Table 3.
Baseline and electrical characteristics of the patients with high (>70 Ω) and low (<70 Ω) impedance.
| Success Group | Impedance < 70 Ω n = 421 |
Impedance > 70 Ω n = 216 |
p-Value |
|---|---|---|---|
| Age (years) | 59 ± 11 | 59 ± 11 | 0.733 |
| Sex, male (%) | 383 (91) | 137 (63) | <0.001 |
| BMI (kg/m2) | 25 ± 3 | 27 ± 4 | <0.001 |
| BSA (m2) | 1.8 ± 0.1 | 1.8 ± 0.1 | 0.971 |
| Hypertension (%) | 137 (30) | 82 (37) | 0.036 |
| Diabetes mellitus (%) | 33 (7) | 23 (10) | 0.102 |
| Thyroid disease (%) | 36 (8) | 24 (11) | 0.125 |
| Chronic lung disease (%) | 7 (2) | 4 (2) | 0.504 |
| Valvular disease (%) | 23 (5) | 13 (6) | 0.379 |
| Chronic kidney disease (%) | 10 (2) | 4 (2) | 0.502 |
| Cerebrovascular accident (%) | 24 (5) | 11 (5) | 0.526 |
| Coronary artery disease (%) | 12 (3) | 14 (6) | 0.030 |
| Additional AAD to restore SR (%) | 56 (12) | 13 (6) | 0.010 |
| LAD (mm) | 44 ± 6 | 46 ± 12 | 0.023 |
| LVMI (g/m2) | 97 ± 25 | 93 ± 25 | 0.063 |
| LV EF (%) | 52 ± 9 | 53 ± 8 | 0.245 |
| Electrical current (mA) | 23 ± 18 | 18 ± 5 | <0.001 |
| Total energy for restoring SR (J) | 165 ± 174 | 186 ± 216 | 0.187 |
| Number of shocks (n) | 1.6 ± 1 | 1.8 ± 1 | 0.085 |
BMI—body mass index; BSA—body surface area; AAD—antiarrhythmic drug; LAD—left atrial diameter; LVMI—left ventricular mass index; LV EF—left ventricular ejection fraction; SR—sinus rhythm.