<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Vavuranakis, Manolis</style></author><author><style face="normal" font="default" size="100%">Vrachatis, Dimitrios A</style></author><author><style face="normal" font="default" size="100%">Boudoulas, Harisios</style></author><author><style face="normal" font="default" size="100%">Papaioannou, Theodore G</style></author><author><style face="normal" font="default" size="100%">Moldovan, Carmen</style></author><author><style face="normal" font="default" size="100%">Kariori, Maria G</style></author><author><style face="normal" font="default" size="100%">Kalogeras, Konstantinos I</style></author><author><style face="normal" font="default" size="100%">Pietri, Panagiota G</style></author><author><style face="normal" font="default" size="100%">Tentolouris, Constantinos</style></author><author><style face="normal" font="default" size="100%">Stefanadis, Christodoulos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of transcatheter aortic valve implantation on the ascending aorta's elasticity.</style></title><secondary-title><style face="normal" font="default" size="100%">Clin Res Cardiol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Clin Res Cardiol</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Aged</style></keyword><keyword><style  face="normal" font="default" size="100%">Aged, 80 and over</style></keyword><keyword><style  face="normal" font="default" size="100%">Aorta</style></keyword><keyword><style  face="normal" font="default" size="100%">Aortic Valve Stenosis</style></keyword><keyword><style  face="normal" font="default" size="100%">Arterial Pressure</style></keyword><keyword><style  face="normal" font="default" size="100%">Brachial Artery</style></keyword><keyword><style  face="normal" font="default" size="100%">Cardiac Catheterization</style></keyword><keyword><style  face="normal" font="default" size="100%">Chi-Square Distribution</style></keyword><keyword><style  face="normal" font="default" size="100%">Elasticity</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Heart Valve Prosthesis Implantation</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Sphygmomanometers</style></keyword><keyword><style  face="normal" font="default" size="100%">Time Factors</style></keyword><keyword><style  face="normal" font="default" size="100%">Treatment Outcome</style></keyword><keyword><style  face="normal" font="default" size="100%">Ultrasonography</style></keyword><keyword><style  face="normal" font="default" size="100%">Vascular Stiffness</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2012 Nov</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">101</style></volume><pages><style face="normal" font="default" size="100%">895-9</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">BACKGROUND: The elastic properties of the ascending aorta were studied before and 1 week after transcatheter aortic valve implantation (TAVI). Previous studies have shown that the distensibility of the ascending aorta was decreased in the early post-operative period after aortic valve replacement. Aortic stiffness is a major moderator of arterio-ventricular coupling and an independent predictor of cardiovascular risk and mortality. We evaluated the effect of TAVI on the elastic properties of the ascending aorta in the early post-operative period.

METHODS: Aortic distensibility (AD) and Aortic Stiffness Index (ASI) were evaluated using echocardiographic techniques and brachial artery pressure obtained by sphygmomanometry 2-3 days before and 7-8 days after TAVI.

RESULTS: A total of 30 patients (14 males) were studied with a mean age of 79.9 ± 4.7 years and aortic valve area before TAVI of 0.61 ± 0.16 cm(2). Mean arterial pressure decreased significantly after TAVI (from 89.6 ± 8.9 mmHg to 83.3 ± 10.9 mmHg, p = 0.004). AD did not change significantly after TAVI (pre: 1.89 ± 1.11 cm(2)/(dynes × 10(6)), post: 2.05 ± 1.50 cm(2)/(dynes × 10(6)); p = 0.813). ASI also remained unchanged (pre: 11.4 ± 6.5, post: 15.6 ± 14.9; p = 0.349).

CONCLUSIONS: The elastic properties of the ascending aorta did not change significantly in the early post-procedural period after TAVI. This may in part be attributable to the less invasive procedure (compared to aortic valve replacement) which has no effect on vasa vasorum flow.</style></abstract><issue><style face="normal" font="default" size="100%">11</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/22588844?dopt=Abstract</style></custom1></record></records></xml>