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Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
09:12

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Weekend Operation and Outcomes of Patients Admitted for Nonelective Coronary Artery Bypass Surgery

Muhammad Siyab Panhwar1, Salil V Deo2, Tanush Gupta3

  • 1Tulane University Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, Louisiana.

The Annals of Thoracic Surgery
|November 27, 2019
PubMed

Insights

The weekend effect on nonelective coronary artery bypass grafting (CABG) shows higher crude mortality for weekend surgeries. However, risk-adjusted mortality is similar, suggesting sicker patients undergo weekend CABG.

Area of Science:

  • Cardiovascular Surgery
  • Health Services Research
  • Public Health

Background:

  • The

Purpose of the Study:

  • Investigate the

Main Methods:

  • Utilized the 2013-2014 National Inpatient Sample (NIS) database.
  • Analyzed outcomes for adult patients undergoing nonelective coronary artery bypass grafting (CABG).
  • Compared outcomes between weekend and weekday admissions.

Main Results:

  • Weekend CABG patients had higher rates of ST-elevation acute coronary syndrome, required more intra-aortic balloon pump support, and underwent more same-day procedures.
  • Unadjusted analysis showed increased mortality for weekend admissions (6.1% vs 3.2%).
  • Risk-adjusted analysis revealed similar mortality rates between weekend and weekday CABG (adjusted odds ratio, 1.22; P = .47).

Conclusions:

  • Patients undergoing nonelective CABG on weekends had higher crude mortality but similar risk-adjusted mortality compared to weekdays.
  • The observed excess mortality for weekend CABG is likely due to a sicker patient cohort admitted during weekends.
  • This suggests that patient acuity, rather than the timing of surgery itself, may explain outcome differences.
Abstract

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