[Quantification of aortic valve area using three-dimensional echocardiography]
| Autor: | José Luis Rodrigo, Sara Cioccarelli, Rocío Pérez de la Yglesia, Carlos Almería, José Luis Zamorano, Leopoldo Pérez de Isla, Viviana Serra, Ada Lia Aubele, Luis Mataix, Dionisio Herrera, Carlos Macaya |
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| Rok vydání: | 2008 |
| Předmět: |
Male
medicine.medical_specialty business.industry Echocardiography Three-Dimensional Three dimensional echocardiography General Medicine Aortic Valve Stenosis medicine.disease Area measurement Stenosis Valvular aortic stenosis Aortic valve area Internal medicine cardiovascular system medicine Cardiology Ventricular outflow tract Humans Female Radiology Linear correlation business Aged |
| Zdroj: | Revista espanola de cardiologia. 61(5) |
| ISSN: | 1579-2242 |
| Popis: | Introduction and objectives. To determine whether the reproducibility of left ventricular outflow tract (LVOT) area measurement is greater with three-dimensional echocardiographic (3D-echo) planimetry than with conventional 2D-echo. To determine the LVOT circularity index by means of 3D-echo. To determine the usefulness of measuring the LVOT area by 3D-echo for quantifying the severity of valvular aortic stenosis. Methods. The study included 40 patients, of whom 22 had an aortic stenosis. The LVOT area was measured using both 2D-echo and 3D-echo, and the circularity index, using 3D-echo alone. In addition, the severity of valvular aortic stenosis was categorized using both 2D-echo and 3D-echo. Results. The levels of inter- and intra-observer agreement on LVOT area measurements were better with 3D-echo. The circularity index was 1.50 (0.25), and there was a very poor linear correlation with LVOT area (r=‐0.34; P=.47). Patients with valvular aortic stenosis were categorized according to the severity of their stenoses using both 2D-echo and 3D-echo. The level of agreement between the 2 techniques was poor (κ=0.36). Conclusions. Measurements of the LVOT area made using 3D-echo were more reproducible than those made using 2D-echo. Consequently, 3D-echo may be a better technique for assessing the LVOT area. In addition, 3D-echo showed that the LVOT is elliptical in form and that its size is not related to its circularity. Moreover, 3D-echo could also be helpful in classifying the severity of valvular aortic stenosis. |
| Databáze: | OpenAIRE |
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