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Table 2 Diagnostic testing results pre- and post-PVR (n = 36)

From: Impact of surgical pulmonary valve replacement on ventricular strain and synchrony in patients with repaired tetralogy of Fallot: a cardiovascular magnetic resonance feature tracking study

Parameter Pre-PVR Post-PVR P-value
Electrocardiogram
 QRS duration (ms) 153 ± 38 152 ± 39 0.99
Exercise Testing
 Peak VO2 (ml/kg/min) 26 ± 9 25 ± 8 0.31
Echocardiography
  ≤ Mild tricuspid regurgitation 33 35  
  ≥ Moderate tricuspid regurgitation 3 1  
 RV systolic pressure by tricuspid regurgitation jet velocity 35 ± 15 25 ± 7 0.009
CMR
 Heart rate 75 ± 11 73 ± 13 0.38
 LV EDVi (ml/m2) 88 ± 17 93 ± 17 0.01
 LV ESVi (ml/m2) 37 ± 10 40 ± 12 0.02
 LV ejection fraction (%) 58 ± 8 57 ± 7 0.35
 RV EDVi (ml/m2) 194 ± 34 119 ± 16 < 0.001
 RV ESVi (ml/m2) 100 ± 24 65 ± 16 < 0.001
 RV ejection fraction (%) 49 ± 7 46 ± 7 0.02
 Pulmonary regurgitation fraction (%) 48 ± 10 4 ± 5 < 0.0001
  1. EDV end-diastolic volume, ESV end-systolic volume, LV left ventricular, PVR pulmonary valve replacement, RV right ventricular