Prognostic role of copeptin after traumatic brain injury: A systematic review and meta-analysis of observational studies

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Abstract

Purpose:

Copeptin, the C-terminal portion of provasopressin, has emerged as a novel prognostic marker in neurocritical care, such as in traumatic brain injury (TBI). The aim of this study was to quantitatively assess the prognostic significance of initial plasma copeptin levels in the neurological outcome and mortality after traumatic brain injury.

Materials and methods:

Six relevant studies with data from 552 patients were included in this meta-analysis.

Results:

The plasma copeptin levels were found to be significantly higher in patients who died than in the survivors (standardized mean difference [SMD], 1.80). In the four studies reporting Glasgow outcome scale (GOS) data, patients with unfavorable outcomes had significantly higher copeptin levels than those with favorable outcomes (SMD, 1.62). The plasma copeptin level predicted mortality and unfavorable outcomes (AUC, 0.873; AUC, 0.876).

Conclusions:

The present meta-analysis suggests that early measurement of plasma copeptin levels can provide better prognostic information about the functional outcome and mortality in patients with TBI.

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