| Midterm Results of Radial Artery
Graft in Coronary Artery Bypass Surgery: AC Bypass Technique
versus Y-Graft Technique |
(Department of Cardiovascular Surgery, Kumamoto
Central Hospital, Kumamoto, Japan, Department of Cardiovascular
Surgery, Kurashiki Central Hospital*, Kurashiki, Japan and Department
of Cardiovascular Surgery, Hokuto Cadiovascular Hospital**, Sapporo,
Japan)
| Jiro Esaki |
Motoaki Ohnaka* |
Shinya Takahashi* |
| Kotaro Shiraga** |
Nobushige Tamura* |
Tatsuhiko Komiya* |
|
We treated 162 patients by isolated
CABG with a left internal thoracic artery (LITA) anastomosed
to the left anterior descending artery and a radial artery anastomosed
to the circumflex artery between August 1996 and December 2002.
Late angiograms were performed 6 to 65 months (21.7±15.8) after
the operation. The purpose of this study was to compare midterm
results of radial arteries anastomosed to the side wall of LITA
(group Y) with those anastomosed to the aorta (group AC). There
were no operative deaths in either group and no difference in
the postoperative complication rate including cerebral infarction.
The early patency of group Y was lower than that of group AC
(group AC: 97.8%, group Y: 87.1%, p＝0.017), and also the
late patency of group Y was significantly lower than that of
group AC (group AC: 90.9%, group Y: 36.4%, p＝0.0008).
All of the early patent radial artery grafts in group AC were
patent on late angiograms, but 3 of the 25 anastomoses in group
Y which were clearly patent on early angiograms later showed
a string sign later. When using a radial artery graft in circumflex
artery territory, we recommend an aorto-coronary bypass graft
rather than Y-graft.
Jpn. J. Cardiovasc. Surg. 34: 98-102 (2005) |
|
