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Piggyback anastomosis using a single Heartstring device: A low-invasiveness, low-cost technique
Azumi Hamasaki1, Tetsuro Uchida2, Yoshinori Kuroda1
1Second Department of Surgery Yamagata University Faculty of Medicine Yamagata, Japan.
Insights
Coronary artery bypass grafting (CABG) patients benefit from a new piggyback anastomosis technique. This method, using a single Heartstring device, reduces aortic invasion and costs while maintaining safety.
Area of Science:
- Cardiovascular Surgery
- Medical Devices
- Minimally Invasive Procedures
Background:
- Coronary artery bypass grafting (CABG) offers superior long-term outcomes compared to catheter interventions but has a higher risk of perioperative stroke.
- Cerebral complications during CABG can be mitigated by epiaortic ultrasound, avoiding aortic clamping, and employing anastomosis assist devices.
- Multivessel bypass grafting often requires multiple proximal anastomoses, increasing aortic manipulation.
Discussion:
- The piggyback anastomosis technique consolidates multiple proximal anastomoses into one site, reducing aortic invasion and the need for multiple devices, thereby lowering costs.
- The Heartstring device is a minimally invasive option for anastomosis, but its irreversible removal poses challenges for potential repairs without aortic clamping.
- A novel, safe method for performing piggyback anastomosis using a single Heartstring device has been developed, enhancing procedural safety and efficiency.
Key Insights:
- A safe and cost-effective method for piggyback anastomosis using a single Heartstring device has been established.
- This technique minimizes aortic invasiveness, crucial for reducing perioperative stroke risk in CABG patients.
- The procedure streamlines the grafting process, potentially reducing operating time and resource utilization.
Outlook:
- Further clinical validation is needed to assess the long-term efficacy and safety of this specific piggyback anastomosis technique.
- Investigating modifications to the Heartstring device or alternative devices could further enhance the safety profile of irreversible anastomosis procedures.
- This approach holds promise for improving patient outcomes and reducing healthcare costs in complex CABG procedures.
Abstract:
Coronary artery bypass grafting offers patients a better long-term prognosis than catheter intervention, but it carries a higher risk of perioperative stroke. To reduce cerebral complications associated with proximal anastomosis, preprocedural epiaortic ultrasound assessment, avoidance of aortic clamping, and the use of an anastomosis assist device are useful. For multivessel bypass across two regions, piggyback anastomosis, which stacks the proximal anastomoses of the two grafts, reduces aortic invasion because this technique requires only one proximal anastomosis. In addition, this method uses only one device, which helps to reduce costs. The Heartstring is considered among the least invasive of the various anastomosis assist devices. However, its removal is irreversible, and once the sutures are cut, repair without aortic clamping is difficult. We have developed a safe method for performing a piggyback anastomosis using a single Heartstring device. This cost-effective technique produces a safe piggyback anastomosis with minimal invasiveness to the aorta.

