Usefulness of BMIPP SPECT to Evaluate Myocardial Viability, Contractile Reserve and Coronary Stenotic Progression after Reperfusion in Acute Myocardial Infarction
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概要
- 論文の詳細を見る
Using combined 123I-BMIPP (BMIPP), 201Tl (Tl) and 99mTc-PYP (PYP) myocardial SPECT imaging, risk areas of acute myocardial infarction were documented in the acute stage, and then these images were evaluated for how well they reflected muscle viability, contractile reserve and coronary stenotic progression subsequent to reperfusion therapy. Patients who only experienced a first attack of myocardial infarction were enrolled. In total, 36 cases who had had the occluded artery successfully reperfused were examined during the past year. They had no significant vessel disease except for the culprit single artery. The patients were comprised of 32 men and 4 women. The mean age was 59.5 years. All patients underwent coronary angiography and left ventricular (LV) angiography in the emergency room. BMIPP/Tl and PYP myocardial SPECT were conducted in the acute stage and chronic stage. In the chronic stage LV angiography was repeated to assess the improvement of LV wall motion. The response to postextrasystolic potentiation (PESP) testing was performed to estimate myocardial contractile reserve. The risk area of acute myocardial infarction (AMI) was documented by reduced BMIPP accumulation. The size of reduced BMIPP accumulation was larger than that of PYP accumulation. A BMIPP/Tl discrepancy and PYP accumulation were documented to assess myocardial viability. Both improvement in LV wall motion and augmentation of PESP response were more closely related to a BMIPP/Tl discrepancy in the presence or absence of PYP accumulation. Therefore, it would be possible to evaluate myocardial viability and contractile reserve by the BMIPP/Tl discrepancy. In patients with good viability, it is important to predict whether there is coronary stenotic progression or not. In this study, we demonstrated that most patients with improved BMIPP images had no significant progression at the site of intervention. Serial observation of BMIPP images from the acute stage to the chronic stage might enable us to predict the progression of coronary stenosis.
- Japanese Heart Journal Associationの論文
著者
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Izumi Tohru
北里大学
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Katsunuma Eita
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Kurokawa Shingo
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Takahashi Motoi
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Fukuda Naoto
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Kurosawa Toshiro
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Izumi Tohru
the Department of Internal Medicine and Cardiology, Kitasato University School of Medicine
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Izumi Tohru
The Department Of Hematology
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