Aneurysm rebleeding before therapy: a predictable disaster?

Area of Science:

• Neurosurgery
• Neurology
• Radiology

Background:

• Subarachnoid hemorrhage (SAH) management guidelines emphasize early aneurysm treatment within 72 hours.
• Aneurysm rebleeding is a significant complication following SAH, necessitating effective risk assessment.
• Identifying patients at high risk for rebleeding is crucial for timely intervention.

Purpose of the Study:

• To identify independent predictors of aneurysm rebleeding in SAH patients.
• To develop a risk score for early stratification of SAH patients based on rebleeding risk.
• To improve patient outcomes by enabling prompt aneurysm occlusion in high-risk individuals.

Main Methods:

• Retrospective study of 984 patients admitted with ruptured aneurysms over 14 years.
• Evaluation of demographic, radiographic, medical history, and baseline parameters.
• Univariate and multivariate analyses to identify independent predictors of rebleeding, leading to a novel risk score.

Main Results:

• Aneurysm rebleeding occurred in 5.9% of cases, with 82.8% re-rupturing within 24 hours.
• Independent predictors of rebleeding included hypertension, basilar artery aneurysm location, sac size ≥ 9 mm, intracerebral hemorrhage, and acute hydrocephalus.
• The developed risk score demonstrated good diagnostic accuracy (AUC 0.780) for predicting rebleeding.

Conclusions:

• Specific patient, aneurysm, and SAH characteristics reliably predict aneurysm rerupture.
• A novel risk score incorporating these parameters can aid in identifying SAH patients who would benefit from immediate aneurysm occlusion.
• Early risk stratification is key to optimizing treatment strategies and reducing rebleeding complications in SAH.