively and at 24 and 48 hours post-surgery, functional capacity assessment using the Duke Activity Status Index, and consideration of pharmacological stress testing only if results would alter management decisions 1, 2
High-risk patients are defined as those with RCRI ≥3, which predicts a 40.2% incidence of major adverse cardiac events (MACE) including myocardial injury after noncardiac surgery (MINS), myocardial infarction, cardiac arrest, or cardiac death 1, 2
The six RCRI components each contribute 1 point, including history of ischemic heart disease, congestive heart failure 1, cerebrovascular disease 1, preoperative insulin-dependent diabetes mellitus 1, chronic renal dysfunction (creatinine >2.0 mg/dL) 1, and high-risk surgery 1

All high-risk patients must have blood pressure, heart rate, and cardiac physical examination documented within 2 hours before surgery 3
High-risk patients require comprehensive preoperative laboratory evaluation, including cardiac troponin measurement (baseline essential for comparison) 1, full blood count and renal function 1, and coagulation profile (prothrombin time, platelet count) 4
Assess functional capacity using the Duke Activity Status Index (DASI) or the two-flight stairs test, as functional capacity is an independent predictor of perioperative risk 3, 1

Continue beta-blockers in all patients already taking them chronically (Class I recommendation) 4
Continue statins in all patients currently taking them (Class I recommendation) 4
Continuation of ACE inhibitors or ARBs is reasonable perioperatively (Class IIa recommendation) 4

Measure cardiac troponin at 48-72 hours after surgery in all high-risk patients (RCRI ≥2) 1
Use the surgical Apgar score <7 to identify patients requiring biomarker monitoring regardless of preoperative RCRI 1

The RCRI performs poorly in vascular surgery patients, substantially underestimating cardiac risk by 1.7- to 7.4-fold, and alternative tools like the Vascular Study Group Cardiac Risk Index (VSG-CRI) or the Gupta MICA calculator should be considered for these patients 1
Use the Thoracic Revised Cardiac Risk Index (ThRCRI) instead of standard RCRI for thoracic surgery patients, as it provides more accurate risk assessment with weighted factors specific to this population 1, 2
Routine preoperative coronary angiography is not recommended 1, 4
Stress testing should only be performed when abnormal results would change management—either through coronary revascularization, medication adjustments, or surgical cancellation 1