Fig. 2From: Assessment of normal hemodynamic profile of mechanical pulmonary prosthesis by doppler echocardiography: a prospective cross-sectional studyDoppler evaluation of a prosthetic pulmonary valve. a Tracing of pulmonary prosthesis doppler illustrating mean pressure gradient (MPG), peak pressure gradient (PPG) and peak velocity (PV) of prosthesis. b Calculation of Doppler velocity index by dividing right outflow tract (RVOT) VTI to pulmonary valve VTI c Obtaining acceleration time of mechanical prosthesisBack to article page