Comparison of stress-induced myocardial ischemia in patients with and without coronary arterial collaterals
| Autor: | Sripal Bangalore, Siu-Sun Yao, Farooq A. Chaudhry, Kishin Ramani, Doyle Walton, Alexander Lee, Suhail Dohad |
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| Rok vydání: | 2004 |
| Předmět: |
Male
medicine.medical_specialty Collateral Circulation Coronary Angiography Coronary circulation Coronary Circulation Dobutamine Internal medicine medicine Stress Echocardiography Humans Ejection fraction Vascular disease business.industry Coronary Stenosis Stroke Volume Stroke volume Middle Aged Collateral circulation medicine.disease Myocardial Contraction Stenosis medicine.anatomical_structure Cardiology Female Cardiology and Cardiovascular Medicine business Echocardiography Stress medicine.drug |
| Zdroj: | The American Journal of Cardiology. 94:1232-1236 |
| ISSN: | 0002-9149 |
| Popis: | Coronary artery collaterals may have a protective role against myocardial ischemia at rest. However, their role during stress is controversial and poorly defined. We evaluated 212 consecutive patients (57 +/- 16 years; 70% men) who underwent coronary angiography and stress echocardiography within a 3-month period. This cohort of patients (all had significant epicardial coronary artery disease) was divided into 3 groups based on the presence and type of collaterals: group A, no collaterals; group B, collaterals supplied by vessels without flow-limiting stenosis; and group C, collaterals supplied by vessels with flow-limiting stenosis. In all patients, angiographic jeopardy score, ejection fraction, and regional and cumulative wall motion score indexes (WMSIs) at rest and during stress were evaluated. Angiographic jeopardy scores were 2.9, 3.5, and 7.3 for groups A, B, and C, respectively. Baseline ejection fraction was similar between groups A and B (48% vs 46%, p = NS) but lower in group C (31%, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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