title: [Serum neuron-specific enolase as a prognostic marker after a cardiac arrest].
abstract: OBJECTIVE
  Cardiac 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.
  
  
  BACKGROUND
  Severe 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.
  
  
  CONCLUSIONS
  Outcome 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.
authors.affiliation: Serviço de Medicina Intensiva, Hospital de Clínicas de Porto Alegre.
authors.forename: Tatiana H
authors.initials: TH
authors.lastname: Rech
authors.affiliation: Serviço de Medicina Intensiva, Hospital de Clínicas de Porto Alegre.
authors.forename: Silvia Regina Rios
authors.initials: SR
authors.lastname: Vieira
authors.affiliation: Serviço de Medicina Intensiva, Hospital de Clínicas de Porto Alegre.
authors.forename: Janete Salles
authors.initials: JS
authors.lastname: Brauner