Different Flow Patterns Between Left and Right Internal Thoracic Artery Grafts Influence the Evaluation of Severe Graft Stenosis by Transthoracic Doppler Echocardiography

Mizukami, Naoko; Kisanuki, Akira; Hamasaki, Shuichi; Takasaki, Kunitsugu; Yuasa, Toshinori; Kuwahara, Eiji; Ueya, Nami; Horizoe, Yoshihisa; Chaen, Hideto; Maruyama, Ikuro; Imoto, Yutaka

doi:10.1016/j.echo.2011.03.015

Cited by 7 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While evaluation of LAD by transthoracic echocardiography only allows measuring velocities of flows, the study of the ITA at the supraclavicular level enables the measurement of important variables such as diameter, flow, and flow reserve. Furthermore, the high intraobserver and interobserver concordances in the ITA diameter measurements and Doppler spectra obtained in this and previous studies suggest that the findings represent the actual events occurring in the coronary circulation after CABG for both the surgical strategies employed …”

Section: Discussionsupporting

confidence: 76%

“…12 server and interobserver concordances in the ITA diameter measurements and Doppler spectra obtained in this and previous studies suggest that the findings represent the actual events occurring in the coronary circulation after CABG for both the surgical strategies employed. 9,26,27 Although the patients in this study had recent acute myocardial ischemia that resulted in acute myocardial infarction or unstable angina at the time of hospital admission, they showed similar clinical fea-…”

Section: Discussionmentioning

confidence: 82%

See 1 more Smart Citation

The impact of ligation of proximal side branches on blood flow and functional status of the internal thoracic artery in coronary anastomosis

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 82%

The impact of ligation of proximal side branches on blood flow and functional status of the internal thoracic artery in coronary anastomosis

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A noninvasive method for risk stratification and clinical follow-up would be useful in those patients. The value of color Doppler ultrasonography (CDUS) with the supraclavicular approach for preoperative evaluation of the native LIMA as well as for the postoperative detection of LIMA graft patency was recently suggested [10, 11]. These studies focused mainly on the parameters of the ratio of peak flow velocities during the diastolic and systolic period or each parameter (the peak systolic velocity [PSV], peak diastolic velocity [PDV], and end-diastolic velocity [EDV]) on CDUS individually.…”

Section: Introductionmentioning

confidence: 99%

The Role of Color Doppler Ultrasonography in the Perioperative Period of Coronary Artery Bypass Grafting: Comparison with Transit-Time Flow Measurement

et al. 2021

View full text Add to dashboard Cite

Introduction: The value of color Doppler ultrasonography (CDUS) with the supraclavicular approach for preoperative evaluation of the native left internal mammary artery (LIMA) as well as for the postoperative detection of LIMA graft patency was recently suggested. However, the parameters such as the flow volume and pulsatile index (PI) have not been studied in detail. Objectives: The objectives of this study were to analyze the LIMA data in the perioperative period and explore the relationships between the intraoperative graft flow with transit-time flow measurement (TTFM) and the postoperatively measured parameters with CDUS. Methods: Fifty-eight patients with significant stenosis (≥70%) or occlusions in left anterior descending artery (LAD) who were referred for isolated coronary artery bypass grafting (CABG) were enrolled in this study and examined by CDUS prior to CABG from April to July 2016. The perioperative measurements of proximal LIMA by CDUS were compared. In addition, the correlation between the intraoperative graft flow, such as the mean graft flow (MGF) and PI, and the immediate postoperative measurements of CDUS in LIMA bypassed grafts was statistically analyzed. Results: Six patients were excluded due to screening failure, or insufficient visualization of CDUS images for analysis. Fifty-two patients with in situ LIMA-LAD graft, with or without additional arterial grafts or saphenous vein grafts, were included in the final analysis. The postoperative diameters of proximal LIMA were not significantly different from preoperative diameters (2.21 ± 0.18 vs. 2.27 ± 0.22 mm, p = 0.070). The flow volume on the early postoperative CDUS significantly increased (39.77 ± 21.59 vs. 25.96 ± 13.17 mL/min, p < 0.001) and the PI significantly decreased (1.43 ± 0.46 vs. 4.20 ± 1.49, p < 0.001) versus those of preoperative measurements. The MGF had a moderate correlation with the flow volume on the early postoperative CDUS (r = 0.414, p = 0.002), and the PI by TTFM had a weak correlation with that by CDUS (r = 0.353, p = 0.010) as well. Conclusions: The MGF and PI by TTFM in CABG were associated with in situ LIMA graft parameters measured by CDUS studies. CDUS is a useful functional noninvasive tool for the preoperative screening and postoperative follow-up of patients with in situ LIMA bypass.

show abstract

“…The DF is thought to be the most powerful predictor because the peak velocity ratio is affected by native vessel stenosis, and the diameter and [23]. Jones et al [17] described in their review report that the DF of less than 50% was shown to be the best criterion for the prediction of significant LIMA graft stenosis.…”

Section: Diastolic Fraction (Df)mentioning

confidence: 99%

“…As the native course of the LIMA is more or less modified by the surgical procedure, the left supraclavicular fossa approach is preferred, which has the highest detection rate and is the best site for repeated scans. By TDE the LIMA rate detection is high, from 81% to 98% [3,[15][16][17].…”

Section: Pulsed Wave and Color Doppler Assessment Of The Lima Graftmentioning

confidence: 99%

Transthoracic Doppler echocardiography of the left internal mammary artery graft

Parv¹

2013

Med Ultrason

View full text Add to dashboard Cite

Assessment of the left internal mammary artery (LIMA) graft patency currently requires invasive investigation through coronary angiography. In the last years the successful application of noninvasive Doppler spectrum analysis has been reported for patency assessment of the LIMA graft after myocardial revascularization. Echocardiography is considered to be a sensitive noninvasive screening modality to diagnose critical narrowing of LIMA grafts and angiography should be reserved for cases in which Doppler echocardiography fails to visualize the LIMA or reveals an abnormal flow pattern.

show abstract

Different Flow Patterns Between Left and Right Internal Thoracic Artery Grafts Influence the Evaluation of Severe Graft Stenosis by Transthoracic Doppler Echocardiography

Cited by 7 publications

References 24 publications

The impact of ligation of proximal side branches on blood flow and functional status of the internal thoracic artery in coronary anastomosis

The impact of ligation of proximal side branches on blood flow and functional status of the internal thoracic artery in coronary anastomosis

The Role of Color Doppler Ultrasonography in the Perioperative Period of Coronary Artery Bypass Grafting: Comparison with Transit-Time Flow Measurement

Transthoracic Doppler echocardiography of the left internal mammary artery graft

Contact Info

Product

Resources

About