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Three-stages assessment of coronary artery bypass grafts patency by intraoperative transit time flow measurement

Evaluation of coronary artery bypass grafts by intraoperative transit time flow measurement in three stages; on the resting heart, on beating heart, after heparin inactivation.

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12619000137190
Enrollment
87
Registered
2019-01-30
Start date
2019-02-01
Completion date
Unknown
Last updated
2020-09-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Intraoperative graft failure is a potentially avoidable major cause of cardiac morbidity and mortality and occurs in up to 3% of grafts (8% of patients) after coronary artery bypass grafting. At present, transit-time flow measurement (TTFM) is the most common intraoperative method for assessing graft function. Our randomized study using the VeriQ system allows to verify the adequacy of the grafts patency at all stages of the operation. In this way the TTFM values of all grafts were recorded intra-operatively in three stages: 1. Immediately after performing of the all distal anastomoses (with proximal snare on target corfonary artery and without it), 2. after the patient was weaned from cardiopulmonary bypass and the hemodynamic condition was assessed as being stable, 3. after heparin inactivation, before chest closure. This allows to control the grafts functionality after performing of each anastomosis and correct the surgical error immediately, without restoring repeat cardiac arrest.

Interventions

A randomized study comparing two groups of patients undergoing coronary artery bypass grafting (CABG) at our institute, where patient first group underwent transit time flow measurements (TTFM) of all bypass grafts using the VeriQ system (MediStim Inc., Oslo, Norway). The TTFM values of all grafts were recorded intra-operatively in three stages: 1. Immediately after performing of the all distal anastomoses (with proximal snare on target corfonary artery and without it), 2. after the patient was

A randomized study comparing two groups of patients undergoing coronary artery bypass grafting (CABG) at our institute, where patient first group underwent transit time flow measurements (TTFM) of all bypass grafts using the VeriQ system (MediStim Inc., Oslo, Norway). The TTFM values of all grafts were recorded intra-operatively in three stages: 1. Immediately after performing of the all distal anastomoses (with proximal snare on target corfonary artery and without it), 2. after the patient was weaned from cardiopulmonary bypass and the hemodynamic condition was assessed as being stable, 3. after heparin inactivation, before chest closure. Materials: Two hundred patients listed for CABG Procedures: All CABGs were performed through a median sternotomy during cardiopulmonary bypass. Full heparinization was given. Who: heart surgeon with 10 years experience Mode of delivery: face to face Number of times: twice / week

Sponsors

Federal State Budgetary Scientific Institution “Tomsk National Research Medical Center of the Russian Academy of Sciences”
Lead SponsorGovernment body

Study design

Allocation
Randomised controlled trial
Primary purpose
Treatment

Eligibility

Sex/Gender
All
Age
40 Years to No maximum
Healthy volunteers
No

Inclusion criteria

coronary artery disease

Exclusion criteria

Concomitant surgery (valve surgery, aorta surgery)

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026