心臓の先天性疾患における冠動脈間アナストモゼ
C M Bloor1, J F Keefe, M J Browne
1Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA.
Circulation
|April 1, 2015
まとめ
心臓の先天性疾患における冠動脈間アナストモスは,対照群と大きさの違いはありませんが,手術を受けた患者の年齢とともに増加します. 手術によるトラウマは,アナストモスの増加の原因である可能性は低い.
科学分野:
- 心血管研究 循環器科の研究
- ペディアトリック・カルディオロジー
- アナトミック・スタディズ アナトミック・スタディズ
背景:
- 冠動脈間アナストモスは,心筋の血液供給に不可欠である.
- 生まれながらの心臓病 (CHD) におけるその役割は完全に理解されていません.
- 普通のアナストモスは直径74μまであります.
研究 の 目的:
- CHD患者の冠動脈間アナストモスの頻度と大きさを調査する.
- CHD患者のアナストモスを対照群と比較する.
- 年齢,シアノシス,外科的介入などのアナストモシスに影響を与える要因を調査する.
主な方法:
- 心臓病を患った患者の35個の心臓の組織学的な検査.
- 冠動脈間アナストモスの大きさと頻度の比較分析.
- 臨床データ (年齢,シアノシス,外科歴) に関する発見の統計的評価.
主要な成果:
- 非手術されたCHDの心臓におけるアナストモスは,貧血,高縮,またはシアノシスに関係なく,対照群に類似していました.
- シアノティック剤を服用した患者は,アシアノティック剤を服用した患者よりもかなり若かった.
- 手術を受けた患者は,アナストモゼの頻度と大きさの有意な増加を示した.
- 手術後の生存時間 (≤48時間 vs. >5週間) にかかわらず,手術を受けた患者のアナストモスの増加が観察されました.
- 5歳以上のCHD患者では,アナストモスの頻度と大きさの有意な増加が観察されました.
結論:
- CHDにおける冠動脈間アナストモスは,手術されていない症例における対照群と有意に異なるものではありません.
- 年齢は重要な要因であり,アナストモスは高齢のCHD患者 (>5歳) のサイズと頻度が増加しています.
- 外科的介入はアナストモゼに影響を与えるかもしれないが,その影響は外科的トラウマにのみ起因するものではない.
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