Risk factors for the development of acute lung injury in patients with septic shock: an observational cohort study.
OBJECTIVE
Almost half of the patients with septic shock develop acute lung injury (ALI). The understanding why some patients do and others do not develop ALI is limited. The objective of this study was to test the hypothesis that delayed treatment of septic shock is associated with the development of ALI.


METHODS
Observational cohort study.


METHODS
Medical intensive care unit in a tertiary medical center.


METHODS
Prospectively identified patients with septic shock who did not have ALI at the outset, excluding those who denied research authorization.


RESULTS
High frequency cardio-respiratory monitoring, arterial gas analysis, and portable chest radiographs were reviewed to identify the timing of ALI development. Risk factors present before ALI development were identified by review of electronic medical records and analyzed in univariate and multivariate analyses. Seventy-one of 160 patients (44%) developed ALI at a median of 5 (range 2-94) hours after the onset of septic shock. Multivariate logistic regression analysis identified the following predictors of ALI development: delayed goal-directed resuscitation (odds ratio [OR] 3.55, 95% confidence interval [CI] 1.52-8.63, p = .004), delayed antibiotics (OR 2.39, 95% CI 1.06 -5.59, p = .039), transfusion (OR 2.75, 95% CI 1.22-6.37, p = .016), alcohol abuse (OR 2.09, 95% CI .88-5.10, p = 0.098), recent chemotherapy (OR 6.47, 95% CI 1.99-24.9, p = 0.003), diabetes mellitus (OR .44, 95% CI .17-1.07, p = .076), and baseline respiratory rate (OR 2.03 per sd, 95% CI 1.38-3.08, p < .001).


CONCLUSIONS
When adjusted for known modifiers of ALI expression, delayed treatment of shock and infection were associated with development of ALI.
Iscimen
Remzi
R
Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Mayo Clini), Rochester, Minnesota, USA.
Cartin-Ceba
Rodrigo
R
Yilmaz
Murat
M
Khan
Hasrat
H
Hubmayr
Rolf D
RD
Afessa
Bekele
B
Gajic
Ognjen
O
D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012128:Respiratory Distress Syndrome / Q000209:etiology*; D012307:Risk Factors; D012772:Shock, Septic / Q000150:complications* / Q000628:therapy; D013997:Time Factors