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Bariatric surgery operating room time--size matters.

Joseph A Sanford1, Bassam Kadry, Jay B Brodsky

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Higher body mass index (BMI) significantly increases bariatric surgery operating room (OR) time, primarily due to longer operation and anesthesia durations. Surgeons should anticipate extended OR times for patients with BMI over 60 kg/m².

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Area of Science:

  • Bariatric Surgery
  • Surgical Outcomes
  • Obesity Medicine

Background:

  • Obesity is a growing global health concern, necessitating effective bariatric surgical interventions.
  • Understanding factors influencing surgical efficiency is crucial for optimizing patient care and resource allocation.
  • Body Mass Index (BMI) is a key metric in assessing obesity and potential surgical risks.

Purpose of the Study:

  • To investigate the correlation between varying Body Mass Index (BMI) levels and the duration of specific components of bariatric surgical operating room (OR) time.
  • To identify which aspects of the surgical process are most affected by increased BMI in patients undergoing laparoscopic Roux-en-Y gastric bypass.
  • To provide data for improved OR scheduling and resource management in bariatric surgery.

Main Methods:

  • Retrospective analysis of 434 patients undergoing laparoscopic Roux-en-Y gastric bypass at Stanford University Medical Center (May 2008 - November 2013).
  • Patients were stratified into three BMI groups: 35 to <45 kg/m², 45.0 to <60 kg/m², and ≥60 kg/m².
  • Key metrics included total OR time, anesthetic induction, nursing preparation, operation duration, anesthesia emergence, and hospital stay.

Main Results:

  • Total operating room (OR) time increased progressively with higher BMI categories (202 min, 215 min, 235 min).
  • Operation time was the primary driver of increased OR time across BMI groups (147 min, 154 min, 163 min).
  • Anesthetic induction and emergence times were also significantly longer for patients in the highest BMI group (≥60 kg/m²).

Conclusions:

  • Elevated BMI, particularly above 60 kg/m², is associated with significantly longer operating room times for bariatric procedures.
  • Anesthetic induction and emergence phases are notably extended in patients with higher BMIs.
  • Healthcare facilities must adjust OR scheduling and resource allocation to accommodate the increased time required for super-obese patients undergoing bariatric surgery.