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(A) Severe dilation and pressure overload of the right ventricle on TTE in short-axis view (1) and four-chamber view (2) associated with high PASP derived by the maximum tricuspid regurgitation velocity (Vmax, red arrow) with continuous-wave Doppler (3). (B) Normalization of RV dimension in both short-axis view (1) and four-chamber view (2) with normal PASP (red arrow shows the tricuspid Vmax) (3) after vitamin C supplementation.
