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Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
Published on: November 24, 2014
[New technique to determine graft length using the proximal anastomotic system during off-pump coronary artery bypass
1Department of Surgery I, Toyama Medical and Pharmaceutical University, Toyama, Japan.
Insights
Determining aortic graft length for coronary arteries like the circumflex (Cx) and posterior descending (PD) is challenging. A new two-step intermediate point (IMP) method simplifies graft length determination for Cx and PD regions.
Area of Science:
- Cardiovascular Surgery
- Surgical Anatomy
- Medical Device Technology
Context:
- Accurate graft length determination is crucial for successful aortic connector procedures.
- Challenges exist in measuring graft length to the circumflex (Cx) and posterior descending (PD) coronary arteries due to cardiac morphological changes.
- Existing methods may lead to inaccuracies in graft length estimation for specific coronary targets.
Purpose:
- To introduce a novel two-step method using an intermediate point (IMP) for determining aortic graft length.
- To address the difficulties in graft length measurement for Cx and PD regions in aortic bypass surgery.
- To provide a more reliable approach for optimizing graft fit and reducing surgical complications.
Summary:
- A new two-step technique involving an intermediate point (IMP) is proposed for calculating aortic graft length.
- This IMP method simplifies graft length determination for the circumflex (Cx) artery.
- Care must be taken to avoid cardiac deformation when measuring the distance from the IMP to the anastomosis site, particularly for the posterior descending (PD) region, to ensure accurate graft length.
Impact:
- Potential to improve the precision of graft length selection in coronary artery bypass grafting.
- May reduce intraoperative adjustments and improve surgical efficiency.
- Aims to enhance the long-term patency and success rates of aortic connectors in cardiac surgery.
Abstract:
For determining the graft length for an aortic connector, grafts to the circumflex (Cx) and the posterior descending (PD) regions often present problems. Difficulties in determining the appropriate distance between the aorta and coronary artery have been reported to be due to changes in the morphology of the heart following the evolution of Cx and PD. We set an intermediate point (IMP) in advance and then determine graft distance in 2 steps. When using the IMP method, determination of the graft length in the Cx region is not difficult. However, attention should be paid to determine the distance between the IMP and anastomosed site without deforming the heart, as the graft length becomes shorter if the heart as a whole is pulled up by traction of the diaphragm during evolution to the PD region.
