Evaluation of Regional Myocardial Function by Doppler Tissue Imaging in Univentricular Heart after Successful Fontan Repair.
Background: The univentricular heart (UVH) corrected by Fontan repair is characterized by a single dilated pumping chamber, which is both hypertrophic and hypocontractile. The complex geometrical distortion and asynchronous contraction of this organ prevents assessment of systolic and diastolic func...
| Publicado en: | Echocardiography Vol. 27; no. 6; pp. 702 - 709 |
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| Autores principales: | , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Jul2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104844334&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104844334 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 07422822 GSE jtl: Echocardiography issn: 07422822 maglogo: Y pubinfo: dt: Jul2010 vid: 27 iid: 6 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 104844334 59305842 10.1111/j.1540-8175.2009.01085.x NLM20653762 104844334 ppf: 702 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Evaluation of Regional Myocardial Function by Doppler Tissue Imaging in Univentricular Heart after Successful Fontan Repair. aug: au: Bassareo, Pier Paolo Tumbarello, Roberto Piras, Alessandra Mercuro, Giuseppe affil: Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy sug: subj: Heart Defects, Congenital Surgery Echocardiography, Doppler Myocardium Physiology Human Male Female Child Adolescence Adult Descriptive Statistics Mann-Whitney U Test Univariate Statistics P-Value Data Analysis, Statistical Data Analysis Software Pilot Studies Child: 6-12 years Adolescent: 13-18 years Adult: 19-44 years Male Female ab: Background: The univentricular heart (UVH) corrected by Fontan repair is characterized by a single dilated pumping chamber, which is both hypertrophic and hypocontractile. The complex geometrical distortion and asynchronous contraction of this organ prevents assessment of systolic and diastolic function by traditional echocardiographic procedures. Methods: Sixteen children (10 males, 6 females) aged 12-31 years, who had undergone UVH Fontan repair were enrolled in the study. A transthoracic echocardiography was performed. Twelve different myocardial wall segments from single ventricles were studied by Doppler tissue imaging to measure peak systolic velocity (S), isovolumetric relaxation time (IRT), isovolumetric contraction time (ICT), and E′/A′ ratio. Results: S and E′/A′ ratio were significantly lower in the UVH group than in controls (P < 0.01 and P < 0.05, respectively). IRT and ICT were significantly longer in UVH than in controls (P < 0.001 and P < 0.005, respectively). In the UVH, both systolic and diastolic deficits were generally registered in the apical segments and also randomly distributed between the basal and middle segments of the single ventricle. Conclusions: It is an acknowledged fact that compared to normal children ventricular function is impaired in patients with UVH. Tissue Doppler imaging at multiple points of the single ventricle provides a complete, accurate assessment of systolic and diastolic function after Fontan repair, overcoming problems posed by geometrical distortion and limitations of conventional echocardiographic methods. (Echocardiography 2010;27:702-708) pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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