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  Indian J Med Microbiol
 

Figure 2: Continuous-wave Doppler of pulmonary regurgitation showing rapid downslope of regurgitant jet with a pressure halftime of 90 ms and cessation of regurgitation at 70% of diastole. Equalization of pulmonary artery and right ventricular pressures before the end of diastole due to the large volume of blood flowing back into the right ventricular leads to early jet termination in severe pulmonary regurgitation, and this is a characteristic feature on continuous-wave Doppler that differentiates it from moderate pulmonary regurgitation

Figure 2: Continuous-wave Doppler of pulmonary regurgitation showing rapid downslope of regurgitant jet with a pressure halftime of 90 ms and cessation of regurgitation at 70% of diastole. Equalization of pulmonary artery and right ventricular pressures before the end of diastole due to the large volume of blood flowing back into the right ventricular leads to early jet termination in severe pulmonary regurgitation, and this is a characteristic feature on continuous-wave Doppler that differentiates it from moderate pulmonary regurgitation