| Japanese |
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| Title | Dipyridamole負荷心筋シンチグラフィによるACバイパス術後評価 |
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| Subtitle | 原著 |
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| Authors | 浜重直久*, 土居義典*, 米沢嘉啓*, 小田原弘明*, 小沢利男*, 赤木直樹**, 吉田祥二**, 前田知穂** |
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| Organization | *高知医科大学老年病科, **放射線科 |
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| Journal | 核医学 |
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| Volume | 23 |
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| Number | 12 |
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| Page | 1683-1691 |
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| Year/Month | 1986/12 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」ACバイパス患者20例に, dipyridamol 0.568mg/kg静注と足踏み負荷による心筋シンチグラフィを, 術前および術後早期に施行し, その有用性を検討した. 固定性欠損像は, 術前9例(45%)・術後10例(50%)にみられた. 術後の4例(20%)では新たな部位の欠損像を認め術中梗塞と診断したが, うち2例は心電図上異常Q波を欠如する側壁梗塞であった. 可逆性欠損像は, 術前15例(75%)・術後4例(20%)に認められた. 術後の4例中, 2例はグラフトの閉塞部に, 他の2例は不完全血行再建例の非バイパス部に欠損像を示した. さらに, 術前後の同一負荷直後の心筋各部のuptakeを比較することにより, バイパス術による局所心筋血流の変化を客観的に評価することが可能であった. 以上, dipyridamole負荷心筋シンチグラフィは, 術後運動負荷の制限される比較的早期に, 術前と同等の負荷が可能であり, バイパス術後の血流状態の早期評価に有用である. |
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| Practice | 臨床医学：一般 |
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| Keywords | 201Thallium scintigraphy, Dipyridamole, Aortocoronary bypass surgery, Segmental myocardial perfusion. |
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| English |
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| Title | Dipyridamole-loading Myocardial Scintigraphy for the Evaluation of Patients after Aortocoronary Bypass Surgery |
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| Subtitle | Original Articles |
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| Authors | Naohisa HAMASHIGE*, Yoshinori DOI*, Yoshihiro YONEZAWA*, Hiroaki ODAWARA*, Toshio OZAWA*, Naoki AKAGI**, Shoji YOSHIDA**, Tomoho MAEDA** |
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| Authors(kana) | |
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| Organization | *Department of Medicine and Geriatrics, **Department of Radiology, Kochi Medical School |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 23 |
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| Number | 12 |
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| Page | 1683-1691 |
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| Year/Month | 1986/12 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Twenty patients were studied before and early after aortocoronary bypass surgery by dipyridamole-loading myocardial scintigraphy. Fixed defect was detected in 9 patients (45%) preoperatively, and in 10 (50%) postoperatively. Newly developed fixed defect, suggestive of perioperative myocardial infarction, was observed in 4 patients (20 %), 2 of them were not diagnosed by ECG. Reversible defect was detected in 15 patients (75%) preoperatively, and in 4 (20%) postoperatively. These postoperative reversible defects were due to either graft occlusion or incomplete revascularization. Postoperative change in segmental myocardial perfusion was also evaluated using circumferential profile curve at 45°LAO view. Improvement was noted postoperatively in 24 (83%) of 29 areas with patent graft by x-ray computed tomography and 6 (75%) of 8 areas without significant lesion. No residual ischemia was present in these areas. Improved uptake was not detected in 4 (50%) of 8 areas with unopacified graft and 8 (53 %) of 15 areas with significant lesion but without graft. A new fixed defect or residual ischemia was present in 7 (30%) of these 23 areas. In conclusion, dipyridamole-loading myocardial scintigraphy is a safe and useful method not only for the detection of perioperative infarction or residual ischemia, but for the evaluation of the postoperative change in segmental myocardial perfusion, particularly in early postoperative patients in whom exercise ECG or exercise scintigraphy is limited. |
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| Practice | Clinical medicine |
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| Keywords | 201Thallium scintigraphy, Dipyridamole, Aortocoronary bypass surgery, Segmental myocardial perfusion. |
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