Hypothermia is an independent risk factor for prolonged ICU stay in coronary artery bypass surgery: an observational

Yi-Chia Wang1, Hsing-Hao Huang1, Pei-Ching Lin1

  • 1Department of Anesthesiology, National Taiwan University College of Medicine and National University Hospital, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei, Taiwan, 10002.

Scientific Reports
|March 22, 2023
PubMed

Insights

Hypothermia after cardiac surgery (CABG) did not increase mortality or infection but prolonged intensive care unit (ICU) stays. Maintaining normal body temperature is crucial for better patient recovery after CABG surgery.

Area of Science:

  • Cardiology
  • Anesthesiology
  • Critical Care Medicine

Background:

  • Maintaining normothermia is vital during the perioperative period.
  • Warming after hypothermia can increase oxygen demand, potentially causing myocardial ischemia.
  • The role of hypothermia as an independent risk factor for morbidity and mortality in CABG patients requires investigation.

Purpose of the Study:

  • To determine if hypothermia is an independent risk factor for increased morbidity and mortality in patients undergoing Coronary Artery Bypass Grafting (CABG).

Main Methods:

  • Retrospective observational study of 206 patients undergoing CABG from January 2018 to June 2019.
  • Outcomes analyzed included mortality, surgical site infection, ventilator-dependent time, ICU stay, and hospitalization duration.
  • Statistical analysis adjusted for factors including sex, age, cardiopulmonary bypass duration, left ventricular ejection fraction, and EuroSCORE II.

Main Results:

  • No 30-day mortality was observed.
  • Hypothermia was not linked to increased surgical site infection or longer intubation times.
  • Hypothermia upon ICU admission, along with a higher EuroSCORE II, independently predicted prolonged ICU stay (OR 3.8 and 1.2, respectively).

Conclusions:

  • Hypothermia upon ICU admission is an independent risk factor for prolonged ICU stay in elective CABG patients.
  • While not linked to mortality or infection, hypothermia impacts recovery time.
  • Optimizing perioperative temperature management is essential for improving patient outcomes after CABG.

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