| Evaluation of right ventricular global longitudinal function in patients with tetralogy of fallot by two-dimensional ultrasound speckle tracking imaging. | |
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MedLine Citation:
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PMID: 20155469 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Quantification of right ventricular (RV) volume and function remains a challenge because of RV complex geometry by conventional echocardiography. The purpose of this study was to assess RV global longitudinal function in patients with tetralogy of Fallot (TOF) by 2-dimensional ultrasound speckle tracking imaging (STI). Thirty-eight patients with TOF were enrolled in this study and divided into child group (n=25) and adult group (n=13) according to age. Thirty-eight age- and sex-matched normal subjects were selected as control groups including child control group (n=25) and adult control group (n=13). RV global longitudinal peak systolic strain (GLS), strain rate (GLSR(s)), early diastolic strain rate (GLSR(e)) and late diastolic strain rate (GLSR(a)) were measured in all subjects by STI from the apical 4-chamber view and compared between groups. Furthermore, the main factors affecting the RV global longitudinal functional parameters were assessed. Compared with those in controls, RV GLS, GLSR(s) and GLSR(e) were significantly reduced in patients with TOF (P<0.05 for all). RV GLSR(s) was significantly decreased in adult patients with TOF as compared with that in child patients (P<0.05). There was no significant difference in RV GLS, GLSR(e) and GLSR(a) between child and adult TOF groups (P>0.05). The diameter of right ventricle, main pulmonary artery and ventricular septum defect had correlations with RV GLSR(s) (r ( 1 )=-0.490, r ( 2 )=0.580, r ( 3 )=-0.528, respectively, P<0.05 for all). Tricuspid annular plane peak systolic velocity (Sm) was the independent predictor of RV global strain and strain rate (beta(1)=0.355, P (1)=0.031, beta(2)=0.307, P (2)=0.021). RV global longitudinal function is decreased in patients with TOF, especially in adult patients. STI is a sensitive and accurate technique in RV global functional assessment. |
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Authors:
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Yuman Li; Mingxing Xie; Xinfang Wang; Qing Lv; Xiaofang Lu; Yali Yang; Hong Ma; Lingyun Fang; Jing Zhang; Weiqin Li |
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Publication Detail:
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Type: Journal Article Date: 2010-02-14 |
Journal Detail:
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Title: Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban Volume: 30 ISSN: 1672-0733 ISO Abbreviation: J. Huazhong Univ. Sci. Technol. Med. Sci. Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-02-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101169627 Medline TA: J Huazhong Univ Sci Technolog Med Sci Country: China |
Other Details:
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Languages: eng Pagination: 126-31 Citation Subset: IM |
Affiliation:
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Department of Ultrasonography, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. liyumsn@sina.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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