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 RESEARCH ARTICLE
Year : 2017  |  Volume : 21  |  Issue : 11  |  Page : 719--725

A clinical study on the initial assessment of arterial lactate and base deficit as predictors of outcome in trauma patients


1 Department of Emergency Medicine, JSS Medical College and Hospital, Mysore, India
2 Department of Emergency Medicine, Kasturba Medical College, Manipal, India
3 Department of Emergency Medicine, St. John's Medical College and Hospital, Bengaluru, Karnataka, India

Correspondence Address:
Prithvishree Ravindra
Department of Emergency Medicine, Kasturba Medical College, Manipal, Udupi, Karnataka - 576 104
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijccm.IJCCM_218_17

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Background: Trauma is a leading cause of mortality in India. Outcomes can be improved by early recognition of hemorrhagic shock and expedited management. At present, we rely on traditional vital signs, which are not sensitive measures. Point of care biochemical markers have been emerging as prognostic markers in trauma, but have not been studied in Indian setting. Aims: This study aims to study the association between arterial lactate and base deficit (BD) at emergency department (ED) admission and 24 h outcome in trauma patients at risk of hemodynamic compromise. Materials and Methods: This was a prospective observational study on 100 trauma patients at risk of hemodynamic compromise in tertiary care center ED. Arterial blood gas analysis at admission and 24 h outcomes were noted and statistically analyzed. Results: Arterial lactate ≥4 mmol/L (sensitivity 100% and specificity 85.9%), BD ≥12 mEq/L (sensitivity 87.5% and specificity 82.6%) had more sensitivity than vital signs for predicting 24 h mortality. Higher lactate and BD were associated with increased blood transfusion requirement. Best cutoff values for predicting transfusion were lactate ≥2.9 mmol/L (sensitivity 65.2% and specificity 90.7%), BD ≥8 mEq/L (sensitivity 78.3% and specificity 75.9%). BD-based classification was comparable to ATLS classification in predicting mortality and determining transfusion requirements. Patients with higher arterial lactate and BD were found to have higher 24 h Intensive Care Unit (ICU) admission. Conclusion: Emergency admission arterial lactate and Base Deficit are useful predictors of mortality, need for blood transfusion and ICU admission at 24 h. It can be used to triage, identify shock early, assess transfusion requirement, and prognosticate trauma patients.






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