Background: The purpose of this study is to evaluate the outcomes of hospitalized morbidly obese inpatients.
Methods: In this retrospective cohort study, we reviewed the records of all adult morbidly obese patients (defined as body mass index [BM]) >40 kg/m(2) upon admission) admitted to tertiary university hospital from 2000 to 2008. Primary outcome was hospital mortality. Secondary outcomes were hospital and intensive care unit (ICU) length of stay (LOS), need for and duration of mechanical ventilation (MV), and tracheostomy rates. We divided patients into quartiles based on their admission BMI. Baseline characteristics and outcomes were reported for each quartile.
Results: Over the 8-year period, we reviewed 897 admissions for 545 patients. The median number of admissions was 1 per patient (mean, 2.44 ± 2.9), with a range of 1 to 20. A total of 40.9% had more than one admission. Morbidly obese patients were more likely to be admitted to a medical service. Higher BMI quartiles had higher rates of ICU admission, MV, and rate of tracheostomy. Although the higher BMI quartiles had longer hospital LOS, hospital mortality did not significantly differ.
Conclusions: As BMI increases, utilization of medical resources also increases such as ICU admission, MV, longer hospital LOS, and tracheostomy. Although overall BMI interquartile mortality rates do not differ significantly in our study, utilization of valuable and costly hospital resources is a major challenge facing health care delivery. Our findings indicate the need for increased efforts and novel strategies for treatment, prevention, and resource allocation to deal with this emerging challenge.
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