Document Detail

Normal left ventricular mechanical function and synchrony values by speckle-tracking echocardiography in the transplanted heart with normal ejection fraction.
MedLine Citation:
PMID:  21193327     Owner:  NLM     Status:  Publisher    
BACKGROUND: The purpose of this study was to describe the normal values for strain (S), systolic strain rate (SRs) and synchrony by speckle-tracking echocardiography (STE) in heart transplant (HTx) recipients who had normal left ventricular ejection fraction (LVEF) and no clinically significant complications. METHODS: We evaluated S and SRs in 40 HTx patients at 1 year after transplant and 82 healthy controls with STE using velocity vector imaging. RESULTS: Mean (SD) global longitudinal S and SRs, respectively, were lower in the transplant group compared with controls [-13.43% (2.39%) vs -17.28% (2.30%), p < 0.001; -0.83 (0.15) s(-1) vs -0.96 (0.13) s(-1), p < 0.001]. These variables were good for differentiating between groups: area under the curve was 0.88 for S and 0.73 for SRs. The differences remained significant after adjustment for other clinical variables. Global circumferential S and SRs were similar between groups. The standard deviation of the global longitudinal S time to peak of the 16 segments for HTx and control groups, respectively, was 41.67 (13.53) milliseconds vs 32.57 (12.81) milliseconds (p < 0.001). With 58.2 milliseconds as a cutoff value to define left ventricular synchrony, only 3 (8%) of the HTx patients and 4 (5%) of the control subjects were above that value (p = 0.6). CONCLUSION: To our knowledge, this is the first study describing normal values for S and SRs and synchrony by STE in a HTx population with normal LVEF: longitudinal S and SRs were reduced; circumferential deformation indexes were normal; and left ventricular synchrony was preserved.
Haydar K Saleh; Hector R Villarraga; Garvan C Kane; Naveen L Pereira; Eugenia Raichlin; Yang Yu; Yuki Koshino; Sudhir S Kushwaha; Fletcher A Miller; Jae K Oh; Patricia A Pellikka
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-12-28
Journal Detail:
Title:  The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation     Volume:  -     ISSN:  1557-3117     ISO Abbreviation:  -     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2011-1-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9102703     Medline TA:  J Heart Lung Transplant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.
Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota.
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