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Table 1 Demographics and flow quantification of PAH study patients

From: Wall shear stress measured by phase contrast cardiovascular magnetic resonance in children and adolescents with pulmonary arterial hypertension

  Control (n = 4) PAH (n = 25) P
Age, (y) 19 ± 12 12 ± 5 0.3
Sex, (M:F) 2:2 11:14  
BSA (m 2 ) 1.7 ± 0.7 1.2 ± 0.3 0.14
RPA diam (cm) 1.2 ± 0.5 1.8 ± 0.7 0.19
RPA/ BSA (cm/m 2 ) 0.7 ± 0.1 1.5 ± 0.4 0.003
RAC (%) 32 ± 18 21 ± 11 0.15
Vmean t_ avg (cm/s) 30 ± 12 17 ± 11 0.05
V mean systole (cm/s) 83 ± 23 58 ± 34 0.07
Q avg (L/min) 2.6 ± 1.2 2.4 ± 1.0 0.55
Qsys (L/min) 9.0 ± 4.4 8.9 ± 3.7 0.68
V max (m/s) 1.3 ± 0.7 0.8 ± 0.5 0.14
RF(%) 0.9 ± 0.9 1.1 ± 2.0 0.47
WSS t_avg (dyne/cm2) −6.6 ± 3.4 −2.2 ± 1.6 0.018
  1. Values are mean ± SD; PAH = pulmonary arterial hypertension; BSA = body surface area (m2); RPA = right pulmonary artery diameter (cm); RPA/BSA = normalized RPA diameter (cm/m2); RAC = Relative Area Change (%); Vmeant_avg = time-averaged mean velocity over vessel cross-section; Vmeansystole = systolic mean velocity over vessel cross-section; Qavg = average flow rate (L/min); Qsys = peak systolic flow rate (L/min); RF = regurgitant fraction (%); Vmax = max velocity (m/s); WSSt_avg = circumferentially averaged WSS over cardiac cycle.