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Women critically ill adults on EEG have higher intracranial hemorrhage and seizure discharge rates than menTrial finds women with impaired consciousness have different outcomes

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Key Takeaway
Note higher hemorrhage and seizure discharge rates in women critically ill adults on EEG.

This post hoc analysis of a multicenter randomized trial evaluated sex differences in outcomes among critically ill adults requiring electroencephalography. The study population included 364 patients. The intervention or exposure was sex, comparing women versus men. The comparator group consisted of men. Follow-up duration was 6.0 months.

Women had a higher prevalence of intracranial hemorrhage at 30.9% compared to 19.5% in men, with a p-value of 0.015. The prevalence of epileptiform electroencephalography discharges was also higher in women at 27.6% versus 21.2% in men, with a p-value of 0.008. Use of sedation, antiseizure medication, and mechanical ventilation was similar between sexes. Mortality was similar between groups with an adjusted OR of 0.70 for women (95% CI, 0.39-1.28). Women were less likely to reach a favorable functional outcome (CPC 1-2) with an adjusted OR of 0.50 (95% CI, 0.28-0.90).

Safety data regarding adverse events, serious adverse events, discontinuations, and tolerability were not reported. The study limitations note that findings warrant further investigation to identify modifiable factors. Causality was not distinguished in this observational analysis of trial data.

This study looked at critically ill adults with impaired consciousness who needed brain wave monitoring. It included 364 patients across multiple hospitals and followed them for six months. The researchers compared outcomes between women and men.

Women had a higher prevalence of intracranial hemorrhage and epileptiform discharges on their EEG. The use of sedation, antiseizure medication, and mechanical ventilation was similar between sexes. Mortality was also similar, but women were less likely to have a favorable functional outcome.

The study does not report specific safety concerns. The main reason to be careful is that this is a post hoc analysis of a trial, so the findings warrant further investigation to identify modifiable factors. The results show an association, not a cause.

Readers should understand this is an early finding from a specific group of critically ill patients. It suggests sex may be linked to certain outcomes, but more research is needed before any changes in care.

What this means for you:
Women with impaired consciousness may have different brain and outcome patterns, but more research is needed.

Study Details

Study typeRct
EvidenceLevel 2
Follow-up6.0 mo
PublishedJun 2026
View Original Abstract ↓
BACKGROUND: Sex-related discrepancies concerning the treatment of patients in intensive care are increasingly described. However, information about management and outcome of critically ill patients undergoing electroencephalography is scarce. OBJECTIVES: This study explores sex-related disparities in management and clinical outcomes in critically ill patients needing electroencephalography for clinical purposes. DESIGN, SETTING, PATIENTS, AND INTERVENTIONS: In this post hoc analysis of the multicenter Continuous Electroencephalography Randomized Trial in Adults (CERTA), which included patients with impaired consciousness requiring electroencephalography, we explored correlations between sex and the timing of electroencephalography, detection of electroencephalography abnormalities, mechanical ventilation, sedation, antiseizure therapy, mortality, and favorable functional outcome (Cerebral Performance Category [CPC] 1-2) at 6 months, using univariable and multivariable analyses. MEASUREMENTS AND MAIN RESULTS: Among 364 patients (33.8% women), women showed a higher prevalence of intracranial hemorrhage (women 30.9%, men 19.5%; p = 0.015) and epileptiform electroencephalography discharges (women 27.6%, men 21.2%; p = 0.008), but use of sedation, antiseizure medication and mechanical ventilation was similar between sexes. Although mortality was similar (adjusted odds ratio [OR], 0.70; 95% CI, 0.39-1.28), women were less likely to reach CPC 1-2 (adjusted OR, 0.50; 95% CI, 0.28-0.90). CONCLUSIONS: Critically ill women and men requiring electroencephalography appear to receive similar clinical management and have comparable mortality, although long-term functional outcome in surviving women is worse. These findings warrant further investigation to identify modifiable factors contributing to sex-related outcome differences.
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