Transcatheter aortic valve implantation (TAVI).
Summary of "Transcatheter aortic valve implantation (TAVI)."
BACKGROUND:
Percutaneous transcatheter aortic valve implantation (TAVI) is a new therapeutic method for patients with severe symptomatic aortic stenosis who are at very high surgical risk or in whom there are contraindications to surgical valve replacement. PATIENTS AND
METHODS:
Between August 2008 and December 2009, sixty such patients underwent TAVI at our hospital.
RESULTS:
The mean age of the patients was 82 +/- 6.1 years, 25 of them were men. The mean "European system for cardiac operative risk" (EuroSCORE) was 25.8 +/- 17.0%. A very high surgical risk was the indication for TAVI in 51 patients. The mean aortic valve orifice area was 0.6 +/- 0.1cm (2) and the mean transvalvular gradient 48.2 +/- 14.4 mm Hg before the intervention. The mean duration of the intervention was 62.6 +/- 19.9 minutes and the screening time 11.8 +/- 5.1 minutes. The procedure was technically successful in all but one patient. The post-interventional mean transvalvular gradient was 2.87.0 mm Hg. Significant residual aortic regurgitation (more than grade 3) was present in six patients but was reduced by the catheter-based "snare" technique in most cases. Mean hospital stay was 15.4 +/- 18.9 days. A permanent pacemaker was implanted in 22 of the patients. Eight patients died during the hospital stay, most of them for reasons not directly related to the intervention.
CONCLUSIONS:
TAVI is becoming a new therapeutic method for elderly patients with severe co-morbidities and severe symptomatic aortic stenosis. Complications of TAVI are not trivial and their management by catheter techniques is challenging. In consequence the selection of patients and of suitably experienced hospitals is crucial for the further development of this promising new technique.
Affiliation
Abteilung für Kardiologie, Herzzentrum Ludwigshafen.
Journal Details
This article was published in the following journal.
Name: Deutsche medizinische Wochenschrift (1946)
ISSN: 1439-4413
Pages: 1589-1595
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20717862
- DOI: http://dx.doi.org/10.1055/s-0030-1262450
Medical and Biotech [MESH] Definitions
Aortic Valve Prolapse
The downward displacement of the cuspal or pointed end of the trileaflet AORTIC VALVE causing misalignment of the cusps. Severe valve distortion can cause leakage and allow the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to aortic regurgitation.
Aortic Valve Insufficiency
Pathological condition characterized by the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to regurgitation. It is caused by diseases of the AORTIC VALVE or its surrounding tissue (aortic root).
Discrete Subaortic Stenosis
A type of constriction that is caused by the presence of a fibrous ring (discrete type) below the AORTIC VALVE, anywhere between the aortic valve and the MITRAL VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.
Aortic Valve Stenosis
A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.
Sinus Of Valsalva
The dilatation of the aortic wall behind each of the cusps of the aortic valve.
PubMed Articles
The objective was to define the characteristics of a real-world patient population treated with transcatheter aortic valve implantation (TAVI), regardless of technology or access route, and to evaluat...
Transcatheter treatment approaches for aortic valve disease.
Transcatheter aortic valve implantation (TAVI) for the management of symptomatic aortic stenosis has evolved rapidly over the last ten years, to the point where TAVI has recently been established as t...
Registry of transcatheter aortic-valve implantation in high-risk patients.
Transcatheter aortic-valve implantation (TAVI) is an emerging intervention for the treatment of high-risk patients with severe aortic stenosis and coexisting illnesses. We report the results of a pros...
Transcatheter aortic valve implantation: current and future approaches.
The first human transcatheter aortic valve implantation (TAVI) in 2002, and several subsequent single-center series, showed the feasibility of this new approach for the treatment of patients with seve...
Valve hemodynamics and clinical outcomes among patients with a small aortic annulus who underwent transcatheter aortic valve implantation (TAVI) were examined.
Clinical Trials
Transapical Implantation of Ventor Embracer™ Valve in Patients With Severe Aortic Valve Disease
A prospective single arm study evaluating feasibility and safety of a catheter-based transapical implantation of the Ventor Embracer™ aortic valve bioprosthesis in patients with severe a...
CoreValve® System Australia/New Zealand Clinical Study
To evaluate the performance, efficacy and safety of the percutaneous implantation of the CoreValve® prosthetic aortic valve in patients with severe symptomatic native aortic valve stenosi...
Clinical Investigation Of The Mitroflow Aortic Pericardial Heart Valve
This is a trial to demonstrate the safety and effectiveness of the Mitroflow Aortic Heart Valve when used to replace a diseased or dysfunctional aortic valve or aortic valve prosthesis.
Conservative Aortic Valve Surgery for Aortic Insufficiency and Aneurysms of the Aortic Root. CAVIAAR
The primary objective of the CAVIAAR study is to prove that aortic valve sparing is associated with a 50% increase of 3 years-survival rate without increased mortality or serious increased...
The clinical investigation is designed as a prospective and non-randomised study on a maximum of 150 patients. This study will be conducted at Investigational Centres in the European Commu...
