Skip to main content

Table 2 Normal parameters of mechanical prosthesis within follow-up points

From: Assessment of normal hemodynamic profile of mechanical pulmonary prosthesis by doppler echocardiography: a prospective cross-sectional study

ParametersFirst Follow-up (1 week)Second Follow-up (4 week)P-value
 N = 108N = 69 
Peak Pressure Gradient18.51 (17.14–19.88)19.07 (16.49–22.01)0.717
Mean Pressure Gradient10.88 (9.85–11.97)11.52 (9.89–13.41)0. 526
Peak Velocity1.97 (1.89–2.05)2.02 (1.89–2.14)0.629
Pulmonary velocity acceleration time87.35 (84.49–89.97)95.97 (89.82–102.37)0.038
Doppler velocity index0.67 (0.57–0.64)0.56 (0.52–0.61)0.229
Effective Orifice Area2.98 (2.80–3.16)2.79 (2.57–2.98)0.397
Effective Orifice Area /Body surface area1.81 (1.68–1.91)1.72 (1.56–1.86)0.559
  1. Data represented as mean and 95%confidence interval