Echocardiographic assessment of right ventricular function by two-dimensional strain in patients with left-sided valvular heart disease: comparison whit three-dimendional echocardiography / Avaliação ecocardiográfica da função ventricular direita por strain bidimensional em pacientes com valvopatia à esquerda: comparação com ecocardiografia tridimensional
Int. j. cardiovasc. sci. (Impr.)
;
31(6): 630-642, nov.- dez. 2018. ilus, tab, graf
Article
Dans Anglais
| LILACS
| ID: biblio-979931
ABSTRACT
Background:
Right ventricular (RV) dysfunction is a well-known predictor of mortality in patients with valvular heart disease (VHD). The assessment of RV function is often difficult due to complex geometry and hemodynamic factors.Objective:
We aim to analyze RV function in patients with severe mitral and/or aortic valve disease using two-dimensional strain (2DS) imaging and conventional echocardiographic parameters, comparing it with right ventricular ejection fraction (RVEF) measured by three-dimensional echocardiography (3DE).Methods:
Fifty-three patients with severe mitral and/or aortic VHD underwent complete transthoracic echocardiogram in the preoperative setting for cardiac surgery, including conventional echocardiographic parameters of RV function and speckle-tracking derived 2DS indices RV global longitudinal strain (RVGS) and RV free wall longitudinal strain (RVFWS). Conventional echocardiographic and 2DS parameters were compared with real-time 3DE RVEF using Spearman correlation test. For comparison between two groups of patients based on the presence of RV dysfunction (normal RVEF ≥ 44% - A, abnormal RVEF < 44% - B), we used nonparametric Mann-Whitney U test. ROC (receiver operating characteristic) curve analysis was used to assess the clinical utility of all RV function variables in defining RV dysfunction. P values <0,05 were considered statistically significant.Results:
We found a significant correlation between all parameters and RVEF (p<0.05), with best results for RV fractional area change (FAC), RVGS, and RVFWS. Dividing the population into two-groups based on RVEF, we found 14 patients with RV dysfunction (27.4%), and significant differences between the groups for all RV function variables. For detection of RV dysfunction defined by 3DE, ROC curve analysis showed the best area under the curve (AUC) for RVGS (0.872), RVFWS (0.851) and FAC (0.932).Conclusions:
We observed significant correlation between RVGS, RVFWS and RVEF, with good accuracy in detecting RV dysfunction, comparable to FAC and better than other conventional parameters of RV function assessment. The evaluation of RV myocardial deformation with 2DS may have additional diagnostic and prognostic value in patients with severe left-sided VHD
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Échocardiographie
/
Dysfonction ventriculaire droite
/
Valvulopathies
Type d'étude:
Etude diagnostique
/
Etude d'étiologie
/
Étude pronostique
/
Facteurs de risque
Limites du sujet:
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Int. j. cardiovasc. sci. (Impr.)
Thème du journal:
Cardiologie
Année:
2018
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Instituto Nacional de Cardiologia/BR
/
Instituto Nacional do Cardiologia/BR
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