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術後造影が可能であったindividual SVG 184本とsequential SVG 52本を対象に,術後のグラフト開存率を比較検討した.individual SVG群とsequential SVG群の総開存率はそれぞれ86%,94%で有意差はなかった.吻合冠動脈別の開存率は,individual SVG群はLAD 96%,LCX 67%,RCA 90%,Dx 63%で,sequential SVG群はLAD 100%,LCX 95%,RCA 100%,Dx 91%であった.LCXにおいてsequential SVG群が有意に開存率が高かった(p<0.05).sequential SVG群の吻合部位別の開存率は,側々吻合部(SSA)92%,端側吻合部(ESA)96%で極めて高い開存率を示した.DxおよびLCX領域の吻合部位別の開存率はSSA-Dx 89%,ESA-Dx 100%,SSA-LCX 100%,ESA-LCX 93%であり,individual SVG群よりも高い開存率を示したが有意差はなかった.以上よりLCX領域のsequential graftingは有用と考えられた.
We analyzed the graft patency rates of the individual saphenous vein graft (SVG) group and those of the sequential SVG group.
In the individual SVG group, 184 SVGs were anas-tomosed to 184 coronary arteries. Twenty-six SVGs were used sequentially to 52 coronary arteries in the sequential group.
The patency rates of all the SVGs in both groups showed no significant differences. The patency of left anterior descending (LAD), left circumflex (LCX), right coronary artery (RCA) and diagonal branch (Dx) was 96%, 67%, 90% and 63% respectively in the individ-ual SVG group.
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