Publications by authors named "Claudia Busch-Tilge"
Pressure recovery (PR) is essential part of the post stenotic fluid mechanics and depends on the ratio of EOA/A, the effective aortic valve orifice area (EOA) and aortic cross-sectional area (A). In patients with advanced ascending aortic aneurysm and mildly diseased aortic valves, the effect of A on pressure recovery and corresponding functional aortic valve opening area (ELCO) was evaluated before and after valve-sparing surgery (Dacron graft implantation). 66 Patients with ascending aortic aneurysm (mean aortic diameter 57 +/- 10 mm) and aortic valve-sparing surgery (32 reimplantation technique (David), 34 remodeling technique (Yacoub)) were routinely investigated by Doppler echocardiography.
View Article and Find Full Text PDFBackground: The importance of pulmonary artery pressure recovery (PR) in patients with Ross procedures in whom a homograft substitutes the resected pulmonary valve, is unknown. The aim of the study was to evaluate the occurrence and extent of PR in the pulmonary artery in 65 asymptomatic patients with pulmonary homograft after Ross surgery during rest and exercise.
Methods: Stress echocardiography was performed in 65 pulmonary homograft patients and 31 controls with native pulmonary valves up to 75 W.
Article Synopsis
- Relevant pressure recovery (PR) improves aortic valve function and reduces left ventricular load, but its significance in the pulmonary artery post-Ross surgery was less understood.
- A study of 92 patients using Doppler echocardiography revealed that increased pulmonary artery diameter is associated with a decrease in PR, which significantly increased the effective orifice area of the homograft and decreased both homograft resistance and transvalvular stroke work.
- Findings indicated that not accounting for PR can lead to overestimating homograft stenosis severity, misclassifying patients' conditions, and potentially resulting in unnecessary surgical interventions.