Prediction of Cardiac Events in Patients With Transient Left Ventricle Dilation on Stress Myocardial Perfusion SPECT Images
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概要
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Background The purpose of this study was to investigate cardiac events in patients with transient left ventricle (LV) dilation on stress myocardial perfusion single-photon emission computed tomography images (MPI). Methods and Results Consecutive patients (n=53, 31 males, mean age 71 years) with transient LV dilation on thallium-201 stress MPI (treadmill : 21, pharmacologic : 32) were followed for 17 months. Follow-up time was censored at the occurrence of cardiac death, congestive heart failure, acute coronary syndrome, or revascularization. Images were scored and then the summed stress score (SSS), summed rest score, and summed difference score were calculated. Cardiac death occurred in 3 patients, hospitalization occurred in 8 patients, and revascularization occurred in 20 patients. The combined cardiac event rate was 59% (76% for exercise stress vs 47% for pharmacologic stress, p=0.034). Cox regression analysis demonstrated that a combination of higher SSS and slow washout rate was the best predictor of cardiac events (hazard ratio=3.3, p=0.029). Conclusions A high cardiac event rate is associated with transient LV dilation on thallium-201 stress MPI. The event rate is particularly high for exercise stress MPI. Furthermore, a combination of the SSS and thallium-201 slow washout is the best predictor of cardiac events in patients with transient LV dilation.
- 社団法人日本循環器学会の論文
- 2005-09-20
著者
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MOROI MASAO
Division of Cardiovascular Medicine, Toho University, Ohashi Hospital
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FUKUDA Hiroshi
Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University
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Moroi Masao
Division Of Cardiovascular Medicine Toho University Medical Center Ohashi Hospital
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Fukuda Hiroshi
Division Of Cardiovascular Medicine Toho University Medical Center Ohashi Hospital
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