Pulmonic Regurgitation. Pulmonic Regurgitation. Incidental benign finding Pathologic PR – usually due to untreated or residual congenital PR. Acquired PR – rare. Usually due to endocarditis, carcinoid syndrome or myxomatous valve disease. Congenital Disease. Thickened deformed leaflets.
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MPAP mmHg = 80 – 0.5 x acceleration time (RVOT)
MPAP mmHg = 4(PR peak velocity)²
MPAP = 80 – 0.5 x Acceleration Time
Normal MPAP = 9 to 18 mmHg
PR – Peak Velocity
PAEDP = 4 x (PR end-diastolic velocity)2 + RAP