[Clinical Utility of Revised Cardiac Risk Index to Predict Perioperative Cardiac Events in Elderly Patients with...

Area of Science:

• Cardiology
• Geriatric Medicine
• Anesthesiology

Background:

• Elderly patients with coronary heart disease (CHD) undergoing non-cardiac surgery face elevated risks of perioperative major adverse cardiac events (MACE).
• The revised cardiac risk index (RCRI) is commonly used but its predictive accuracy in this specific population is uncertain.

Purpose of the Study:

• To evaluate the predictive performance of the RCRI for perioperative MACE in elderly patients with CHD undergoing non-cardiac surgery.
• To identify independent risk factors for perioperative MACE in this cohort.
• To develop and assess a novel risk scoring system for improved MACE prediction.

Main Methods:

• A retrospective study included 2100 elderly patients (≥65 years) with CHD undergoing non-cardiac surgery.
• Data on clinical factors were extracted, and RCRI and reconstructed-RCRI (R-RCRI) scores were calculated.
• Multivariate logistic regression and ROC curve analysis were used to compare predictive values of RCRI, R-RCRI, and a new risk scoring system.

Main Results:

• The incidence of perioperative MACE was 5.4%.
• Six independent risk factors for MACE were identified: age ≥80, female, heart failure history, insulin-dependent diabetes, preoperative ST abnormality, and ASA grade ≥III.
• The area under the ROC curve for the new risk scoring system (0.741) was significantly better than RCRI (0.586) and R-RCRI (0.552).

Conclusions:

• The RCRI demonstrates poor predictive ability for perioperative MACE in elderly patients with CHD undergoing non-cardiac surgery.
• A newly developed risk scoring system shows superior predictive performance for MACE in this high-risk population.
• Improved cardiac risk assessment strategies are needed for elderly CHD patients undergoing non-cardiac procedures.