脳血管攣縮に対する血管内治療

Endovascular Treatment of Delayed Cerebral Vasospasms

Point

・遅発性脳血管攣縮に対する救済治療（レスキューセラピー）として，血管内治療が広く行われている．

・高い有効性と安全性を有すると考えられるが，エビデンスレベルの高い研究は少ない．

・血管拡張薬の動注治療と経皮的血管形成術が血管内治療によるレスキューセラピーの主な方法である．

・両治療の特性・利点・欠点を十分に理解し，症例ごとに適切に対応することが重要である．

　Delayed cerebral vasospasm is a major complication following subarachnoid hemorrhage and a primary cause of delayed cerebral ischemia. While various preventive treatments exist, some patients still develop severe vasospasm, highlighting the need for better rescue therapies. This article explores endovascular treatment as a rescue option for vasospasm, focusing on the clinical characteristics and roles of intra-arterial vasodilator injection therapy and percutaneous transluminal angioplasty（PTA）.

　Despite a lack of strong evidence from large clinical trials, advancements in endovascular technology have positioned both intra-arterial vasodilator injection therapy and PTA as promising and safe rescue options for severe vasospasm. Careful selection of the appropriate approach is crucial for achieving optimal clinical outcomes, considering the unique characteristics, advantages, and limitations of each method. Further clinical trials are necessary to definitively confirm this hypothesis.