Skip to main content

Table 4 Echocardiographic and ECG data between the two groups 3, 6, and 12 months after operation

From: Comparison of modified MAZE with minimally invasive monopolar ablation and traditional bipolar radiofrequency ablation in the treatment of atrial fibrillation

 mi-MAZE(n = 40)os-MAZE(n = 62)P value
3 months after operation
 sinus rhythm, n (%)31(77.5)44(71.0)0.465a
cardiac ultrasonography, mean ± SD
  LAD(mm)41.5 ± 7.3944.4 ± 5.840.069b
  LVDs(mm)33.4 ± 5.1431.7 ± 3.780.170b
  LVDd(mm)48.0 ± 3.4946.2 ± 4.430.055c
  LVEF(%)60.1 ± 6.1662.7 ± 5.520.293b
 SF-36, mean ± SD120.2 ± 8.10110.6 ± 6.580.000b
6 months after operation
 sinus rhythm, n (%)30(75.0)42(67.7)0.266a
 cardiac ultrasonography, mean ± SD
  LAD(mm)40.1 ± 3.8944.4 ± 4.950.001b
  LVDs(mm)33.8 ± 3.4630.8 ± 3.720.010b
  LVDd(mm)48.6 ± 3.4649.4 ± 3.560.318c
  LVEF(%)61.6 ± 4.0362.8 ± 4.220.182c
 SF-36, mean ± SD121.4 ± 7.58113.2 ± 5.360.000b
12 months after operation
 sinus rhythm, n (%)31(77.5)42(67.7)0.164a
 cardiac ultrasonography, mean ± SD
  LAD(mm)41.9 ± 5.3544.8 ± 4.670.070b
  LVDs(mm)32.1 ± 3.5730.6 ± 2.980.182b
  LVDd(mm)49.1 ± 3.3850.1 ± 3.030.129c
  LVEF(%)64.2 ± 5.5363.3 ± 4.290.347c
 SF-36, mean ± SD123.5 ± 6.09119.3 ± 6.250.028b
  1. Abbreviations LAD Left atrial diameter, LVDd Left ventricular diastolic diameter, LVDs Left ventricular systolic diameter, LVEF Left ventricular ejection fraction, SF-36 Short form 36 questionnaire
  2. aPearson’s test
  3. bKolmogorov-Smirnov test
  4. cStudent T test