Cardiac arrest & resuscitation

Regional Brain Net Water Uptake in Computed Tomography after Cardiac Arrest – A Novel Biomarker for Neuroprognostication

ResuscitationPublished Diagnostic accuracy study

Authors' conclusion

This pilot study indicates that NWU derived from serial head CTs is a promising novel biomarker for outcome prediction after CA. NWU >8% in basal ganglia grey matter regions predicted poor outcome while absence of NWU indicated good outcome.

Study context

Population
Patients after OHCA or in-hospital cardiac arrest81 derivation, 34 validation
Participants
115 patients
Outcome
Poor neurological outcome:
  • CPC in derivation
  • Modified Rankin Scale (mRS) in validation cohort
Methodological detailsobservational prognostic accuracy study, derivation (single-centre registry) and validation (international multicentre TTM2 trial) cohorts, pilot study
  • Observational prognostic accuracy study
  • Derivation (single-centre registry) and validation (international multicentre TTM2 trial) cohorts
  • Pilot study

Performance

As reported in the abstract

Prediction of poor outcome
Test or modelSpecificitySensitivity
Net water uptake (NWU) >8% in putamen and caudate nucleus100% (95%-CI: 86-100%)43% (95%-CI: 31-56%)

Net water uptake (NWU) >8% in putamen and caudate nucleus

Specificity100% (95%-CI: 86-100%)
Sensitivity43% (95%-CI: 31-56%)

Original publication

Regional Brain Net Water Uptake in Computed Tomography after Cardiac Arrest – A Novel Biomarker for Neuroprognostication. Resuscitation. Published 23 May 2024. doi:10.1016/j.resuscitation.2024.110243

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