Document Detail


Characterization of ventricular myocardial performance in the fetus by tissue Doppler imaging.
MedLine Citation:
PMID:  19276611     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Clinically useful indices of fetal cardiac function have not been fully delineated for tissue Doppler imaging (TDI). METHODS AND RESULTS: In the present study, 56 pregnancies between the 17(th) and 38(th) weeks of gestation included 38 normal fetuses, 6 cases of hydrops fetalis (HF), and 12 of intrauterine growth retardation (IUGR). Peak velocity in early diastole (E) was measured by pulsed-wave Doppler and the peak annular velocities in systole (Sa) and early diastole (Ea) were measured by TDI. The ratio between flow velocity and annular velocity in early diastole (E/Ea) and the ratio of the Sa of right ventricle to that of the left ventricle (RVSa/LVSa) were estimated. In all fetuses with HF, LVSa was <2 cm/s and LVE/Ea was >13. RVSa/LVSa in the HF group was significantly higher than that in the normal group, and RVSa/LVSa in the IUGR group was significantly lower than that in the normal group. CONCLUSIONS: A combination of low LVSa and high LVE/Ea shows reduced global myocardial performance of the LV, and would be one of the useful indices for quantitative assessment in high-risk pregnancies. Changes in the RVSa/LVSa ratio may reflect afterload changes in both ventricles and compensatory cardiovascular mechanisms occurring during the process of placental insufficiency and heart failure.
Authors:
Sayaka Watanabe; Ikuo Hashimoto; Kazuyoshi Saito; Kazuhiro Watanabe; Keiichi Hirono; Keiichiro Uese; Fukiko Ichida; Shigeru Saito; Toshio Miyawaki; Petra Niemann; David J Sahn
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-03-11
Journal Detail:
Title:  Circulation journal : official journal of the Japanese Circulation Society     Volume:  73     ISSN:  1346-9843     ISO Abbreviation:  Circ. J.     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-24     Completed Date:  2009-08-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137683     Medline TA:  Circ J     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  943-7     Citation Subset:  IM    
Affiliation:
Department of Pediatrics, School of Medicine, University of Toyama, Toyama, Japan.
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MeSH Terms
Descriptor/Qualifier:
Birth Weight
Case-Control Studies
Echocardiography, Doppler, Pulsed*
Female
Fetal Growth Retardation / physiopathology,  ultrasonography*
Fetal Heart / physiopathology,  ultrasonography*
Gestational Age
Heart Rate, Fetal
Heart Ventricles / physiopathology,  ultrasonography
Humans
Hydrops Fetalis / physiopathology,  ultrasonography*
Myocardial Contraction*
Predictive Value of Tests
Pregnancy
Ultrasonography, Prenatal / methods*
Ventricular Function, Left*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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