Transcatheter aortic valve implantation (TAVI): state of the art techniques and future perspectives.

Transcatheter aortic valve therapies are the newest established techniques for the treatment of high risk patients affected by severe symptomatic aortic valve stenosis. The transapical approach requires a left anterolateral mini-thoracotomy, whereas the transfemoral method requires an adequate peripheral vascular access and can be performed fully percutaneously. Alternatively, the trans-subclavian access has been recently proposed as a third promising approach. Depending on the technique, the fine stent-valve positioning can be performed with or without contrast injections. The transapical echo-guided stent-valve implantation without angiography (the Lausanne technique) relies entirely on transoesophageal echocardiogramme imaging for the fine stent-valve positioning and it has been proved that this technique prevents the onset of postoperative contrast-related acute kidney failure. Recent published reports have shown good hospital outcomes and short-term results after transcatheter aortic valve implantation, but there are no proven advantages in using the transfemoral or the transapical technique. In particular, the transapical series have a higher mean logistic Euroscore of 27-35%, a procedural success rate above 95% and a mean 30-day mortality between 7.5 and 17.5%, whereas the transfemoral results show a lower logistic Euroscore of 23-25.5%, a procedural success rate above 90% and a 30-day mortality of 7-10.8%. Nevertheless, further clinical trials and long-term results are mandatory to confirm this positive trend. Future perspectives in transcatheter aortic valve therapies would be the development of intravascular devices for the ablation of the diseased valve leaflets and the launch of new stent-valves with improved haemodynamic, different sizes and smaller delivery systems.

La Revue d'art : revue hebdomadaire paraissant le samedi / directeur : Maurice Méry ; administrateur : G. Chavaroux

1899/11/04 (N1)-1900/01/13 (N11).

Revue d'art (Paris. 1899)

Etat de collection : N° 1 (1899, 4 nov.)-n° 11 (1900, 13 janv.)

Revue internationale de l'art et de la curiosité / publiée sous la direction de Ernest Feydeau

Périodicité : Mensuel

Revue internationale de l'art et de la curiosité / publiée sous la direction de Ernest Feydeau

1870/01/15 (T3,N1)-1870/06/15 (T3,N6).

Revue internationale de l'art et de la curiosité / publiée sous la direction de Ernest Feydeau

1869/07/15 (T2,N1)-1869/12/15 (T2,N6).

Revue internationale de l'art et de la curiosité / publiée sous la direction de Ernest Feydeau

1870/07/15 (T4,N1)-1870/08/15 (T4,N2).

Revue internationale de l'art et de la curiosité / publiée sous la direction de Ernest Feydeau

1869/01/15 (N1)-1869/06/15 (N6).

Les Semailles : revue mensuelle de sociologie et d'art

1902/01/15 (A2,N1)-1902/02/15 (A2,N2).

Les Semailles : revue mensuelle de sociologie et d'art

1901/03/15 (A1,N1)-1901/12/15 (A1,N10).

Le Thyrse : recueil mensuel de philosophie, art et littérature

1897/03-1897/10 (T2,N1).

Sciences appliquées à l'art militaire : chemins de fer, télégraphie électrique et optique, téléphonie, pigeons voyageurs, aérostation, ponts militaires, routes militaires

Collection : Encyclopédie théorique et pratique des connaissances civiles et militaires ; partie 2, livre 6