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Table 1 Subject characteristics

From: Factors determining exercise capacity in patients with atrial septal defect: assessment of heart function with CMR during dobutamine stress

  ASD patients Healthy controls
N 18 16
Mean age and range 51±18 35±13
Females, n (%) 13 (72) 3 (19)
BSA, m2 1.9±0.2 1.9±0.2
Peak oxygen uptake on ergospirometry (ml/min) 1795±661 3482±624
  Rest Dobutamine stress Rest Dobutamine stress
Heart rate, bpm 73±11 124±11 65±19 134±12
Cardiac output (L/min) 4.8±0.9 8.8±2.8 7.0±1.5 11.8±2.1
Shunt, QP/QS 2.2±0.8 1.6±0.6 1.0±0.1 1.0±0.1