Volume 13 Supplement 3

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

Open Access

Risk factors and mortality associated with acute respiratory failure in the ICU

  • DO Couto1,
  • NU Oliveira1,
  • MMB Barroso1,
  • DLR Santos1,
  • FCP Teixeira1,
  • AA PeixotoJúnior1 and
  • FA Meneses1
Critical Care200913(Suppl 3):P43

https://doi.org/10.1186/cc7845

Published: 23 June 2009

Introduction

Acute respiratory failure (ARF) is a common medical problem in the ICU.

Methods

A retrospective study in the general ICU of a quaternary hospital from December 2005 to April 2008.

Results

Five hundred and four patients with the mean age of 53.9 ± 19.9 years and a female majority (56.3%) were included. APACHE II (25.0 ± 7.9 vs 17.9 ± 8.1, P < 0.001), length of stay (9 (5 to 14) vs 3 (1 to 5) days, P < 0.001) and mortality rate (52.0% vs 22.1%, P < 0.001) were higher in patients that developed ARF during the ICU stay, compared with those without ARF. The risk factors most frequently associated with ARF were pulmonary embolism, pneumonia and hypovolemic shock (Table 1).
Table 1

Chi-square of risk factor indicators to ARF

 

Acute respiratory failure (n (%))

  

Risk factor

At admission (n = 336)

During ICU stay (n = 26)

No (n = 144)

χ2

P value

Pneumonia

73 (85.9)

0 (0)

2 (14.1)

18.58

<0.001

Pulmonary embolism

23 (92)

1 (4)

1 (4)

8.2

0.016

Hypovolemic shock

8 (44.4)

3 (16.7)

7 (38.9)

6.9

0.031

Conclusion

Pulmonary embolism, pneumonia and hypovolemic shock were risk factors most associated with ARF, and patients that developed ARF during the ICU stay had high mortality.

Authors’ Affiliations

(1)
Intensive Care Unit, Federal University of Ceará

Copyright

© BioMed Central Ltd 2009

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