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Figure 1 Respiratory variation in pulsed Doppler MV and PV velocities in patients with constrictive pericarditis and sinus rhythm. The MV-E velocity decreased from Exp to Insp. The MV-A velocity slightly decreased from Exp to Insp. Both of the PV-S and D velocities dramatically decreased from Exp to Insp. A = mitral inflow late filling wave; D = pulmonary venous diastolic wave; E = mitral inflow early filling wave; Exp = expiration; Insp = inspiration; MV = mitral inflow; PV = pulmonary venous flow; S = pulmonary venous systolic wave.
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