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Ultrasound vasography evaluation of radial arterial grafts used for coronary arterial bypass surgery

The Japanese Journal of Thoracic and Cardiovascular Surgery volume 49, pages 201–206 (2001)Cite this article

Abstract

Objectives: For coronary bypass surgery, radial arteries are often used as bypass grafts. Some of these arteries however, have arteriosclerotic lesions. We attempted to evaluate the relationship between arteriosclerosis and vasodilation.Methods: Prior to bypass surgery, 20 patients underwent ultrasound vasography to determine the condition of their radial and brachial arteries. Flow-mediated dilation, which is the same as endothelium-dependent vasodilation, was measured in the brachial artery of the nondominant arm by reactive hyperemia after 5-minute forearm ischemia. Vasodilation after application of a sublingual glyceryl trinitrate spray was also measured.Results: During surgery, 4 of 20 radial arteries demonstrated calcification, and 3 of the 4 could be used by removing the calcified part. However, the other artery, which had extensive calcification that could not be detected by ultrasound vasography, was discarded. The amount of vasodilation seen after the administration of sublingual glyceryl trinitrate had no correlation with calcified grafts. Calcified radial arteries demonstrated significantly poor brachial artery vasodilation by an endothelial-dependent vasodilation test.Conclusion: Calcification in radial arteries can thus only be evaluated by flow-mediated dilation.

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Affiliations

  1. Department of Thoracic Surgery, Maizuru Mutual Hospital, 1035 Hama, 625-8585, Maizuru, Kyoto, Japan

    Keishi Ueyama

  2. Department of Internal Medicine, Fukui Cardiovascular Center, Fukui, Japan

    Bunji Kaku

  3. Department of Surgery, Fukui Cardiovascular Center, Fukui, Japan

    Hirokazu Ohashi, Yasushi Tsutsumi, Takahiro Kawai, Tetsuyuki Ueda & Masateru Ohnaka

Authors
  1. Keishi Ueyama
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  2. Bunji Kaku
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  3. Hirokazu Ohashi
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  4. Yasushi Tsutsumi
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  5. Takahiro Kawai
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  6. Tetsuyuki Ueda
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  7. Masateru Ohnaka
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Ueyama, K., Kaku, B., Ohashi, H. et al. Ultrasound vasography evaluation of radial arterial grafts used for coronary arterial bypass surgery. Jpn J Thorac Cardiovasc Surg 49, 201–206 (2001). https://doi.org/10.1007/BF02913516

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  • DOI: https://doi.org/10.1007/BF02913516

Key words

  • coronary arterial bypass surgery
  • radial arterial graft
  • ultrasound vasography
  • endothelium-dependent vasodilation
  • flow-mediated dilation