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Midterm results of free internal thoracic artery grafting for myocardial revascularization
T Tashiro1, K Nakamura, S Sukehiro
1Department of Cardiovascular Surgery, University of Fukuoka School of Medicine, Jonanku, Japan.
Insights
Free internal thoracic artery (FITA) grafts show midterm results comparable to in situ internal thoracic artery (IITA) grafts in coronary artery bypass grafting. This study found similar graft patency and survival rates between FITA and IITA groups.
Area of Science:
- Cardiovascular Surgery
- Thoracic Surgery
- Vascular Grafting
Background:
- Investigated midterm outcomes of free internal thoracic artery (FITA) grafts in coronary artery bypass grafting (CABG).
- Compared FITA grafts with in situ internal thoracic artery (IITA) grafts.
Purpose of the Study:
- To evaluate the efficacy and long-term patency of FITA grafts.
- To compare clinical outcomes between patients receiving FITA grafts and those receiving only IITA grafts.
Main Methods:
- Retrospective analysis of 337 patients undergoing CABG between 1988 and 1995.
- 56 patients received 57 FITA grafts; comparison with IITA grafts.
- Postoperative graft angiography and survival analysis.
Main Results:
- Early graft patency: 93.2% for FITA vs. 96.0% for IITA (not significant).
- Late graft patency at 29.5 months: 100% for FITA vs. 92.1% for IITA (not significant).
- 5-year survival rates (cardiac death-free and angina-free) were comparable between FITA and IITA groups.
Conclusions:
- Free internal thoracic artery grafts offer late results comparable to in situ internal thoracic artery grafts.
- FITA grafting is a viable option for coronary artery bypass surgery with similar long-term outcomes.
Background:
This study investigated the midterm results after free internal thoracic artery (FITA) grafting for coronary artery bypass grafting.
Methods:
Between 1988 and 1995, coronary artery bypass grafting and postoperative graft angiography were performed in 337 patients, of whom 56 patients were treated with 57 FITA grafts. We examined the postoperative graft patency of FITA grafts compared with in situ internal thoracic artery (IITA) grafts, and the late results in the patients receiving at least one FITA graft (FITA group) were compared with those in the patients receiving only IITA graft (IITA group).
Results:
The early postoperative graft patency rate was 93.2% for the FITA grafts and 96.0% for the IITA grafts (not significant [NS]). Patients underwent sequential graft angiography at 29.5 months postoperatively (25 FITA and 89 IITA). The late graft patency rate was 100% and 92.1%, respectively (not significant). The cardiac death-free survival rate at 5 years was 93.5% in the FITA group and 96.6% in the IITA group (not significant), and the angina-free survival rate at 5 years was 80.6% and 83.2%, respectively (not significant).
Conclusions:
The FITA provides late results comparable with those attained with IITA.