Assessment of left and right ventricular rotational interdependence: A speckle tracking echocardiographic study.
Objective We sought to investigate the possible interdependence of the left (LV) and right ventricular (RV) rotational mechanics. Background Although myocardial fiber architecture and the effect of various pathologic conditions on LV torsional mechanics have already been investigated through multipl...
| Publicado en: | Echocardiography Vol. 34; no. 3; pp. 415 - 422 |
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| Autores principales: | , , , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Mar2017
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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=121744214&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121744214 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 07422822 GSE jtl: Echocardiography issn: 07422822 maglogo: Y pubinfo: dt: Mar2017 vid: 34 iid: 3 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 121744214 121744214 121744214 10.1111/echo.13452 121744214 ppf: 415 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Assessment of left and right ventricular rotational interdependence: A speckle tracking echocardiographic study. aug: au: Alizadehasl, Azin Sadeghpour, Anita Hali, Reza Bakhshandeh Abkenar, Hooman Badano, Luigi affil: Rajaie Cardiovascular Medical and Research Center, Echocardiography Research Center, Iran University of Medical Sciences, Tehran Iran sug: subj: Heart Ventricle Ventricular Function, Left Evaluation Ventricular Function, Right Evaluation Biomechanics Rotation Echocardiography, Doppler Methods Human Prospective Studies Cross Sectional Studies Cardiomyopathy, Hypertrophic Physiopathology Cardiomyopathy, Dilated Physiopathology Aortic Valve Stenosis Physiopathology Descriptive Statistics Spearman's Rank Correlation Coefficient Interrater Reliability Intrarater Reliability Data Analysis Software Wilcoxon Signed Rank Test Female Male Adult Middle Age Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Objective We sought to investigate the possible interdependence of the left (LV) and right ventricular (RV) rotational mechanics. Background Although myocardial fiber architecture and the effect of various pathologic conditions on LV torsional mechanics have already been investigated through multiple studies using different methods, there is still a significant debate about the actual presence and functional significance of RV rotational mechanics. Methods We perform a cross-sectional prospective study of 118 subjects, including 19 normal subjects (NS, 35±7 years), 34 patients with severe aortic stenosis (AS, 44±16 years), 26 patients with nonobstructive hypertrophic cardiomyopathies (HCM, 46±18), and 39 patients with nonischemic dilated cardiomyopathies (DCM, 39±13 years). LV and RV rotational parameters were measured using velocity vector imaging. Total LV and RV apical segment rotations as well as the rotation of the free wall of RV apex were measured separately. Interdependence of the LV and RV rotational mechanics was assessed using the Spearman rho test. Results Both LV (7.3°±4.1° in NS, 11°±4.6° in AS, 7.7°±5.2° in HCM, and 1.9°±2° in DCM, P=<.0001) and RV apexes (4.7°±2° in NS, 6.1°±4° in AS, 3.2°±3.7° in HCM, and 2.4°±3.6° in DCM, P=<.0001) rotated counterclockwise in all the four study groups. Interventricular apical rotation interdependence was stronger in the AS (Spearman rho [ρ]: .716; P=.000) and in the HCM (ρ: .395; P=.04) subgroups than in the NS (ρ: .26; P=.27) and DCM (ρ: .215; P=.18). In DCM patients, RV apex rotation appeared to be independent of LV rotation. RV free wall apical rotation was larger than its corresponding value for the total apical segments in all studied groups. This difference was significant only in the AS ( P=.007). Conclusion Our findings demonstrated a close correlation between RV and LV apical rotation parameters in different cardiac conditions as well as in normal subjects. However, in DCM patients, we also showed some independent rotation of the RV from the LV apex. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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