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Table 1 Group Characteristics:

From: Progression of right ventricular dilation in repaired tetralogy of fallot

Variables Group I (n=16) Group II (n=47) p-value
ROP (ml/m2/year) ° 13.8 (5.6 to 35.8) 1.2 (-14.5 to 5.4) <0.01
Age (years) * 17.3 ± 10.3 18.1 ± 9.4 0.8
Male gender Φ 12 (75%) 23 (50%) 0.09
RV iEDV * 153 ± 49 124 ± 31 0.04
RV iESV * 77 ± 29 56 ± 19 0.01
RV EF * 50 ± 7 56 ± 7 0.01
LV iEDV * 74 ± 10 78 ± 15 0.4
PR (moderate to severe) Φ 14 (88%) 39(83%) 0.4
PS (mild+) Φ 3(19%) 14(30%) 0.2
RV outflow tract aneurysm Φ 3 (19%) 13 (28%) 0.7
QRS duration (ms) * 144 ± 28 140 ± 27 0.7
Age at surgery (years) ° 0.7 (0.1 to 9.0) 1.5 (0.0 to 7.5) 0.4
Time since surgery (years) * 15.1 ± 8.8 14.5 ± 7.2 0.8
Time between CMR's (years) * 2.2 ± 1.9 3.8 ± 1.9 <0.01
  1. * Mean ± SD; ° Median (range) ; Φ Number (percentage) Abbreviations: EF - ejection fraction, iESV - indexed end-systolic volume, LV - left ventricle, PR - pulmonary regurgitation, PS - pulmonary stenosis, TR - tricuspid regurgitation