• Tatiana H Rech, Silvia Regina Rios Vieira, and Janete Salles Brauner.
• Serviço de Medicina Intensiva, Hospital de Clínicas de Porto Alegre.
• Rev Bras Ter Intensiva. 2006 Dec 1;18(4):396-401.

Background And ObjectivesCardiac arrest is a state of severe cerebral perfusion deficit. Patients recovering from a cardiopulmonary resuscitation are at great risk of subsequent death or incapacitating neurologic injury, including persistent vegetative state. The early definition of prognosis for these patients has ethical and economic implications. The main purpose of this manuscript was to review the prognostic value of serum Neuron-Specific Enolase (NSE) in predicting outcomes in patients early after a cardiac arrest.ContentsSevere neurologic disability is the most feared complication after a cardiac arrest. Many studies are trying to find prognostic markers that can be associated with outcomes in patients surviving a cardiac arrest. Biochemical markers of neuronal injury seem to be promising in this scenario. Therefore, NSE levels have been studied in patients after a cardiac arrest and high enzyme levels suggest more extensive brain damage and are associated with unfavorable clinical outcomes.ConclusionsOutcome after a cardiac arrest is mostly determined by the degree of hypoxic brain damage and early determinations of serum NSE level can be a valuable ancillary method for assessing outcome in these patients.

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