Document Detail


Clinical significance of a presystolic wave on Doppler examination of the left ventricular outflow tract.
MedLine Citation:
PMID:  25440501     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A presystolic wave (PSW) is commonly seen on Doppler examination of the left ventricular outflow tract (LVOT), but is little studied. We conducted a retrospective study to assess the prevalence of the PSW, correlations with various Doppler parameters, and its clinical significance. Two hundred echocardiograms, 100 with ejection fraction (EF) >55% and 100 with EF <45%, were reviewed. Mitral inflow velocities, septal annular velocities, LVOT, and PSW velocities were measured. Major adverse cardiovascular events (MACE [death, heart failure hospitalization, atrial fibrillation, and stroke]) were compared between those with and without a PSW, in both EF groups. Mean age was 58 ± 15 years; 56% were men and 69% were African-American. PSW prevalence was similar between normal (68%) and reduced EF groups (62%). However, its velocity was less in the low EF group (37 ± 10 vs 48 ± 16 cm/s, p <0.0001). In subjects with normal EF PSW velocity correlated with mitral A velocity (rho = 0.43, p = 0.0003). In subjects with reduced EF the association with A velocity was not significant (rho = 0.22, p = 0.09), but there was a significant association with annular a' velocity (rho = 0.38, p = 0.002). Over a mean follow-up of 1.7 ± 0.3 years, 57 subjects (28%) experienced MACE. Those without a PSW had more MACE (39% vs 23%, p = 0.02); PSW absence remained predictive of MACE after adjustment for multiple variables, especially in patients with reduced EF. In conclusion, PSW is common in the LVOT. Its presence and magnitude are associated with measures of atrial contraction. Its absence is associated with increased rates of adverse events, especially in patients with low EF.
Authors:
Kamal R Joshi; Deepa Kabirdas; Abel Romero-Corral; Mahek Shah; Vincent M Figueredo; Gregg S Pressman
Publication Detail:
Type:  Journal Article     Date:  2014-09-23
Journal Detail:
Title:  The American journal of cardiology     Volume:  114     ISSN:  1879-1913     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-12-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1599-602     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2014 Elsevier Inc. All rights reserved.
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