Comparison Between High-density Electroencephalography and Conventional Electroencephalography for Comatose Patients

Comparison Between High-density Electroencephalography and Conventional Electroencephalography to Diagnose the Presence of Consciousness in Post-anoxic Comatose Patients

The purpose of this study is to measure whether high-density electroencephalography can improve the detection of electrophysiological signs of awareness compared to conventional electroencephalography in post-anoxic comatose patients

Inclusion Criteria:

• post anoxic coma
• over 18 years old
• agreement from families
• alive 4 days after the beginning of coma

Exclusion Criteria:

• traumatic coma
• non-traumatic but not anoxic coma
• patients with severe comorbidity previous to coma
• refusal of families to participate to the study
• contraindication to a high-density electroencephalography exam