Usefulness of early plasma S-100B protein and Neuron-Specific Enolase measurements to identify cerebrovascular etiology of out-of-hospital cardiac arrest

Resuscitation. 2018 Sep:130:61-66. doi: 10.1016/j.resuscitation.2018.07.004. Epub 2018 Jul 5.

Abstract

Background: While S-100B protein and Neuron-Specific Enolase (NSE) dosages have been extensively investigated for neurological prognostication after cardiac arrest (CA), there is no data about their ability to detect a cerebrovascular cause of CA. We assessed the utility of plasma S-100B protein and NSE measurements for early diagnosis of primary neurological cause in resuscitated CA patients.

Patients and methods: Case control study based on two prospectively acquired CA databases. Patients with a primary cerebrovascular etiology were compared with randomly selected CA of non-neurological cause. S-100B protein and NSE were measured at ICU admission in all patients.

Results: CA was due to a cerebrovascular etiology in 18 patients (subarachnoid hemorrhage, n = 15; ischemic stroke, n = 3), with an ICU mortality of 100%. Comparative group was constituted with 66 patients (cardiac etiology n = 45, respiratory etiology n = 21), with an ICU mortality of 71%. Admission S-100B protein concentration was 2.0 [0.63-7.15] μg/L in the cerebrovascular group and 0.45 [0.24-1.95] in the non-cerebrovascular group (p < 0.001). In contrast, NSE concentration was similar in cerebrovascular and non-cerebrovascular etiologies (35 [25-103] μg/L vs. 27 [19-47] respectively, p = 0.16). Area under ROC curves for S-100B protein and NSE to predict cerebrovascular cause of CA was 0.75 [95% CI: 0.64-0.87] and 0.61 [95% CI: 0.45-0.76], respectively.

Conclusions: Even if S-100B protein dosage performs slightly better than NSE, early dosages of these biomarkers are poorly predictive of a cerebrovascular etiology of CA. Our results suggest that early measurement of brain biomarkers should not be recommended to tailor the imaging strategy employed to investigate the CA cause.

Keywords: Biomarker; Cardiac arrest; Etiology; Neuron-Specific Enolase; Outcome; S-100B protein; Stroke.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Biomarkers / blood
  • Case-Control Studies
  • Early Diagnosis
  • Female
  • France / epidemiology
  • Humans
  • Male
  • Middle Aged
  • Out-of-Hospital Cardiac Arrest* / etiology
  • Out-of-Hospital Cardiac Arrest* / mortality
  • Out-of-Hospital Cardiac Arrest* / therapy
  • Phosphopyruvate Hydratase / blood*
  • Predictive Value of Tests
  • Prognosis
  • ROC Curve
  • S100 Calcium Binding Protein beta Subunit / blood*
  • Stroke* / blood
  • Stroke* / complications
  • Stroke* / diagnosis

Substances

  • Biomarkers
  • S100 Calcium Binding Protein beta Subunit
  • Phosphopyruvate Hydratase