Transit-Time Flow Measurement as a Predictor of Coronary Bypass Graft Failure at One Year Angiographic Follow-Up

2014 ◽  
Vol 30 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Per Lehnert ◽  
Christian H. Møller ◽  
Sune Damgaard ◽  
Thomas A. Gerds ◽  
Daniel A. Steinbrüchel
Keyword(s):  
Transit Time ◽  
Graft Failure ◽  
Flow Measurement ◽  
Bypass Graft ◽  
Coronary Bypass ◽  
Time Flow ◽  
Coronary Bypass Graft ◽  
One Year

scholarly journals Intraoperative transit time flow measurement to predict clinical outcomes in patient undergoing on pump coronary artery bypass graft

2017 ◽  
Vol 4 (4) ◽  
pp. 1286
Author(s):  
Chollada Suwannachod ◽  
Nakorn Boonme
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass Graft ◽  
Clinical Outcomes ◽  
Transit Time ◽  
Graft Failure ◽  
Flow Measurement ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Time Flow

Background: Transit time flow measurement (TTFM) is used for intraoperative graft measurement to estimate graft failure. PI≤3 was suggested because it shows lower incidence of early graft failure. Objective of the study was to compare myocardial function and clinical outcomes of patients who underwent coronary artery bypass graft (CABG) surgery, between PI≤3 in all grafts (optimal group) and PI >3 in one or more grafts (suboptimal group) by Transit time flow measurement (TTFM).Methods: 90 patients who underwent CABG since June 2012 to December 2014 were included. Patients were classified into 2 groups: Optimal group (n=32) and Suboptimal group (n=58). CABG with intraoperative TTFM was performed as standard. Postoperative outcomes of both groups were compared.Results: Patients whose postoperative EF was increased were found in optimal group more than suboptimal group (62.1% vs 25%, p<0.001). The patients whose postoperative EF increased equal or more than 5% was found in optimal group more than suboptimal group (73.2% vs 25%, p=0.002). Suboptimal group found one patient with myocardial infarction but optimal group found none (3.13% and 0%). Postoperative atrial fibrillation and prolong ventilator more than 48 hours were found in suboptimal group more than optimal group (43.75% vs 37.93%, 62.50% vs 37.93%). In midterm, postoperative follow-up, all-cause mortality in suboptimal group was higher than optimal group (3.13% vs 1.72).Conclusions: Optimal group had patients whose postoperative EF significantly increased more than suboptimal group. Tendency of finding postoperative complications in suboptimal group was more than in optimal group.

scholarly journals One-Year Coronary Bypass Graft Patency

Circulation ◽  
2004 ◽  
Vol 110 (22) ◽  
pp. 3418-3423 ◽  
Author(s):  
Petr Widimsky ◽  
Zbynek Straka ◽  
Petr Stros ◽  
Karel Jirasek ◽  
Jaroslav Dvorak ◽  
...  
Keyword(s):  
Bypass Graft ◽  
Coronary Bypass ◽  
Graft Patency ◽  
Coronary Bypass Graft ◽  
One Year

Roles of Transit-Time Flow Measurement for Coronary Artery Bypass Surgery

2018 ◽  
Vol 66 (06) ◽  
pp. 426-433 ◽  
Author(s):  
Yasushi Takagi ◽  
Yoshiyuki Takami
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Transit Time ◽  
Graft Failure ◽  
Flow Measurement ◽  
Coronary Artery Bypass Surgery ◽  
Coronary Circulation ◽  
Artery Bypass ◽  
Flow Characteristics ◽  
Time Flow

AbstractTransit-time flow measurement (TTFM) has been increasingly applied to detect graft failure during coronary artery bypass grafting (CABG), because TTFM is less invasive, more reproducible, and less time consuming. Many authors have attempted to validate TTFM and to gain the clear cutoff values and algorithm in TTFM to predict graft failure. The TTFM technology has also been shown to be a useful tool to investigate CABG graft flow characteristics and coronary circulation physiology. It is important to recognize the practical roles of TTFM in the cardiac operating room by review and summarize the literatures.

Enhancement of flow measurement for graft verification

2019 ◽  
Vol 27 (8) ◽  
pp. 646-651
Author(s):  
Yury Y Vechersky ◽  
Vasily V Zatolokin ◽  
Boris N Kozlov ◽  
Aleksandra A Nenakhova ◽  
Vladimir M Shipulin
Keyword(s):  
Coronary Artery ◽  
Transit Time ◽  
Flow Measurement ◽  
Artery Bypass ◽  
Coronary Bypass ◽  
Flow Measurements ◽  
Technical Problems ◽  
Technical Errors ◽  
Time Flow ◽  
Coronary Bypass Grafts

Background We aimed to evaluate multiple transit-time flow measurements during coronary artery bypass grafting. Methods Transit-time flow measurements were performed first on the arrested heart both with and without a proximal snare on the target coronary artery, second, after weaning from cardiopulmonary bypass, and third, before chest closure. Results Among the 214 grafts considered, 9 (4.2%) were patent and 6 (2.8%) were failing. In the failed grafts, an abnormal transit-time flow was found during the first measurement, in 5 (2.3%) cases with a proximal snare and in one (0.47%) without a snare. In these cases, technical errors with the distal anastomoses were found and immediately corrected. A problem with the proximal anastomosis was found in one graft during the second measurement and corrected right away. Bending due to excessive length was found in 2 (0.93%) grafts during the third measurement, and graft repositioning was performed. The first transit-time flow measurement showed that mean graft flow was significantly decreased with a proximal snare compared to without a proximal snare, throughout the entire coronary territory. Pulsatility index during the first transit-time flow measurement was higher with a proximal snare than without one. Conclusions The 3-time transit-time flow measurement strategy makes it possible to verify and immediately correct technical problems with coronary bypass grafts.

Clinical outcome after surgical or percutaneous revascularization in coronary bypass graft failure

2013 ◽  
Vol 14 (6) ◽  
pp. 438-445 ◽  
Author(s):  
Ralf E. Harskamp ◽  
Marcel A. Beijk ◽  
Peter Damman ◽  
Wichert J. Kuijt ◽  
Pier Woudstra ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Graft Failure ◽  
Bypass Graft ◽  
Coronary Bypass ◽  
Coronary Bypass Graft ◽  
Percutaneous Revascularization

scholarly journals -225-THE VALUE OF AORTO-CORONARY BYPASS GRAFT FLOW MEASUREMENT

1986 ◽  
Vol 50 (6) ◽  
pp. 525
Author(s):  
KAZUTAKA YAMAMOTO ◽  
YASUMASA HIROOKA ◽  
YASUYUKI HOSODA ◽  
MASAYOSI OZEKI ◽  
ATSUSI TANAKA
Keyword(s):  
Flow Measurement ◽  
Bypass Graft ◽  
Coronary Bypass ◽  
Graft Flow ◽  
Coronary Bypass Graft
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