Non-invasive evaluation of internal thoracic artery anastomosed to the left anterior descending artery with 320-detector row computed tomography and adenosine thallium-201 myocardial perfusion scintigraphy

Yasushi Takagi, Kiyotoshi Akita, Hiroshi Kondo, Michiko Ishida, Kan Kaneko, Masato Sato, Motomi Ando

研究成果: ジャーナルへの寄稿学術論文査読

2 被引用数 (Scopus)

抄録

Purpose: We evaluated the relationship between internal thoracic artery (ITA) stenosis anastomosed to the left anterior descending artery (LAD) and the degree of LAD stenosis using 320-detector row computed tomography (320-ADCT) and adenosine thallium-201 myocardial perfusion scintigraphy (Tl-201-MPS). Methods: We included 101 patients who underwent coronary artery bypass grafting (CABG) using ITA grafts; 320-ADCT and adenosine Tl-201-MPS were performed 2-3 months after CABG. Clinical parameters, degree of LAD stenosis, and regional myocardial ischemia of the LAD territory were compared between patients without ITA stenosis (Group A) and with ITA stenosis (Group B). Results: Thirty patients (30%) had ≤ 75% LAD stenosis, and 9 patients (30%) showed significant ITA stenosis. Regional ischemia was noted in 23 patients (23%). There were no differences in clinical parameters between the 2 groups. Twenty-two patients (24%) in Group A and 8 patients (89%) in Group B had ≤ 75% LAD stenosis (P ≤0.002). No Group B patients had regional myocardial ischemia of the LAD territory. Conclusion: We concluded that ≤ 75% LAD stenosis significantly influences ITA stenosis, without associated regional myocardial ischemia of the LAD territory. Non-invasive 320-ADCT and adenosine Tl-201-MPS for ITA evaluation may be useful for long-term follow-up of patients after CABG.

本文言語英語
ページ(範囲)24-30
ページ数7
ジャーナルAnnals of Thoracic and Cardiovascular Surgery
18
1
DOI
出版ステータス出版済み - 2012

All Science Journal Classification (ASJC) codes

  • 外科
  • 呼吸器内科
  • 循環器および心血管医学
  • 消化器病学

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