How does WFNS differ from Hunt-Hess grading?

WFNS uses GCS as its primary variable (more objective), while Hunt-Hess uses clinical descriptors. Both predict outcome, but WFNS has better interobserver reliability due to GCS standardization.

What outcomes correlate with WFNS grade?

Grade I-II have favorable outcomes in 70-80% of cases. Grade IV-V (poor-grade SAH) have mortality above 50% and favorable outcome in only 20-40%, even with aggressive treatment.

When should WFNS grade be assessed?

WFNS grade should be assessed after initial resuscitation and treatment of hydrocephalus (EVD placement), not at initial presentation when depressed consciousness may be reversible.

WFNS Subarachnoid Hemorrhage Grade

Grade subarachnoid hemorrhage severity using the World Federation of Neurological Surgeons (WFNS) scale. Grade I: GCS 15, no motor deficit. Grade II: GCS 13-14, no motor deficit. Grade III: GCS 13-14 with motor deficit. Grade IV: GCS 7-12. Grade V: GCS 3-6. Predicts surgical risk and outcome.

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Frequently Asked Questions

How does WFNS differ from Hunt-Hess grading?

What outcomes correlate with WFNS grade?

When should WFNS grade be assessed?