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  • Title: Cerebrospinal fluid lactate dehydrogenase as a potential predictor of neurologic outcomes in cardiac arrest survivors who underwent target temperature management.
    Author: Park JS, You Y, Ahn HJ, Min JH, Jeong W, Yoo I, Cho Y, Ryu S, Lee J, Kim S, Cho SU, Oh SK, Kang CS, Lee BK.
    Journal: J Crit Care; 2020 Jun; 57():49-54. PubMed ID: 32062287.
    Abstract:
    PURPOSE: Cerebrospinal fluid (CSF) lactate dehydrogenase (LDH) levels increase in patients with brain injury. We investigated neurologic outcomes associated with CSF LDH levels in out-of-hospital cardiac arrest (OHCA) survivors who underwent target temperature management (TTM). MATERIALS AND METHODS: This was a prospective single-centre observational study from April 2018 to May 2019 on a cohort of 41 patients. CSF and serum LDH samples were obtained immediately (LDH0) and at 24 (LDH24), 48 (LDH48), and 72 h (LDH72) after return of spontaneous circulation (ROSC). Neurologic outcomes were assessed at 3 months after ROSC using the Cerebral Performance Category scale. RESULTS: Twenty-one patients had a poor neurologic outcome. CSF LDH levels were significantly higher in the poor neurologic outcome group at each time point. The area under the curve (AUC) of CSF LDH48 was 0.941 (95% confidence interval [CI], 0.806-0.992). With a cut off value of 250 U/L, CSF LDH48 had a high sensitivity (94.1%; 95% CI, 71.3-99.9) at 100% specificity. CONCLUSIONS: CSF LDH level at 48 h was a highly specific and sensitive marker for 3-month poor neurologic outcome. This may constitute a useful predictive marker for neurologic outcome in OHCA survivors treated with TTM.
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