Non-invasive assessment of coronary flow velocity reserve: A new method using transthoracic Doppler echocardiography
| Autor: | Wang Xin-fang, Clemems von Birgelen, Yang Ya, Raimund Erbel, Holger Eggebrecht, Guido Caspari, Thomas Bartel, Loredana Latina |
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| Rok vydání: | 2002 |
| Předmět: |
Adult
Male medicine.medical_specialty Intracoronary doppler Adenosine Vasodilator Agents Biomedical Engineering Contrast Media Coronary Artery Disease Doppler echocardiography Biochemistry Flow measurement Biomaterials symbols.namesake Doppler flow Polysaccharides Predictive Value of Tests Coronary Circulation Internal medicine Genetics Humans Medicine Distal left anterior descending artery Aged Earth-Surface Processes Coronary flow medicine.diagnostic_test business.industry Non invasive Middle Aged Coronary Vessels Echocardiography Doppler symbols Cardiology Female business Doppler effect Blood Flow Velocity |
| Zdroj: | Journal of Huazhong University of Science and Technology [Medical Sciences]. 22:158-163 |
| ISSN: | 1993-1352 1672-0733 |
| Popis: | Transthoracic Doppler echocardiography (TTDE) allows noninvasive flow measurement in the distal left anterior descending artery (LAD). The feasibility of detecting coronary flow by contrast-enhanced TTDE with second harmonic technique was assessed, the coronary flow velocity reserve (CFVR) was evaluated in comparison to intracoronary Doppler flow (ICD) analysis and the CFVR after PTCA in LAD was investigated. In 77 (96%) of 80 patients, CFVR was successfully determined with intravenous adenosine infusion. Doppler signal quality was evaluated in the first 46 patients by use of intravenous Levovist infusion and second harmonic technique. The Doppler flow was not visible in 1. patient only. CFVR determined from TTDE (2.77 +/- 0.65) was correlated closely with those from ICD (2.88 +/- 0.78) measurements (y = 0.73x + 0.67, r = 0.87, P0.001). In conclusion, TTDE is a feasible method and provides reliable data on CFVR which can be used for follow-up after PTCA. |
| Databáze: | OpenAIRE |
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