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Serum adhesion molecules as outcome predictors in adult severe sepsis patients requiring mechanical ventilation in the emergency department
Authors:Chia-Te Kung  Chih-Min Su  Hsueh-Wen Chang  Hsien-Hung Cheng  Sheng-Yuan Hsiao  Tsung-Cheng Tsai  Wen-Neng Chang  Nai-Wen Tsai  Hung-Chen Wang  Yu-Jih Su  Chin-Cheng Huang  Wei-Che Lin  Ben-Chung Cheng  Ya-Ting Chang  Yi-Fang Chiang  Cheng-Hsien Lu
Institution:1. Departments of Emergency Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan;2. Department of Biological Science, National Sun Yat-Sen University, Kaohsiung, Taiwan;3. Departments of Neurology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan;4. Departments of Neurosurgery, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan;5. Departments of Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan;6. Departments of Radiology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
Abstract:

Background and aim

Serum adhesion molecules play a pivotal role in the pathogenesis of sepsis syndrome. This study aimed to evaluate the prognostic value of serum adhesion molecules in patients with severe sepsis and mechanical ventilation (MV) at the emergency department.

Methods

Eighty-seven consecutive patients with severe sepsis, including 35 with MV, were evaluated. Serum samples were collected for analysis of serum adhesion molecules. The patients' clinical and laboratory data on admission were also recorded.

Results

The maximum 24-h APACHE II and 24-h SOFA scores were significantly higher in the severe sepsis patients requiring MV than in patients without MV (p = 0.02 and p < 0.001). Mortality rate was significantly higher in severe sepsis patients requiring MV than in patients without MV (40% 14/35] vs. 9.6% 5/52], p = 0.001).Both VCAM-1 level (p = 0.03) and lactate concentration (p = 0.04) on admission had significant differences between survivors and non-survivors in patients requiring MV. In the logistic regression model, only VCAM-1 level (p = 0.049) was independently predictive of mortality. By correlation analysis, lactate concentration significantly correlated with the mean VCAM-1 level on admission (γ = 0.484, p = 0.004). The area under the ROC curve for VCAM-1 level was 0.747 (p = 0.02, 95% CI: 0.576–0.918). The cut-off value of VCAM-1 level for predicting hospital mortality in severe sepsis patients receiving MV was 1870 ng/mL, with 77% sensitivity and 71% specificity; then the likelihood ratio equals 2.7.

Conclusions

In this study, VCAM-1 level is a more powerful outcome predictor of hospital mortality in severe sepsis patients requiring MV than lactate concentration and other conventional parameters on admission. This suggests that increased plasma VCAM-1 concentration may be useful in identifying who are at risk of hospital mortality among severely septic patients requiring MV.
Keywords:Outcome  Serum adhesion molecules  Severe sepsis
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