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
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概要
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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.
著者
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Ando Motomi
Department Of Cardiovascular Surgery Fujita Health University
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AKITA KIYOTOSHI
Department of Cardiovascular Surgery, Fujita Health University
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Sato Masato
Department Of Cardiovascular Surgery Doctoral Program In Functional And Regulatory Medical Sciences
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Kaneko Kan
Department Of Cardiovascular Surgery Fujita Health University
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Ishida Michiko
Department Of Cardiovascular Surgery Fujita Health University
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Akita Kiyotoshi
Department Of Cardiovascular Surgery Fujita Health University
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Takagi Yasushi
Department Of Cardiovascular Surgery Fujita Health University
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Kondo Hiroshi
Department Of Agricultural Chemistry College Of Agriculture And Veterinary Medicine Nihon University
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Takagi Yasushi
Department Of Anesthesia Machida Municipal Hospital
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Kondo Hiroshi
Department Of Cardiovascular Surgery Fujita Health University
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