March 3, 2026Open Access

Demarcation Procedure: An Effective and Safe Method before Definitive Resection of Large Arteriovenous Malformations

TSTsubasa ShimizuKyorin University MOMine OzakiKyorin University YIYuki IwashinaKyorin University

Puntos clave

The demarcation procedure aims to minimize bleeding during the surgical resection of large arteriovenous malformations.
Reduction of intraoperative bleeding was notable, leading to a more efficient surgical process with quicker operative time.
Surgical resection of AVMs is often complex and carries risks, making effective methods like this significant.
This approach highlights the need for improved techniques in complicated surgeries, potentially enhancing patient safety.

Resumen

Objectives: Surgical resection of large arteriovenous malformations (AVMs) is challenging owing to its prolonged operative time and massive bleeding, particularly in anatomically complex regions. This study aimed to evaluate the efficacy of a staged "demarcation procedure," a partial incision designed to interrupt blood flow and form a scar plane, in reducing intraoperative bleeding and operative time during definitive resection.

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