• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

SAGES

Reimagining surgical care for a healthier world

  • Home
    • COVID-19 Annoucements
    • Search
    • SAGES Home
    • SAGES Foundation Home
  • About
    • Who is SAGES?
    • SAGES Mission Statement
    • Advocacy
    • Strategic Plan, 2020-2023
    • Committees
      • Request to Join a SAGES Committee
      • SAGES Board of Governors
      • Officers and Representatives of the Society
      • Committee Chairs and Co-Chairs
      • Full Committee Rosters
      • SAGES Past Presidents
    • Donate to the SAGES Foundation
    • Awards
      • George Berci Award
      • Pioneer in Surgical Endoscopy
      • Excellence In Clinical Care
      • International Ambassador
      • IRCAD Visiting Fellowship
      • Social Justice and Health Equity
      • Excellence in Community Surgery
      • Distinguished Service
      • Early Career Researcher
      • Researcher in Training
      • Jeff Ponsky Master Educator
      • Excellence in Medical Leadership
      • Barbara Berci Memorial Award
      • Brandeis Scholarship
      • Advocacy Summit
      • RAFT Annual Meeting Abstract Contest and Awards
  • Meetings
    • NBT Innovation Weekend
    • SAGES Annual Meeting
      • 2023 Scientific Session Call For Abstracts
      • 2023 Emerging Technology Call For Abstracts
    • CME Claim Form
    • Industry
      • Advertising Opportunities
      • Exhibit Opportunities
      • Sponsorship Opportunities
    • Future Meetings
    • Past Meetings
      • SAGES 2022
      • SAGES 2021
    • Related Meetings Calendar
  • Join SAGES!
    • Membership Benefits
    • Membership Applications
      • Active Membership
      • Affiliate Membership
      • Associate Active Membership
      • Candidate Membership
      • International Membership
      • Medical Student Membership
    • Member News
      • Member Spotlight
      • Give the Gift of SAGES Membership
  • Patients
    • Healthy Sooner – Patient Information for Minimally Invasive Surgery
    • Patient Information Brochures
    • Choosing Wisely – An Initiative of the ABIM Foundation
    • All in the Recovery: Colorectal Cancer Alliance
    • Find a SAGES Member
  • Publications
    • SAGES Stories Podcast
    • SAGES Clinical / Practice / Training Guidelines, Statements, and Standards of Practice
    • Patient Information Brochures
    • TAVAC – Technology and Value Assessments
    • Surgical Endoscopy and Other Journal Information
    • SAGES Manuals
    • SCOPE – The SAGES Newsletter
    • COVID-19 Annoucements
    • Troubleshooting Guides
  • Education
    • OpiVoid.org
    • SAGES.TV Video Library
    • Safe Cholecystectomy Program
      • Safe Cholecystectomy Didactic Modules
    • Masters Program
      • SAGES Facebook Program Collaboratives
      • Acute Care Surgery
      • Bariatric
      • Biliary
      • Colorectal
      • Flexible Endoscopy (upper or lower)
      • Foregut
      • Hernia
      • Robotics
    • Educational Opportunities
    • HPB/Solid Organ Program
    • Courses for Residents
      • Advanced Courses
      • Basic Courses
    • Video Based Assessments (VBA)
    • Robotics Fellows Course
    • MIS Fellows Course
    • Facebook Livestreams
    • Free Webinars For Residents
    • SMART Enhanced Recovery Program
    • SAGES OR SAFETY Video
    • SAGES at Cine-Med
      • SAGES Top 21 MIS Procedures
      • SAGES Pearls
      • SAGES Flexible Endoscopy 101
      • SAGES Tips & Tricks of the Top 21
  • Opportunities
    • NEW-Area of Concentrated Training Seal (ACT)-Advanced Flexible Endoscopy-Coming Soon!
    • SAGES Fellowship Certification for Advanced GI MIS and Comprehensive Flexible Endoscopy
    • Multi-Society Foregut Fellowship Certification
    • SAGES Research Opportunities
    • Fundamentals of Laparoscopic Surgery
    • Fundamentals of Endoscopic Surgery
    • Fundamental Use of Surgical Energy
    • Job Board
    • SAGES Go Global: Global Affairs and Humanitarian Efforts
  • Search
    • Search All SAGES Content
    • Search SAGES Guidelines
    • Search the Video Library
    • Search the Image Library
    • Search the Abstracts Archive
  • Store
    • “Unofficial” Logo Products
  • Log In

The Use of Patient Factors to Improve Operative Duration Prediction During Laparoscopic Cholecystectomy

Cornelius A Thiels, DO, MBA, Denny Yu, PhD, Amro Abdelrahman, MBBS, Elizabeth Habermann, PhD, Susan Hallbeck, PhD, Juliane Bingener, MD. Mayo Clinic

INTRODUCTION: Reliable prediction of operative duration is essential for maximizing resource utilization, reducing cost, and improving patient and surgical team satisfaction. Traditional scheduling systems utilize historical operative durations by procedure type to forecast future procedures. We hypothesized that the inclusion of patient-specific factors would improve the accuracy in predicting operative duration.  

METHODS: We reviewed all cases for a common operation, elective laparoscopic cholecystectomy (LC) performed between January 2007 to June 2013 at a single institution. Non-elective procedures and those with concurrent procedures were excluded. Univariate analysis evaluated the effect of the following patient factors on operative duration: age, gender, BMI, ASA, liver function test (LFT), WBC, amylase, smoking, and comorbidities. Multivariable linear regression models were constructed using the significant factors (p<0.05). The patient factors model was compared to the institutional prediction model, which uses historical surgeon specific operative duration. External validation was performed using the National Surgical Quality Improvement Program (NSQIP) database.

RESULTS: 1801 LC patients met the inclusion criteria. Univariate analysis of female sex was associated with reduced operative duration (-7.52 minutes, p<0.001 vs male sex) while increasing BMI (+5.06 minutes BMI 25-29.9, +6.89 minutes BMI 30-34.9, +10.38 minutes BMI 35-39.9, +17.02 minutes BMI 40+, all p<0.05 vs normal BMI), increasing ASA (+7.39 minutes ASA III, +38.26 minutes ASA IV, all p<0.01 vs ASA I), and elevated LFTs (+4.85 minutes, p=0.018 vs unknown LFTs) were predictive of increased operative duration. A model was then constructed using these predictive factors. Of the patients with available institutional predicted operative duration (n=633), the traditional institutional model was poorly predictive of actual operative duration (R2=0.001) compared to the patient factors model (R2=0.079). The addition of surgeon as a variable in the patient factors model further improved predictive ability of the model (R2=0.175, Figure 1). The model remained predictive on external validation using n=20,034 LC patients from the NSQIP database (R2=0.103).

CONCLUSION: The current operative scheduling standard is unreliable and may contribute to costly over- and under-estimation of operative duration. The use of routinely-available pre-operative patient factors can improve the prediction of operative duration during LC. 

Figure 1. Relationship between actual and predicted operative duration for three models. 

61

Share this:

  • Twitter
  • Facebook
  • LinkedIn
  • Pinterest
  • WhatsApp
  • Reddit

Related

« Return to SAGES 2016 abstract archive

Our Mission

Innovate, educate and collaborate to improve patient care.

Recently, on SAGES…

Critical View of Safety (CVS) Challenge QR Code

The SAGES Critical View of Safety Challenge – Donate Your Lap Chole Videos!

The Society of American Gastrointestinal and Endoscopic Surgeons is hosting the first Artificial Intelligence Data Challenge conducted by surgeons. The aim of this challenge is to generate a large and diverse dataset of laparoscopic cholecystectomy videos, annotated with respect to the subcomponents of the Critical View of Safety (CVS). Computer scientists from all over the […]

Respuesta de SAGES al Estudio NordICC sobre el beneficio de las colonoscopias de detección

SAGES desea aclarar los resultados del estudio NordICC y colocarlos en contexto de los esfuerzos de varias agencias nacionales para reducir el riesgo de cáncer colorrectal – la segunda causa de muerte por cáncer más frecuente en los Estados Unidos-, mediante la promoción de la detección y tratamiento oportuno de las lesiones.

SAGES Response to NordICC Study Regarding Benefit of Screening Colonoscopies

The NordICC Study recently published in The New England Journal of Medicine and widely reported on by media outlets has raised questions regarding the benefit of screening colonoscopy in lowering the risk of colorectal cancer and cancer-related deaths among otherwise healthy and symptom-free men and women aged 55 to 64. Provocative headlines and commentaries have […]

Contact SAGES

Society of American Gastrointestinal and Endoscopic Surgeons
11300 W. Olympic Blvd Suite 600
Los Angeles, CA 90064 USA
webmaster@sages.org
Tel: (310) 437-0544

Find Us Around the Web!

  • Facebook
  • Twitter
  • YouTube

Important Links

SAGES 2023 Meeting Information

Healthy Sooner: Patient Information

SAGES Guidelines, Statements, & Standards of Practice

SAGES Manuals

 

  • taTME Study Info
  • Foundation
  • SAGES.TV
  • MyCME
  • Educational Activities

Copyright © 2023 Society of American Gastrointestinal and Endoscopic Surgeons