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VOLUME 23 , ISSUE 7 ( July, 2019 ) > List of Articles

Original Article

Prognostic Value of High-sensitivity Troponin I in Patients with Septic Shock: A Prospective Observational Study

Ali Jendoubi, Salma Jerbi, Elaa Maamar, Ahmed Abbess, Zied Samoud, Lamia Kanzari, Ilhem Boutiba, Salma Ghedira, Mohamed Houissa

Keywords : High-sensitivity cardiac troponin, Mortality, Prognosis, Septic shock

Citation Information : Jendoubi A, Jerbi S, Maamar E, Abbess A, Samoud Z, Kanzari L, Boutiba I, Ghedira S, Houissa M. Prognostic Value of High-sensitivity Troponin I in Patients with Septic Shock: A Prospective Observational Study. Indian J Crit Care Med 2019; 23 (7):320-325.

DOI: 10.5005/jp-journals-10071-23206

License: CC BY-NC 4.0

Published Online: 01-07-2019

Copyright Statement:  Copyright © 2019; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Background: Myocardial dysfunction is one of the mechanisms involved in the pathophysiology of septic shock. The role of troponin as a surrogate of myocardial injury in septic shock is still debated. The aim of this study was to assess the prognostic value of high-sensitivity cardiac troponin I (hs-cTnI) assay in predicting 28-day mortality in patients with septic shock. Materials and Methods: Prospective study including 75 patients with septic shock admitted to a medico-surgical ICU from January to December 2017. Patients under the age of 18 years, known pregnancy and patients in post–cardiac arrest were excluded. Clinical and demographic data including age, gender, comorbidities, SAPS II and SOFA scores were collected. Hs-cTnI was measured soon after admission and 12, 24, 48 and 72 after. Receiver operating characteristic (ROC) analysis was performed to identify the most useful troponin I cut-off level for the prediction of 28-day mortality. A p <0.05 was considered significant. Results: Seventy-five (M/F = 53/22) patients with septic shock were included in the study. The median SOFA and SAPS II scores were 10 and 42, respectively. The median duration of mechanical ventilation was 8 days and the median length of ICU stay was 11 days. The 28-day mortality was 54.6%. We found a high prevalence (47%) of elevated hs-cTnI in patients with septic shock. Median hs-cTnI on admission in the whole group was 36 ng/L. The 28-day mortality was found to be related to age (p <0.001), SAPS II score (p = 0.001), mean arterial pressure (p = 0.038), lactate (p <0.001) and glomerular filtration rate (p <0.001). Hs-cTnI levels were significantly higher in non-survival group than survival one at all time points: H12 (p = 0.006), H24 (p = 0.003), H48 (p = 0.005) and H72 (p=0.001). In multivariate analysis, hs-cTnI at H72 was independently associated with 28-day mortality. Conclusion: Hs-cTnI elevation at 72 hours was associated with 28-day mortality in septic shock patients.


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