Usefulness of a Novel Ultrasound Transducer for Continuous Monitoring Treadmill Exercise Echocardiography to Assess Coronary Artery Disease
| Autor: | Takeshi Uemura, Yutaka Otsuji, Akira Kisanuki, Shuichi Hamasaki, Shiro Yoshifuku, Naoko Mizukami, Shinichi Minagoe, Kenichi Nakashiki, Toshinori Yuasa, Chuwa Tei, Bo Yu, Kunitsugu Takasaki, Eiji Kuwahara |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Systole Wall motion score index Transducers Treadmill exercise Coronary Artery Disease Sensitivity and Specificity Coronary artery disease Electrocardiography Ventricular Dysfunction Left Diastole Internal medicine medicine Stress Echocardiography Humans Aged Peak exercise medicine.diagnostic_test business.industry Continuous monitoring Equipment Design General Medicine Middle Aged medicine.disease Echocardiography Exercise Test Cardiology Feasibility Studies Female Ultrasonic sensor Cardiology and Cardiovascular Medicine business |
| Zdroj: | Circulation Journal. 70:1297-1302 |
| ISSN: | 1347-4820 1346-9843 |
| DOI: | 10.1253/circj.70.1297 |
| Popis: | Background The feasibility of a novel ultrasound probe, which can be attached to the left ventricular (LV) apex chest wall and allows free rotation around its long axis direction for the continuous monitoring of LV wall motion, was tested. Methods and Results There were 36 subjects who had coronary artery disease (CAD). By attaching a novel ultrasound probe to the chest wall, the LV apical views were recorded during treadmill exercise stress echocardiography (Echo). The continuous monitoring of LV wall motion was satisfactorily feasible in 30 of 36 patients. The visualization rate of the overall LV segments was higher at rest (90%) compared to that during peak exercise (77%). The segments were better visualized in apical portions (90-100%) than in mid (77-96%) or basal portions (68-87%). The sensitivity, specificity, and accuracy for detecting CAD were 61, 100 and 77%, respectively. The wall motion score index 3 and 6 min after exercise decreased significantly compared to those at peak exercise. The number of segments with dyssynergy was highest at the peak exercise. Ischemic ST-T depression on electrocardiography was observed only at peak stress periods. Conclusions Continuous monitoring treadmill exercise Echo using a novel ultrasound probe seems feasible for the non-invasive and physiological assessment of CAD. (Circ J 2006; 70: 1297 - 1302) |
| Databáze: | OpenAIRE |
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