The Comparison of Tricuspid Inflow in Parasternal Short Axis Versus Apical Four Chambers View from Transthoracic Echocardiography
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Abstract
BACKGROUND: Tricuspid inflow is a transthoracic echocardiographic TTE parameter used to describe the diastolic function of the right ventricle, which is related to the pressure and volume of venous blood entering the right side of the heart. It can be measured in the standard apical four-chambers view, A4C, and in the parasternal short-axis view at the level of the aortic valves, PSX. However, there have been no studies carried out to compare the values obtained from both angles view.
OBJECTIVE: The aim of this study was to compare tricuspid inflow from the A4C view versus that from the PSX view.
METHODS: In this retrospective study, TTE imaging data measuring tricuspid inflow, consisting of peak E wave velocity, peak A wave velocity, E duration, A duration, and the TV E/A ratio in PSX and A4C, were compared using a t-test and the Wilcoxon signed-rank test.
RESULTS: Of 60 children aged 4-15 years, 46% were male and 54% were female. It was found that the TV E/A ratio values measured from the PSX view and the A4C view were not different (1.48±0.46 VS. 1.43±0.40, p=0.48). However, it was found that the peak E velocity and peak A velocity values at the PSX view were higher than the values measured at the A4C view (peak E velocity=75.5±15.2 VS 66.8±16.8 cm/s, p<0.05) (peak A velocity=52.9±11.6 VS 48.6±12.5 cm/s, p<0.01).
CONCLUSION: RV diastolic function measured using the E/A ratio from tricuspid inflow from the PSX view was no different from that measured from the A4C view.
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