2016年4月4日 · It is more challenging to quantify para-valvular versus valvular aortic regurgitation. A. Have abnormal prosthetic valve function. C. Have a small valve compared to the demands of their body and cardiac output. D. Have a benign condition. Mechanical Vs. Bioprosthetic Vs. Autografts. Mechanical Vs. Bioprosthetic Flow.

It is more challenging to quantify para‐valvular versus valvular aortic regurgitation. A. Have abnormal prosthetic valve function. C. Have a small valve compared to the demands of their body and cardiac output. D. Have a benign condition. Mechanical Vs. …

This guideline discusses the role of advanced imaging with transesophageal echocardiography, cardiac computed tomography, and cardiac magnetic resonance in evaluating prosthetic valve structure, function, and regurgitation.

This week we will review the key points for imaging and interpreting prosthetic aortic valve stenosis with echocardiography. Prosthetic Aortic Valve Stenosis: Key Imaging Points. Imaging the heart status post valve repair can be challenging, especially due to the artifact caused by some prosthetic valves.

2021年6月30日 · Significant aortic BPV stenosis was defined as peak prosthetic jet velocity >4 m/s, mean gradient >35 mmHg, EOA <0.8 cm², and DVI <0.25 [8]. The European Association for Cardiovascular Imaging (EACVI) suggests incorporating an increase in mean gradient at follow-up: possible obstruction with an increase in mean gradient of 10-19 mmHg ...

Of 68 patients dying within two months of aortic valve replacement, death in ten, each of whom had had intractable low cardiac output after operation, was attributed at necropsy to prosthetic aortic stenosis, despite the use of small sized (8A Starr-Edwards) prostheses in seven of them.

In this pictorial review, we present a series of common prosthetic aortic valve complications imaged with cardiac CT and demonstrate how use of this modality can enhance diagnostic accuracy.

2016年10月19日 · This chapter will review the valve design and types, causes of prosthetic aortic valve stenosis, approach to evaluate patients with elevated trans-aortic prosthesis gradient, as well as the complimentary role of CT and MRI.

2024年11月30日 · Summarizes new echo criteria and thresholds for prosthetic heart valve (PHV) stenosis and regurgitation. Emphasizes core practices when assessing PHVs. Highlights expanded normal echo valves for contemporary PHVs in all positions.

2023年8月2日 · Transcatheter aortic valve replacement (TAVR) is a minimally invasive procedure for treating patients with symptomatic severe aortic stenosis (AS). It involves deploying a prosthetic valve using a catheter and serves as an alternative to open-heart surgical aortic valve replacement (SAVR).