生きている成人のドナーの肝臓移植は,同時に脊髄摘出手術を行わない
Nobuhisa Akamatsu1, Kaito Fukuda1, Yujiro Nishioka1
1Artificial Organ and Transplantation Surgery Division, Department of Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
Hepatobiliary surgery and nutrition
|February 12, 2026
まとめ
生きたドナーによる肝臓移植 (LDLT) は,管切除術なしで成功することができます. 移植の生存率は,移植のサイズによって著しく影響を受けないが,高齢のドナーと臓-移植の不釣り合いが,失敗のリスクを増大させる.
科学分野:
- 肝臓病理学 肝臓病理学
- 移植手術 移植手術について
- 外科手術の結果について
背景:
- 生きたドナーの肝臓移植 (LDLT) での手術中の入流調節,特に同時スプレネクトミーとシャント結合の必要性は,移植の生存率を向上させ,小規模症候群 (SFSS) を予防するために,議論の対象であり続けています.
- これらの手順は,LDLTの間にいくつかのセンターで採用され,ポータル血液動力学に反対の影響を及ぼし,その全体的な利点は不確実です.
研究 の 目的:
- simultaneous splenectomyなしで実施された成人LDLTにおける受容者の結果に対する移植サイズの影響を評価する.
- この患者コホートにおける移植の生存に関連する特定の要因を特定する.
主な方法:
- 同時にを切除手術を受けなかった234人の成人LDLT受容者の遡及的分析.
- グラフトの大きさは,グラフトと受容体の重量比 (GRWR) を用いて評価され,小さなグラフトを定義する0.7%のカットオフがありました.
主要な成果:
- 小型移植 (GRWR <0.7%) と非小型の移植 (GRWR ≥0.7%) のグループでは,1年,3年,5年の移植または患者の生存率において有意な差異は観察されなかった.
- 移植不全の独立した危険因子には,高齢のドナーの年齢 (>45歳) とと移植の大きさの不均衡 (<70%) が含まれていた. 両方の因子を持つ受容者は,移植の生存率が著しく低下した (P<0.001).
- 移植後の受容者は,移植の大きさに関係なく,血小板数と移植体積の増加を示し,ポータル静脈の流れとシャント/のサイズが減少しました.
結論:
- 大人のLDLTは,同時スプレネクトミーの日常的な必要なしに成功裏に実行することができます.
- 臓切除は,臓移植の大きさの大きな不均衡がある場合,または,古いドナーからの移植を使用して移植失敗のリスクを軽減する場合,選択的に検討することができます.
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