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Circulating cardiac troponin I in trauma patients without cardiac contusion

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Abstract

Objectives: To describe the evolution and the diagnostic value of cardiac troponin I (cTnI) and to relate its concentrations with the indicators of injury in trauma patients.

Design: Prospective, observational study of 17 young, previously healthy, mechanically-ventilated patients during the early post-traumatic period in the Surgical ICU of a University Hospital.

Methods: Serial measurements of serum cTnI, total creatine kinase activity (CKtot) and its isoenzyme MB (CK-MB) (on admission, 12 h later, then daily for 7 days), clinical data and repeated electrocardiographic (ECG) and transesophageal echocardiography (TEE) recordings.

Results: Rhabdomyolysis was observed in all the patients with a significant relationship between CK-MB and CKtot. Despite the fact that no patient demonstrated ECG or TEE signs of myocardial contusion, elevated serum levels of cTnI were observed in six patients (35%) without obvious dilutional interference. As compared with the others, these patients exhibited a more frequent arterial hypotension (83% vs 18%, p=0.035), required greater volume expansion on day 1 (22,000 vs 8,500 ml, p=0.027) and usually demonstrated early (83% vs 9%, p=0.005) and late (66% vs 9%, p=0.028) multiple organ dysfunction syndrome.

Conclusions: Taking into account the high reported sensitivity and specificity of cTnI dosage, the present results suggest cTnI can play a role in the evaluation of indirect myocardial injury following traumatic shock.

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Correspondence to A. R. Edouard.

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Edouard, A.R., Benoist, J.F., Cosson, C. et al. Circulating cardiac troponin I in trauma patients without cardiac contusion. Intensive Care Med 24, 569–573 (1998). https://doi.org/10.1007/s001340050617

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  • DOI: https://doi.org/10.1007/s001340050617

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