Estimation of Left Internal Thoracic Artery Flow Reserve After Coronary Artery Bypass Grafting Using Doppler Flow Wire.
|
Accession number;99A0630026
|
| Title;Estimation of Left Internal Thoracic Artery Flow Reserve After Coronary Artery Bypass Grafting Using Doppler Flow Wire. |
| Author;
YOSHIDA SATORU
(Jikei Univ. School of Medicine)
GOTO YUTAKA
(Jikei Univ. School of Medicine)
SUGIURA TOORU
(Jikei Univ. School of Medicine)
HASHIMOTO KOICHI
(Jikei Univ. School of Medicine)
OGAWA TAKAYUKI
(Jikei Univ. School of Medicine)
MORI CHIKARA
(Jikei Univ. School of Medicine)
SAKAMOTO HIROSHI
(Jikei Univ. School of Medicine)
SEO ATSUSHI
(Fuji City Central Hosp.)
KUROSAWA HIROMI
(Jikei Univ. School of Medicine)
|
Journal Title;J Cardiol
|
Journal Code:Y0264A
|
ISSN:0914-5087
|
|
VOL.33;NO.6;PAGE.297-305(1999)
|
| Figure&Table&Reference;FIG.4, TBL.4, REF.9 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The usefulness of the left internal thoracic artery(LITA) for aortocoronary bypass grafting is now established. Reports of variation in LITA graft function are rare. Graft flow was measured using a Doppler flow wire to estimate graft function in 27 patients(24 males, 3 females) who underwent LITA grafting to the left anterior descending artery. Patients were classified into the following 3 groups: Group A consisted of 9 patients with normal left ventricular function and no native flow; Group B consisted of 11 patients with normal ventricular function and good native flow; Group C consisted of 7 patients with abnormal left ventricular function and no native flow. LITA graft function was also estimated 1 year after operation in 12 of these 27 patients(4in each group). Diastolic/systolic velocity ratio(DSVR) and flow reserve were determined in the proximal, middle, and distal portions of the LITA graft and native left anterior descending artery before and after papaverine administration(8-10mg). DSVR was significantly higher in the distal portion than in the proximal portion(p<0.01), but this value did not change after papaverine administration. After 1 year, DSVR in the proximal portion was significantly higher in Group C than in Groups A or B(p<0.05 for both). Four weeks after operation, the flow reserve of the distal portion was significantly higher in Group A than in Group C(p<0.001). After 1 year, this value was significantly higher in Group A than in either Groups B or C(p<0.01, p<0.001, respectively). The rate of increase in flow reserve in the distal portion was significantly greater in Group A(23.4%) than in groups B(2.53%) or C(1.94%; p<0.05 for both). The distal portion of the LITA was the best measurement site, since the flow pattern in the LITA graft varied throughout all portions. Diastolic flow velocity in the LITA graft was dominant in patients with myocardial damage.... (author abst.) |
|
|
|
Related Articles;
|
|
|
