Key result
The PLAN A blocks approach standardizes regional anesthesia into seven fundamental techniques, offering a practical solution to complexity bias by prioritizing widespread applicability and safety.
Why the study?
The rapid proliferation of regional anesthesia and nerve block techniques created complexity bias, prompting the need to review the historical development and standardized approaches such as PLAN A blocks.
Standardization of regional anesthesia through PLAN A blocks addresses complexity bias and improves educational efficiency for non-specialists.
May streamline regional anesthesia training for non-specialists; leaves open prospective outcome validation.
区域麻酔は19世紀後半のコカイン発見以降発展し，特に超音波ガイド下区域麻酔 (UGRA) により手術麻酔および術後鎮痛の質が向上した．しかし，神経ブロック手技の急増は複雑性バイアスを生じさせた．本総説では，区域麻酔の歴史的発展を概観し，Turbittらが2020年に提唱したPLAN A blocksについて解説する．これは非専門医でも習得可能な7つの基本的神経ブロック（斜角筋間，腋窩，脊柱起立筋面，腹直筋鞘，大腿神経，内転筋管，膝窩坐骨神経）から構成される．ASRA-ESRAのDelphiコンセンサス研究により，神経ブロックの名称と解剖学的記述の国際的標準化が達成された．Bownessらは各ブロックに必要な解剖学的構造物を標準化した．日本では2013年の日本区域麻酔学会設立後，教育ガイドライン第2版で国際標準との整合性を図っている．PLAN A blocksは標準化された区域麻酔教育の実現と質の高い術後鎮痛の普及に寄与する．
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Keisuke Nakazawa (2025) conducted a review in Regional anesthesia. PLAN A blocks was evaluated. The PLAN A blocks approach standardizes regional anesthesia into seven fundamental techniques, offering a practical solution to complexity bias by prioritizing widespread applicability and safety.
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