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Figure 4 (A) Pulsed-wave Doppler recording of mitral inflow velocities with simultaneous respirometer recording in a 48-year-old man with constrictive pericarditis before pericardiectomy. Average early (E) velocity with inspiration was 0.75 m/s and increased to 1.0 m/s with expiration (33% change). (B) After pericardiectomy, late postoperative Doppler echocardiography showed restrictive diastolic filling pattern (E/A [late] = 2.6; DT = 130 ms) with no change in E velocity with respiration. DT = deceleration time; Exp = expiration; Insp = inspiration.
