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2014 ; 14
(58
): 328-38
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Right ventricular function assessment using tissue Doppler imaging and speckle
tracking echocardiography
#MMPMID26674180
Pietrzak R
; Werner B
J Ultrason
2014[Sep]; 14
(58
): 328-38
PMID26674180
show ga
Modern echocardiographic techniques, i.e. tissue Doppler imaging and speckle
tracking echocardiography, allow for an assessment of global and regional right
ventricular function. The right ventricular myocardial performance index and
tricuspid annulus motion are used in the assessment of global right ventricular
function, whereas duration of the cardiac cycle phases and myocardial velocities
are used in the assessment of regional function. Strain and strain rate allow for
an evaluation of both regional and global myocardial function. Literature reports
provide data on the usefulness of these methods in patients with pressure and
volume overload as well as with direct myocardial damage involving the right
ventricle. In pulmonary hypertension, S' wave assessment may be used for
therapeutic efficacy evaluation. Longitudinal strain reduction indicates an
increased risk of vascular events, while an increased value of myocardial
performance index is a predictor for a survival in pulmonary hypertension. A
decreased S' wave velocity is associated with limited pulmonary vascular flow in
patients with pulmonary embolism. In patients after atrial baffle repair for
transposition of the great arteries, decreased longitudinal strain was an
independent predictor for heart failure. A statistically significant decrease in
both the S' wave as well as acceleration during isovolumic contraction were
observed in arrhythmogenic right ventricular cardiomyopathy. S' wave and global
right ventricular longitudinal strain values were lower in patients in the acute
phase of myocardial infarction involving the right ventricle compared to the
corresponding parameters in healthy individuals. In the case of tetralogy of
Fallot correction, the evaluation of S' wave velocity may prove useful in
identifying patients with reduced cardiac systolic reserve; a good correlation
was also found between the global right ventricular longitudinal strain and right
ventricular ejection fraction in MRI.
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