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Trans-catheter aortic valve implantation--early recovery of left and preservation of right ventricular function.
MedLine Citation:
PMID:  20956401     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
This study aimed to assess the early effect of trans-catheter aortic valve implantation (TAVI) on right (RV) and left ventricular (LV) function in severe aortic stenosis (AS) patients. Twenty AS patients (age 79±6 years) were examined before, one week and six weeks after TAVI using Doppler echocardiography. LV ejection fraction (EF), long-axis [mitral annular plane systolic excursion (MAPSE)] and RV long-axis [tricuspid annular plane systolic excursion (TAPSE)] function, septal radial motion were studied. Results were compared with 30 AS patients before and one week after aortic valve replacement (AVR) as well as 30 normals (reference group). Before TAVI, LVEF was reduced and E/A was higher than the reference and AVR groups (P<0.05 for all). MAPSE, TAPSE and septal motion were equally reduced in TAVI and AVR patients (P<0.05 for all). One week after the TAVI, EF increased in patients with values <50% before the procedure. In contrast, AVR resulted in reversed septal motion (P<0.001) and depressed TAPSE (P<0.001). The extent of reversed septal motion correlated with that of TAPSE in the patients group as a whole after procedures (r=0.78, P<0.001). Six weeks after TAVI, RV function remained unchanged, but LVEF increased and E/A decreased (P<0.05 for both). Thus, TAVI procedure results in significant early improvement of LV systolic and diastolic function particularly in patients with reduced EF and preserves RV systolic function.
Authors:
Ying Zhao; Per Lindqvist; Johan Nilsson; Anders Holmgren; Ulf Näslund; Michael Y Henein
Publication Detail:
Type:  Journal Article     Date:  2010-10-18
Journal Detail:
Title:  Interactive cardiovascular and thoracic surgery     Volume:  12     ISSN:  1569-9285     ISO Abbreviation:  Interact Cardiovasc Thorac Surg     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101158399     Medline TA:  Interact Cardiovasc Thorac Surg     Country:  England    
Other Details:
Languages:  eng     Pagination:  35-9     Citation Subset:  IM    
Affiliation:
Heart Centre, Umeå University, Umeå, Sweden.
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