Volume 19 Supplement 2

Eighth International Symposium on Intensive Care and Emergency Medicine for Latin America

Open Access

Impact of obesity on critical care adult patients

  • Bruno F Mazza1,
  • Claudia M Antunes1,
  • Fernando Costa1,
  • Lucas J Ricotta1,
  • Luciano Quaini1,
  • Paulo F Marotto1,
  • Rosa GA Rocha1 and
  • Samantha L de Almeida1
Critical Care201519(Suppl 2):P29


Published: 28 September 2015


Obesity is a growing problem in our society today. A great number of obese patients are admitted to the ICU, and there could probably be worse outcomes and more complications during their stay in the ICU.


The objective of this study is to analyze the epidemiological characteristics and the outcome of two groups of patients, one with a body mass index (BMI) >30 kg/m2 (group 1) and another group with BMI <30 kg/m2 (group 2).


A retrospective analysis was performed from January to December 2014, using the database EPIMED®. We evaluated the epidemiological characteristics of patients and the outcome of them. Statistical analysis was performed using SPSS 22 software. The Mann-Whitney test was used to analyze numerical variables and the chi-square test to analyze the categorical variables. We considered data statistically significant if p <0.05.


We evaluated 1478 patients, 327 (22 %) in the group with BMI >30 kg/m2 (G1) and 1151 (78 %) in the group with (BMI) <30 kg/m2 (G2), who were admitted to the hospital ICU. The median of age in G1 was lower than G2 (60.4 ± 17.5 vs. 65.4 ± 20.5, p = 0.001). There was no difference between the groups in length of stay in the critical care unit (7.0 ± 12.0 vs. 5.8 ± 8.1), in the hospital (19.9 ± 26.7 vs. 17.7 ± 25.6) and SAPS 3 score (48.4 ± 16.8 vs. 47.5 ± 16.3) (p = NS). There is no difference in the mortality ratio in the ICU (group 1: 5.1 % vs. group 2: 6.8 %, p = NS) or in the hospital (group 1: 11.9 % vs. group 2: 10.1 %, p = NS).


Obesity did not increase the mortality rate, or the ICU or the hospital length of stay. There was no difference in the gravity score between the groups. Current prognostic scoring systems do not include BMI, possibly underestimating the risk of death, and other quality of care indexes in obese patients. New studies could be useful to clarify how BMI affects the management of obese patients in the ICU.

Authors’ Affiliations

Hospital Samaritano, Higienópolis, São Paulo


© Mazza et al. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.