Zusammenfassung
Bicuspid aortic valve disease (BAV) is increasingly recognized as a disease of the entire proximal aorta including both valvular and vascular complications. The aim of our study was to assess the dimensions of the thoracic aorta using MRI in a broad spectrum of BAV and tricuspid aortic valve disease (TAV) and to define the prevalence of the dilatation of the ascending aorta (AA) a parts per ...
Zusammenfassung
Bicuspid aortic valve disease (BAV) is increasingly recognized as a disease of the entire proximal aorta including both valvular and vascular complications. The aim of our study was to assess the dimensions of the thoracic aorta using MRI in a broad spectrum of BAV and tricuspid aortic valve disease (TAV) and to define the prevalence of the dilatation of the ascending aorta (AA) a parts per thousand yen4.5 cm in severe BAV disease. MRI studies were performed on a 1.5 T scanner in a total of 195 consecutive patients with aortic valve disease. Eighty-four aortic valves were classified as BAV and 103 as TAV. In 8 patients, classification of the aortic valve was not possible due to poor image quality. Mean diameters of the AA were significantly greater in BAV compared to TAV (4.39 +/- A 0.85 Vs. 3.55 +/- A 0.47 cm, P < 0.0001), whereas no differences were observed in the mean diameters of the aortic arch. Diameters of the descending aorta were slightly smaller in BAV compared to TAV (2.45 +/- A 0.43 Vs. 2.58 +/- A 0.31 cm, P < 0.05). In BAV, AA dilatation was independent of the severity of valve dysfunction. In TAV, aortic regurgitation but not stenosis correlated weakly with AA dilatation. Prevalence of AA dilatation a parts per thousand yen4.5 cm in BAV with severe aortic stenosis and regurgitation was 38% and 41%, respectively. Dilatation of the proximal aorta is a frequent finding in BAV and independent of the severity of valve dysfunction. With respect to the high prevalence of AA dilatation a parts per thousand yen4.5 cm in BAV with severe valve dysfunction, careful assessment of the dimensions of the AA is crucial to identify patients in whom concomitant AA replacement is indicated according to current guidelines.
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