The impact of body mass index on treatment outcomes among traumatic brain injury patients in intensive care units

  • S. Y. Chabok
  • H. Yazdanshenas
  • A. F. Naeeni
  • A. Ziabakhsh
  • S. S. Bidar
  • A. Reihanian
  • S. Bazargan-HejaziEmail author
Original Article



Obesity is a risk factor in treatment outcomes of critically ill patients. This study was conducted to determine the impact of obesity on the likelihood of recovery from traumatic brain injury (TBI) in intensive care unit (ICU) patients.


We carried out a prospective study on 115 head injury patients who were admitted to the ICU of Poursina Hospital, Rasht, in the one-year period between July 2006 and June 2007. Obese patients (body mass index [BMI] ≥ 30 kg/m2) were compared with non-obese patients (BMI < 30 kg/m2). Demographic information, acute physiology and chronic health evaluation scores, Injury Severity Scores (ISS), Glasgow Coma Scale scores, and ICU mortality incidences were recorded.


Obese patients had significantly higher ICU mortality rates compared to non-obese patients (p = 0.02). Furthermore, we observed a trend towards a higher ICU mortality rate in obese patients with ISS > 25 (p = 0.04). Moreover, obesity was associated with prolonged mechanical ventilation, ICU length of stay (ILOS), and hospital length of stay (HLOS) (p < 0.001).


Obesity was associated with increased ICU mortality and prolonged dependency on mechanical ventilation, ILOS, and HLOS in patients with TBI. However, further prospective studies with larger sample sizes are needed to substantiate these findings.


Obesity Body mass index ICU Traumatic brain injury Mortality Hospital length of stay ICU length of stay 



Research supported in part by: Guilan Road Trauma Research Center (GTRC); Clinical Research Development Unit of Poursina Hospital, and the National Institutes of Health, National Institute on Minority Health and Health Disparities (NIH-NIMHD Grant U54MD007598-formerly U54RR026138).

Conflict of interest

The authors have no conflict of interest to report.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • S. Y. Chabok
    • 1
  • H. Yazdanshenas
    • 2
  • A. F. Naeeni
    • 1
  • A. Ziabakhsh
    • 3
  • S. S. Bidar
    • 4
  • A. Reihanian
    • 3
  • S. Bazargan-Hejazi
    • 5
    • 6
    Email author
  1. 1.Guilan University of Medical SciencesRashtIran
  2. 2.Charles R. Drew University of Medicine and ScienceCollege of MedicineLos AngelesUSA
  3. 3.Road Trauma Research CenterGuilan University of Medical SciencesRashtIran
  4. 4.Tehran University of Medical SciencesTehranIran
  5. 5.Charles R. Drew UniversityCollege of MedicineLos AngelesUSA
  6. 6.David Geffen School of MedicineUniversity of CaliforniaLos AngelesUSA

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