Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2024, 168(3):223-228 | DOI: 10.5507/bp.2024.013

Influence of graft anastomosis and graft morphology on long-term patency of the saphenous vein after aortocoronary bypass

Okaikor Okantey1, 3, Tomas Jonszta2, 3, Jiri Sieja1, 3, Miriam Kende1, 3, Radim Brat1, 3, Lubomir Pavliska4
1 Department of Cardiac Surgery, University Hospital Ostrava, Ostrava, Czech Republic
2 Department of Radiology, University Hospital Ostrava, Ostrava, Czech Republic
3 Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
4 Department of Science and Research, University Hospital Ostrava, Ostrava, Czech Republic

Objective: Several factors are involved in the preservation of graft function after surgical myocardial revascularization. This follow-up study aimed to evaluate the effects of vein graft anastomosis and graft morphology on long-term graft patency a minimum of 10 years after aortocoronary bypass grafting.

Setting and Cohorts. This was a sub-analysis of a study that enrolled patients after isolated bypass surgery at the University Hospital Ostrava in order to evaluate the long-term graft patency of the saphenous vein after endoscopic harvest, a minimum of 10 years after aortocoronary bypass grafting.

Methods: Fifty angiograms, with a total of 90 grafts, after isolated myocardial revascularization were visualized using coronary computed tomography angiography, with 50% luminal stenosis or greater considered significant.

Results: The overall graft patency rate was 72.3%. The differences in occlusion rates between sequential and individual grafts were not statistically significant (P=0.156). All y-grafts were totally occluded. Graft and target artery diameters had a statistically significant influence on patency (P=1.000 and 0.381, respectively). Longer graft length and higher calcium scores were associated with statistically significant graft occlusion (P=0.033 and 0.005, respectively).

Conclusion: Sequential grafts can be constructed safely, especially when the goal is complete myocardial revascularization.

Keywords: sequential graft, graft patency, calcium score, graft morphology, target quality, graft length

Received: January 4, 2024; Revised: March 23, 2024; Accepted: March 28, 2024; Prepublished online: April 24, 2024; Published: September 12, 2024  Show citation

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Okantey, O., Jonszta, T., Sieja, J., Kende, M., Brat, R., & Pavliska, L. (2024). Influence of graft anastomosis and graft morphology on long-term patency of the saphenous vein after aortocoronary bypass. Biomedical papers, 168(3), 223-228. doi: 10.5507/bp.2024.013
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