Comparison of the performance of the AUB-HAS2 Cardiovascular Risk Index in emergency vs elective surgeries

Eman Sbaity1, Hani Tamim1, Nader G Zalaquett1

  • 1American University of Beirut Medical Center, Beirut, Lebanon.

Journal of Cardiology
|February 21, 2024
PubMed

Insights

The AUB-HAS2 Cardiovascular Risk Index effectively stratifies risk for both emergency and elective surgeries. This validated tool demonstrates good discriminatory power, aiding preoperative cardiovascular evaluation.

Area of Science:

  • Cardiovascular Surgery
  • Surgical Risk Assessment
  • Health Services Research

Background:

  • The AUB-HAS2 Cardiovascular Risk Index is a novel tool for preoperative cardiovascular risk assessment.
  • It incorporates six key data elements: cardiac history, angina/dyspnea symptoms, age ≥ 75, hemoglobin < 12 g/dL, vascular surgery, and emergency surgery.

Purpose of the Study:

  • To compare the performance and risk stratification capabilities of the AUB-HAS2 index in emergency versus elective non-cardiac surgeries.
  • To evaluate the index's discriminatory power across different surgical settings.

Main Methods:

  • Analysis of 1,167,414 non-cardiac surgeries from the American College of Surgeons National Surgical Quality Improvement Program database.
  • Patients were assigned an AUB-HAS2 score based on the presence of the six risk factors.
  • Outcomes measured included 30-day mortality, myocardial infarction, and stroke.

Main Results:

  • The AUB-HAS2 index demonstrated a gradual increase in risk with higher scores in both emergency (7.0%) and elective (1.4%) surgery cohorts (p<0.0001).
  • The index exhibited good and comparable discriminatory power in both groups, with AUCs of 0.804 for emergency and 0.791 for elective surgeries.
  • Higher incidence of adverse outcomes was observed in emergency surgeries compared to elective surgeries (p<0.0001).

Conclusions:

  • The AUB-HAS2 index is a versatile and effective tool for stratifying cardiovascular risk in both emergency and elective surgical patients.
  • The index possesses good discriminatory power, proving equally useful across diverse surgical contexts.
Abstract

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