Usefulness of transthoracic echocardiography in demonstrating coronary blood flow after coronary artery bypass grafting

Ng, Daniel W.C.; Vlachonassios, Konstantinos; Nimalasuriya, Anoshie R.; Nguyen, Vu T.; Wijesekera, Charmi; Khan, Aameera; Chandraratna, P.A.N.

doi:10.1016/j.amjcard.2003.12.037

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…Ng DW et al . [ 1 ] have studied the usefulness of TTE in demonstrating the CSBF before and after CABG and showed that there was a significant increase in CS VTI from 10.6 ± 1.93 to 13.4 ± 2.3 ( P = 0.01) with no significant change in CS diameter. In the present study, VTI after LAD revascularization increased from 8.93 ± 4.29 to 11.96 ± 5.68 ( P ≤ 0.0001) [ Table 1a ] and after OM revascularization, it increased from 11 ± 5.53 to 12.09 ± 5.43 ( P = 0.002) [ Table 1b ] with no statistically significant change in CS diameter.…”

Section: Discussionmentioning

confidence: 99%

“…The advantage of the present study is that CSBF was estimated before and after each branch of LCA unlike Ng DW et al . [ 1 ] who estimated the CSBF before and after complete revascularization. The present study could also demonstrate the correlation between CSBF and adequacy of LIMA to LAD grafting.…”

Section: Discussionmentioning

confidence: 99%

“…Ng DW et al . [ 1 ] and Meenakshi et al . [ 7 ] had no statistically significant change in the heart rate before and after surgical revascularization and PTCA respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Cardiac perfusion can be assessed by coronary sinus blood flow (CSBF). [ 1 ] In patients with coronary artery disease, there is reduced CSBF. Any intervention that increases coronary perfusion may also increase CSBF.…”

Section: Introductionmentioning

confidence: 99%

“…It can also be measured by the use of radioisotope dyes such as argon technique or xenon scintigraphy. [ 1 ] Feasibility and reproducibility of transesophageal echocardiography (TEE) in measuring CSBF have been previously demonstrated. [ 3 ]…”

Section: Introductionmentioning

confidence: 99%

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Transesophageal echocardiography estimation of coronary sinus blood flow for the adequacy of revascularization in patients undergoing off-pump coronary artery bypass graft

et al. 2015

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Aims and Objectives:Physiologically coronary sinus (CS) drains the left coronary artery (LCA) territory. Stenosis of the branches of LCA may decrease the coronary sinus blood flow (CSBF). Any intervention that aims at restoring the flow of the stenosed vessel increases coronary artery flow that should consequently increase the CSBF. Hence, this study was undertaken to assess the CSBF before and after each branch of LCA to determine the adequacy of surgical revascularization in patients undergoing elective off pump coronary artery bypass grafting (OPCAB) using transesophageal echocardiography (TEE).Materials and Methods:Thirty consecutive patients scheduled for elective OPCAB were enrolled. CSBF was assessed before and after each branch of LCA revascularization using TEE. Left internal mammary artery (LIMA) Doppler was also obtained post LIMA to left anterior descending (LAD) grafting.Results:Hemodynamic and echocardiographic variables were compared by means of Student's t-test for paired data before and after revascularization. The CSBF per beat (1.28 ± 0.71), CSBF per minute (92.59 ± 59.32) and total velocity time integral (VTI) (8.93 ± 4.29) before LAD grafting showed statistically significant increase to CSBF per beat (1.70 ± 0.89), CSBF per minute (130.72 ± 74.22) and total VTI (11.96 ± 5.68) after LAD revascularization. The CSBF per beat (1.67 ± 1.03), CSBF per minute (131.91 ± 86.59) and total VTI (11.00 ± 5.53) before obtuse marginal (OM) grafting showed statistically significant increase to CSBF per beat (1.91 ± 1.03), CSBF per min (155.20 ± 88.70) and total VTI (12.09 ± 5.43) after OM revascularization. In 9 patients, color flow Doppler of LIMA could be demonstrated which showed diastolic predominant blood flow after LIMA to LAD grafting.Conclusion:Demonstration of CSBF was simple and monitoring the trend of CSBF values before and after each graft of LCA territory will guide to determine the adequacy of surgical revascularization.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Ng DW et al . [ 1 ] and Meenakshi et al . [ 7 ] had no statistically significant change in the heart rate before and after surgical revascularization and PTCA respectively.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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