Direct versus indirect revascularization procedures for moyamoya disease: a comparative effectiveness study.

Area of Science:

• Neurosurgery
• Cerebrovascular Medicine
• Medical Decision Analysis

Background:

• Moyamoya disease (MMD) is a progressive cerebrovascular disorder.
• Surgical revascularization is the primary treatment for MMD.
• The optimal surgical strategy for MMD remains undetermined.

Purpose of the Study:

• To compare the effectiveness of direct, indirect, and combined revascularization procedures for Moyamoya disease.
• To evaluate surgical outcomes in both adult and pediatric MMD populations.

Main Methods:

• A decision analysis model was constructed using data from 33 studies (4197 cases).
• Complication and success rates were extracted from existing literature.
• Utility values and sensitivity analyses were performed to assess outcomes.

Main Results:

• In pediatric patients, indirect and combined procedures were superior to direct revascularization at 5- and 10-year follow-ups.
• In adult patients, indirect revascularization outperformed direct revascularization at 4-year follow-up.
• Direct revascularization was found to be inferior in quality-adjusted life years for both age groups.

Conclusions:

• Indirect and combined revascularization techniques appear to be more effective for MMD treatment than direct procedures.
• These findings suggest that indirect or combined approaches may provide optimal long-term results for Moyamoya disease patients.
• Direct revascularization is statistically inferior in terms of long-term quality-adjusted life years.