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Aortic stenosis
Šmíd, Michal ; Rokyta, Richard (advisor) ; Rosolová, Hana (referee) ; Ošťádal, Petr (referee) ; Sovová, Eliška (referee)
Aortic annulus and ascending aorta: comparison of preoperative and periooperative measurement in patients with aortic stenosis Introduction Precise determination of the aortic annulus size constitutes an integral part of the preoperative evaluation prior to aortic valve replacement. It enables the estimation of the size of prosthesis to be implanted. Knowledge of the size of the ascending aorta is required in the preoperative analysis and monitoring of its dilation enables the precise timing of the operation. Our goal was to compare the precision of measurement of the aortic annulus and ascending aorta using magnetic resonance (MR), multidetector-row computed tomography (MDCT), transthoracic echocardiography (TTE), and transoesophageal echocardiography (TEE) in patients with degenerative aortic stenosis. Materials and Methods 15 patients (9 males and 6 females, mean age 68.8 + 7,1 years,) indicated for aortic valve replacement due to degenerative aortic stenosis were enrolled into this prospective study. The study followed the principles established in the Declaration of Helsinki. The protocol was accepted by the local ethical board and informed consent was obtained from each patient. The study was performed in a tertiary medical centre. Preoperatively, TTE was performed in all patients, while TEE was...
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