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Table 2 Pulmonary artery dimensions and blood flow parameters in patients with PAH and healthy volunteers

From: Non-invasive evaluation of pulmonary arterial blood flow and wall shear stress in pulmonary arterial hypertension with 3D phase contrast magnetic resonance imaging

  Healthy volunteers PAH patients p value
Diameter (mm)
 MPA 13.0 ± 1.0 15.6 ± 2.5 0.038
 RPA 8.0 ± 0.7 11.7 ± 1.7 0.001
 LPA 9.1 ± 0.8 13.8 ± 7.6 0.097
Area (mm2)
 MPA 537.6 ± 94.2 780.0 ± 272.2 0.058
 RPA 233.7 ± 36.3 435.8 ± 132.2 0.003
 LPA 262.3 ± 47.0 753.3 ± 897.8 0.209
Maximum blood flow velocity (m/sec)
 MPA 0.41 ± 0.10 0.28 ± 0.09 0.019
 RPA 0.41 ± 0.15 0.22 ± 0.07 0.006
 LPA 0.32 ± 0.10 0.18 ± 0.07 0.010
Mean blood flow velocity (m/sec)
 MPA 0.10 ± 0.02 0.07 ± 0.02 0.011
 RPA 0.11 ± 0.04 0.06 ± 0.02 0.007
 LPA 0.09 ± 0.02 0.06 ± 0.05 0.249
Maximum blood flow volume (L/min)
 MPA 13.54 ± 2.83 12.74 ± 3.49 0.650
 RPA 5.87 ± 1.08 5.96 ± 1.05 0.874
 LPA 5.10 ± 1.50 4.85 ± 2.83 0.911
Mean blood flow volume (L/min)
 MPA 3.14 ± 0.77 2.78 ± 0.34 0.240
 RPA 1.53 ± 0.29 1.65 ± 0.55 0.618
 LPA 1.38 ± 0.38 1.41 ± 0.62 0.909
Stroke volume (mL)
 MPA 62.5 ± 15.6 54.9 ± 7.3 0.219
 RPA 30.5 ± 5.8 32.7 ± 10.6 0.667
 LPA 27.4 ± 7.5 27.7 ± 12.0 0.945
  1. Data are expressed as mean ± standard deviation
  2. PAH pulmonary arterial hypertension, MPA main pulmonary artery, RPA right pulmonary artery, LPA left pulmonary artery