CT-angiographic Follow up of Patients That Underwent Coronary Bypass Surgery Between 1993-1997
Coronary artery surgery (CABG) is necessary to improve blood circulation in many patients with coronary artery disease. This is done by using alternative blood vessels (grafts) to bypass the stenosed coronary arteries. In CABG, vein grafts are traditionally used where surrounding tissue is removed, this may damage the vessel and influence its patency.
The "no-touch" technique was developed by Professor Domingos Souza at the Department of Cardiovascular and Thoracic Surgery, Örebro University Hospital. This technique includes taking out the vein with its surrounding tissue and by this way the vessel is less damaged. The first two follow ups have shown that no-touch grafts had better patency than conventionally extracted graft at 18 months and 8.5 years.
This long term follow up is a continuation of the randomized trial started in 1993 where the patency and incidence of stenoses in the no touch and conventional vein grafts has been studied.
|Coronary Artery Disease||Procedure: No touch technique Procedure: Conventional technique|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
|Official Title:||CT-angiographic Follow Upp of Patients That Underwent Coronary Bypass Surgery Between 1993-1997. A Randomized Longitudinal Trial.|
- Patency of the grafts [ Time Frame: Mean time of 15 years. ]
- Stenosis in the grafts. [ Time Frame: Mean time of 15 years. ]
|Study Start Date:||June 2010|
|Study Completion Date:||November 2011|
|Primary Completion Date:||November 2011 (Final data collection date for primary outcome measure)|
Active Comparator: No touch vein grafts
The grafts were harvested with there surrounding tissues.
Procedure: No touch technique
The vein graft is harvested with its surronding tissues.
Active Comparator: Conventional vein grafts.
The grafts were stripped from surrounding tissue.
Procedure: Conventional technique
The vein graft is stripped from its surrounding tissues.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01686100
|Department for Cardiovascular and Thoracic Surgery, Örebro University Hospital|
|Örebro, Sweden, 70185|