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Surgery Today
Published in: Surgery Today 10/2023

03-04-2023 | CABG | Original Article

Twenty-year outcomes of free and I-composite radial artery grafts for coronary artery revascularization

Authors: Hiroshi Sato, Joji Fukada, Yu Iwashiro, Yukihiko Tamiya

Published in: Surgery Today | Issue 10/2023

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Abstract

Purpose

To compare the 20-year outcomes of coronary artery grafting (CABG) using radial artery (RA) grafts (free and I-composite) and internal thoracic artery (ITA) grafts.

Methods

Long-term graft patency was evaluated in patients who underwent isolated CABG between August, 1996 and January, 2022. The long-term graft patency of free RA grafts, I-composite ITA-RA grafts, and saphenous vein (SV) grafts were compared.

Results

The RA was used as a coronary bypass conduit in 111 of the 246 patients enrolled in this study. The RA patency after 10 and 20 years was 94.2% and 76.6%, respectively. Landmark analysis showed that although graft patency for up to 10 years did not differ between the RA and ITA grafts (hazard ratio = 0.87; P = 0.8), patency of the ITA grafts was better from 10 to 20 years post-surgery (hazard ratio = 0.19; P = 0.013). The 20-year graft patency of the I-composite RA grafts was better than that of the free RA grafts (80.0% vs. 72.4%; P = 0.029), but not significantly different from that of the ITA grafts (80.0% vs. 90.7%; P = 0.24).

Conclusions

The 20-year patency of the I-composite ITA-RA graft was better than that of the free RA graft; therefore, the I-composite graft may be an effective conduit for CABG.
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Metadata
Title
Twenty-year outcomes of free and I-composite radial artery grafts for coronary artery revascularization
Authors
Hiroshi Sato
Joji Fukada
Yu Iwashiro
Yukihiko Tamiya
Publication date
03-04-2023
Publisher
Springer Nature Singapore
Keywords
CABG
CABG
Published in
Surgery Today / Issue 10/2023
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-023-02679-9

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