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Table 1 Patient and subgroup characteristics

From: The effects of age at correction of aortic coarctation and recurrent obstruction on adolescent patients: MRI evaluation of wall shear stress and pulse wave velocity

  Patients TAV BAV No reobstruction Reobstruction
Populations size 21 9 12 12 9
Age at reconstruction (years) 1.0 ± 1.8 1.6 ± 2.4 0.5 ± 1.1 0.5 ± 1.2 1.6 ± 2.4
Age at MRI (years) 13.7 ± 2.6 13.1 ± 2.5 14.1 ± 2.7 12.9 ± 2.9 14.7 ± 1.7
Time between reconstruction and MRI (years) 12.6 ± 3.0 11.5 ± 2.9 13.5 ± 2.8 12.3 ± 2.9 13.1 ± 3.3
Body mass index (kg/m2)a 20.3 ± 4.7 18.7 ± 1.8 21.5 ± 5.8 20.3 ± 5.8 20.3 ± 2.7
Body surface area (m2) 1.5 ± 0.3 1.5 ± 0.2 1.6 ± 0.3 1.5 ± 0.3 1.6 ± 0.3
Gender (male/female) 11/10 2/7 9/3 5/7 6/3
PWV proximal aorta (m/s) 4.8 ± 1.4 5.0 ± 1.3 4.7 ± 1.5 4.8 ± 1.7 4.9 ± 0.9
PWV descending aorta (m/s) 3.7 ± 0.8 3.75 ± 0.4 4.1 ± 1.1 3.7 ± 0.5 4.2 ± 1.2
PWV ratio 0.9 ± 0.3 0.8 ± 0.2 0.9 ± 0.3 0.9 ± 0.3 0.9 ± 0.3
Peak WSS ascending aorta (Pa) 5.3 ± 1.4 4.8 ± 1.1 5.7 ± 1.4 4.9 ± 0.9 5.9 ± 1.7
Peak WSS aortic arch (Pa) 5.0 ± 2.1 4.6 ± 2.6 5.3 ± 1.8 3.9 ± 1.3 6.5 ± 2.3
Peak WSS descending aorta (Pa) 5.7 ± 1.4 5.3 ± 1.3 6.0 ± 1.5 5.0 ± 1.3 6.7 ± 1.1
  1. Data presented as mean ± standard deviation. BAV Bicuspid aortic valve, PWV Pulse wave velocity, TAV Tricuspid aortic valve, WSS Wall shear stress
  2. aAccording to Dubois formula