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Value of Speckle Tracking for the Assessment of Right Ventricular Function in Patients Operated on for Tetralogy of Fallot. Comparison with Magnetic Resonance Imaging
Author(s) -
Bernard Yvette,
Morel Mathilde,
DescotesGe Vincent,
Jehl Jerome,
Meneveau Nicolas,
Schiele Francois
Publication year - 2014
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.12386
Subject(s) - tetralogy of fallot , ejection fraction , cardiology , medicine , magnetic resonance imaging , ventricle , reproducibility , cardiac magnetic resonance imaging , diastole , speckle tracking echocardiography , doppler imaging , strain (injury) , heart failure , radiology , heart disease , mathematics , blood pressure , statistics
Background Right ventricular (RV) function is a major prognostic factor in patients (pts) with operated tetralogy of Fallot (TOF). We compared the results of RV speckle tracking (two‐dimensional [2D] strain) with those of magnetic resonance imaging (MRI) in this setting. Methods At transthoracic echocardiogram (echo), RV fractional area change (RVFAC), tricuspid annular plane systolic excursion (TAPSE), velocity of S‐wave at tricuspid annulus with tissue Doppler, and 2D strain (longitudinal maximal systolic strain) were recorded. Their results were compared to RV indexed end‐diastolic volume (EDV), indexed end‐systolic volume (ESV), and RV ejection fraction (EF) at MRI. Results Twenty‐two pts (16 M) aged 11–62 years (mean 23.2 ± 10.8) were included. Parameters of RV systolic function were as follows: RVFAC = 40 ± 10%, TAPSE = 18 ± 4 mm, S‐wave = 10 ± 0.2 cm/sec, and RV EF at MRI = 43 ± 11%. Global RV systolic strain was −15.5 ± 4.2%, free wall strain was −15.1 ± 6.3%, and septal strain was −15.8 ± 3.8% on average for the whole group. Echo indexed RV end‐diastolic area correlated with EDV at MRI (r = 0.73), as well as echo indexed RV end‐systolic area and ESV at MRI (r = 0.71). Global RV 2D strain correlated well with RV EF at MRI: r = 0.68; P < 0.05, and with ESV at MRI: r = 0.63. Feasibility, intra‐ and inter‐observer reproducibility of 2D strain were adequate. Conclusions Speckle tracking is a promising method to estimate RV systolic function in pts operated on for TOF.