Abstract
Background
Two-tier trauma team activation (TTA)—protocols often fail to safely identify severely injured patients. A possible amendment to existing triage scores could be the measurement of serum lactate. The aim of this study was to determine the ability of the combination of serum lactate and age to predict severe injuries (ISS > 15).
Methods
We conducted a retrospective cohort study in a single level one trauma center in a 20 months study-period and analyzed every trauma team activation (TTA) due to the mechanism of injury (MOI). Primary endpoint was the correlation between serum lactate (and age) and ISS and mortality. The validity of lactate (LAC) and lactate contingent on age (LAC + AGE) were assessed using the area under the curve (AUC) of the receiver operating characteristics (ROC) curve. We used a logistic regression model to predict the probability of an ISS > 15.
Results
During the study period we included 325 patients, 75 met exclusion criteria. Mean age was 43 years (Min.: 11, Max.: 90, SD: 18.7) with a mean ISS of 8.4 (SD: 8.99). LAC showed a sensitivity of 0.82 with a specificity of 0.62 with an optimal cutoff at 1.72 mmol/l to predict an ISS > 15. The AUC of the ROC for LAC was 0.764 (95% CI: 0.67–0.85). The LAC + AGE model provided a significantly improved predictive value compared to LAC (0.765 vs. 0.828, p < 0.001).
Conclusions
The serum lactate concentration is able to predict injury severity. The prognostic value improves significantly taking the patients age into consideration. The combination of serum lactate and age could be a suitable Ad-on to existing two-tier triage protocols to minimize undertriage.
Level of evidence: Level IV, retrospective cohort study.
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Availability of data and materials
The data set generated and analyzed during the current study is not publicly accessible but is available from the corresponding author on reasonable request.
Code availability
Not applicable.
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PH (BG Unfallklinik Frankfurt am Main—Department of Trauma and Orthopedic Surgery) is the corresponding author. PF (BG Unfallklinik Frankfurt am Main—Department of Trauma and Orthopedic Surgery) made substantial contributions to the conception, the design of the work, the acquisition, the analysis and interpretation of data and was a major contributor in writing the manuscript. CR (University Medical Center Mainz—Interdisciplinary Center Clinical Trials (IZKS)) made substantial contributions to the conception and the analysis and interpretation of data. PS (Hospital of the Goethe University Frankfurt /Main, Department of Trauma, Hand and Reconstructive Surgery) made substantial contributions to the conception and design of the work and substantively revised it. IM (Hospital of the Goethe University Frankfurt/Main, Department of Trauma, Hand and Reconstructive Surgery) made substantial contributions to the conception and design of the work and substantively revised it. RH (BG Unfallklinik Frankfurt am Main—Department of Trauma and Orthopedic Surgery) made substantial contributions to the conception and design of the work and substantively revised it. US (BG Unfallklinik Frankfurt am Main—Department of Trauma and Orthopedic Surgery) made substantial contributions to the conception, the design of the work, the acquisition, the analysis and interpretation of data and substantively revised it. YG (BG Unfallklinik Frankfurt am Main—Department of Trauma and Orthopedic Surgery) made substantial contributions to the conception, the design of the work, the acquisition, the analysis and interpretation of data and substantively revised it. All authors read and approved the final manuscript.
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The authors listed below declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Corresponding author Dr. Paul Hagebusch, MD. BG Unfallklinik Frankfurt am Main, Department of Trauma and Orthopedic Surgery. Dr. Philipp Faul, MD, BG Unfallklinik Frankfurt am Main, Department of Trauma and Orthopedic Surgery. Dr. Christian Ruckes, University Medical Center Mainz, Interdisciplinary Center Clinical Trials (IZKS). PD Dr. Philipp Störmann, MD, Hospital of the Goethe University Frankfurt/Main, Department of Trauma, Hand and Reconstructive Surgery. Prof. Dr. Ingo Marzi, MD, PhD, Hospital of the Goethe University Frankfurt/Main, Department of Trauma, Hand and Reconstructive Surgery. Prof. Dr. Dr. Reinhard Hoffmann, MD, PhD, BG Unfallklinik Frankfurt am Main, Department of Trauma and Orthopedic Surgery. PD Dr. Uwe Schweigkofler, MD, PhD, BG Unfallklinik Frankfurt am Main, Department of Trauma and Orthopedic Surgery. PD Dr. Yves Gramlich, MD, PhD, BG Unfallklinik Frankfurt am Main, Department of Trauma and Orthopedic Surgery.
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Hagebusch, P., Faul, P., Ruckes, C. et al. The predictive value of serum lactate to forecast injury severity in trauma-patients increases taking age into account. Eur J Trauma Emerg Surg (2022). https://doi.org/10.1007/s00068-022-02046-2
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DOI: https://doi.org/10.1007/s00068-022-02046-2