Epidemiology-based mortality score in status epilepticus (EMSE)

Area of Science:

• Neurology
• Critical Care Medicine
• Epidemiology

Background:

• Status epilepticus (SE) is a critical neurological condition with significant mortality and poor functional outcomes.
• Current outcome prediction relies on the Status Epilepticus Severity Score (STESS), based on limited parameters and a priori assumptions.
• There is a need for improved risk stratification tools in SE management.

Purpose of the Study:

• To develop and validate a novel scoring system, the Epidemiology-based Mortality score in SE (EMSE), for predicting individual mortality in SE patients.
• To compare the performance of EMSE against the existing STESS score.

Main Methods:

• Retrospective analysis of 92 consecutive non-hypoxic SE patients treated in a neurological intensive care unit.
• Development of EMSE by combining epidemiological data (aetiology, age, comorbidity, EEG, duration, level of consciousness) and mortality rates.
• Comparison of EMSE's predictive values (NPV, PPV, correctly classified) with STESS (STESS-3, STESS-4).

Main Results:

• EMSE, utilizing aetiology, age, comorbidity, and EEG, achieved 100% negative predictive value (NPV), 68.8% positive predictive value (PPV), and 89.1% correctly classified rate.
• EMSE demonstrated statistically significant superiority over STESS-3 and STESS-4 (p ≤ 0.0022).

Conclusions:

• EMSE effectively predicts individual mortality in SE patients, explaining nearly 90% of cases.
• The developed EMSE score shows superior performance to existing prediction tools.
• Further external prospective validation is required, but EMSE holds promise for risk stratification in future SE interventional studies.