[Spontaneous subarachnoid hemorrhage. Plea for a standard evaluation system]

Area of Science:

• Neurosurgery
• Neurology
• Clinical Evaluation

Context:

• Subarachnoid hemorrhage (SAH) grading lacks standardization.
• Multiple grading systems (Botterell's, Hunt's, Hess's, Nischioka's) are in use.
• Surgical teams often employ modified or derived grading systems.

Purpose:

• To address the lack of a univocal grading system for SAH from ruptured intracranial aneurysms.
• To propose a novel, unified grading system for clinical evaluation.

Summary:

• Current subarachnoid hemorrhage grading systems are inconsistent, hindering patient data comparison.
• Existing methods include Botterell's, Hunt's and Hess's, and Nischioka's scales.
• A new, unified grading system with novel clinical evaluation criteria is proposed.

Impact:

• Facilitate consistent patient cohort comparison in research.
• Enhance the reliability of clinical outcome studies.
• Standardize SAH patient assessment globally.