Initial evaluation of Antithrombin concentration changes and predictive value for pneumonia complications in inhalation injury patients
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Abstract
Objective: Evaluate the concentration and prognostic value of antithrombin III (AT III) in serum and bronchoalveolar lavage fluid (BALF) for pneumonia complications in inhalation injury patients.
Subjects and methods: A retrospective descriptive study on 20 inhalation injury burn patients hospitalized from January 2023 to December 2023. AT III levels were quantified by ELISA at two time points: On admission and day 7 after burn. ROC curve analysis, Kaplan-Meier survival analysis and other statistical methods were used to evaluate the prognostic value of AT III.
Results: Serum AT III levels decreased significantly from day 1 (761.6 ng/mL) to day 7 (427.5 ng/ml) after burn injury (p = 0.019), while there was no significant change in AT III levels in BALF. Serum AT III levels on admission were predictive of pneumonia complications (AUC = 0.7187; p = 0.002), with an optimal cut-off value of 534.52 ng/mL, 100% sensitivity and 50% specificity. Kaplan-Meier analysis of time to pneumonia did not show a statistically significant difference between the two patient groups with AT III levels higher and lower than the predictive concentration (p = 0.3217).
Conclusion: Serum AT III levels decreased, while AT III levels in bronchoalveolar lavage fluid did not change significantly in inhalation injury burn patients. Serum AT III levels have prognostic value for pneumonia complications. Preliminary results suggest that AT III is a potential biomarker for the prognosis and treatment of pneumonia in inhalation injury patients.
Article Details
Keywords
Antithrombin III, inhalation injury, pneumonia
References
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