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J Trauma Inj : Journal of Trauma and Injury



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Outcomes and physiologic responses associated with ketamine administration after traumatic brain injury in the United States and Canada: a retrospective analysis
Austin J. Peters, Saad A. Khan, Seiji Koike, Susan Rowell, Martin Schreiber
J Trauma Inj. 2023;36(4):354-361.   Published online November 7, 2023
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  • 33 Download
AbstractAbstract PDFSupplementary Material
Ketamine has historically been contraindicated in traumatic brain injury (TBI) due to concern for raising intracranial pressure. However, it is increasingly being used in TBI due to the favorable respiratory and hemodynamic properties. To date, no studies have evaluated whether ketamine administered in subjects with TBI is associated with patient survival or disability.
We performed a retrospective analysis of data from the multicenter Prehospital Tranexamic Acid Use for Traumatic Brain Injury trial, comparing ketamine-exposed and ketamine-unexposed TBI subjects to determine whether an association exists between ketamine administration and mortality, as well as secondary outcome measures.
We analyzed 841 eligible subjects from the original study, of which 131 (15.5%) received ketamine. Ketamine-exposed subjects were younger (37.3±16.9 years vs. 42.0±18.6 years, P=0.037), had a worse initial Glasgow Coma Scale score (7±3 vs. 8±4, P=0.003), and were more likely to be intubated than ketamine-unexposed subjects (88.5% vs. 44.2%, P<0.001). Overall, there was no difference in mortality (12.2% vs. 15.5%, P=0.391) or disability measures between groups. Ketamine-exposed subjects had significantly fewer instances of elevated intracranial pressure (ICP) compared to ketamine-unexposed subjects (56.3% vs. 82.3%, P=0.048). In the very rare outcomes of cardiac events and seizure activity, seizure activity was statistically more likely in ketamine-exposed subjects (3.1% vs. 1.0%, P=0.010). In the intracranial hemorrhage subgroup, cardiac events were more likely in ketamine-exposed subjects (2.3% vs. 0.2%, P=0.025). Ketamine exposure was associated with a smaller increase in TBI protein biomarker concentrations.
Ketamine administration was not associated with worse survival or disability despite being administered to more severely injured subjects. Ketamine exposure was associated with reduced elevations of ICP, more instances of seizure activity, and lower concentrations of TBI protein biomarkers.
Usefulness of Shock Index to Predict Outcomes of Trauma Patient: A Retrospective Cohort Study
Myoung Jun Kim, Jung Yun Park, Mi Kyoung Kim, Jae Gil Lee
J Trauma Inj. 2019;32(1):17-25.   Published online March 31, 2019
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  • 167 Download
  • 6 Citations
AbstractAbstract PDF

We investigated how prehospital, emergency room (ER), and delta shock indices (SI) correlate with outcomes including mortality in patients with polytrauma.


We retrospectively reviewed the medical records of 1,275 patients who visited the emergency department from January 2015 to April 2018. A total of 628 patients were enrolled in the study. Patients were divided into survivor and non-survivor groups, and logistic regression analysis was used to investigate independent risk factors for death. Pearson coefficient analysis and chi-square test were used to examine the significant relationship between SI and clinical progression markers.


Of 628 enrolled patients, 608 survived and 27 died. Multivariate logistic regression analysis reveals “age” (p<0.001; OR, 1.068), “pre-hospital SI >0.9” (p<0.001; OR, 11.629), and “delta SI ≥0.3” (p<0.001; OR, 12.869) as independent risk factors for mortality. Prehospital and ER SIs showed a significant correlation with hospital and intensive care unit length of stay and transfusion amount. Higher prehospital and ER SIs (>0.9) were associated with poor clinical progression.


SI and delta SI are significant predictors of mortality in patients with polytrauma. Moreover, both prehospital and ER SIs can be used as predictive markers of clinical progression in these patients.



Citations to this article as recorded by  
  • Shock Index for the Prediction of Interventions and Mortality in Patients With Blunt Thoracic Trauma
    Mohammad Asim, Ayman El-Menyar, Talat Chughtai, Ammar Al-Hassani, Husham Abdelrahman, Sandro Rizoli, Hassan Al-Thani
    Journal of Surgical Research.2023; 283: 438.     CrossRef
  • Emergency Department Shock Index Outperforms Prehospital and Delta Shock Indices in Predicting Outcomes of Trauma Patients
    Hamidreza Hosseinpour, Tanya Anand, Sai Krishna Bhogadi, Christina Colosimo, Khaled El-Qawaqzeh, Audrey L. Spencer, Lourdes Castanon, Michael Ditillo, Louis J. Magnotti, Bellal Joseph
    Journal of Surgical Research.2023; 291: 204.     CrossRef
  • Shock index as a predictor for mortality in trauma patients: a systematic review and meta-analysis
    Malene Vang, Maria Østberg, Jacob Steinmetz, Lars S. Rasmussen
    European Journal of Trauma and Emergency Surgery.2022; 48(4): 2559.     CrossRef
  • Delta Shock Index Predicts Outcomes in Pediatric Trauma Patients Regardless of Age
    Samer Asmar, Muhammad Zeeshan, Muhammad Khurrum, Jorge Con, Mohamad Chehab, Letitia Bible, Rifat Latifi, Bellal Joseph
    Journal of Surgical Research.2021; 259: 182.     CrossRef
  • Shock index as a predictor for short‐term mortality in helicopter emergency medical services: A registry study
    Johannes Björkman, Lasse Raatiniemi, Piritta Setälä, Jouni Nurmi
    Acta Anaesthesiologica Scandinavica.2021; 65(6): 816.     CrossRef
  • Association between prehospital field to emergency department delta shock index and in-hospital mortality in patients with torso and extremity trauma: A multinational, observational study
    Dae Kon Kim, Joo Jeong, Sang Do Shin, Kyoung Jun Song, Ki Jeong Hong, Young Sun Ro, Tae Han Kim, Sabariah Faizah Jamaluddin, Zsolt J. Balogh
    PLOS ONE.2021; 16(10): e0258811.     CrossRef

J Trauma Inj : Journal of Trauma and Injury