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Table 3 ECG parameters comparing both groups

From: Comparison of the early cardiac electromechanical remodeling following transcatheter and surgical secundum atrial septal defect closure in adults

  Group 1 (device closure)
(n = 15)
Group 2 (surgical closure)
(n = 15)
P value
Heart rate (bpm)    
 Baseline 92 ± 10.14 93 ± 9.59 0.78
 Post closure 78 ± 6.76 78.67 ± 11.87 0.85
 Percentage of change (−) 14.68 ± 8.07 (−) 15.40 ± 8.89 0.81
P wave maximum (ms)    
 Baseline 97.33 ± 16.67 97.33 ± 12.79 0.99
 Post closure 76 ± 15.49 73.33 ± 16.32 0.65
 Percentage of change (−) 21.67 ± 9.51 (−) 24.88 ± 10.41 0.38
P wave minimum (ms)    
 Baseline 68 ± 16.56 66.67 ± 12.34 0.80
 Post closure 48.67 ± 12.45 45.33 ± 11.87 0.45
 Percentage of change (−) 27.89 ± 9.90 (−) 31.11 ± 14.93 0.49
P wave dispersion (ms)    
 Baseline 29.33 ± 10.32 32 ± 12.64 0.53
 Post closure 27.33 ± 9.61 28 ± 10.14 0.85
 Percentage of change (-) 3.67 ± 0.36 (−) 8.88 ± 3.78 0.47
QRS complex (ms)    
 Baseline 104 ± 18.82 106.67 ± 14.47 0.66
 Post closure 80 ± 18.51 86.67 ± 17.99 0.32
 Percentage of change (-) 22.84 ± 11.64 (-) 19.11 ± 10.25 0.36
QT maximum (ms)    
 Baseline 478.53 ± 36.79 470.53 ± 65.70 0.68
 Post closure 412.53 ± 38.03 405.93 ± 63.08 0.73
 Percentage of change (−) 13.63 ± 6.98 (−) 13.67 ± 6.98 0.98
QT minimum (ms)    
 Baseline 405.73 ± 41.27 389.80 ± 63.74 0.42
 Post closure 345.53 ± 71.84 345.67 ± 56.40 0.99
 Percentage of change (−) 14.99 ± 5.88 (−) 11.11 ± 6.29 0.38
QT dispersion (ms)    
 Baseline 70.33 ± 24.04 80.73 ± 30.38 0.30
 Post closure 60.26 ± 28.56 60.27 ± 28.57 0.66
 Percentage of change (−) 19.33 ± 11.28 (−) 24.98 ± 10.16 0.42
  1. P max P wave maximum, P min P wave minimum, Pd P wave dispersion, QTD QTdispersion. Data expressed as frequency (percentage), mean (SD). P value was significant if < 0.05