Table 2.
Ablation-naïve patients treated in Tays Heart Hospital and residing in Pirkanmaa Region, stratified by catheter ablation procedure’s one-year outcome (n = 531)
| Sinus rhythm | Failure | P value | |
|---|---|---|---|
| Age, mean (SD), year | 58.9 (9.1) | 60.7 (9.2) | 0.033 |
| Left atrial diameter, mean (SD), mm * | 40.0 (0.5) | 41.4 (0.5) | 0.002 |
| Ejection fraction, mean (SD), % * | 62.0 (7.2) | 62.2 (7.3) | 0.692 |
| Body mass index, mean (SD), kg/m2 * | 27.7 (4.2) | 28.1 (4.5) | 0.380 |
| Glomerular filtration rate, mean (SD), ml/min* | 89.0 (12.7) | 86.7 (12.3) | 0.046 |
| AAD | |||
| Used before ablation (n = 403) | 59.1% (238) | 40.9% (165) | 0.001 |
| Not in use before ablation (n = 128) | 75.0% (96) | 25.0% (32) | |
| Atrial fibrillation type* | |||
| Paroxysmal (n = 329) | 67.2% (221) | 32.8% (108) | 0.005 |
| Persistent (n = 166) | 54.2% (90) | 45.8% (76) | |
| Ablation type | |||
| Radiofrequency ablation (n = 426) | 61.3% (261) | 38.7% (165) | 0.117 |
| Cryo (n = 105) | 69.5% (73) | 30.5% (32) | |
| Sex | |||
| Male | 64.0% (222) | 36% (125) | 0.481 |
| Female | 60.9% (112) | 39.1% (72) | |
| Results over time | |||
| First period (Jan 2010–Nov 2013) | 60.6% (114) | 39.4% (74) | 0.305 |
| Second period (Dec 2013–Feb 2016) | 60.3% (91) | 39.7% (60) | |
| Third period (Mar 2016–May 2018) | 67.2% (129) | 32.8% (63) | |
| Total (n = 531) | 62.9% (334) | 37.1% (197) | |
*Data available for left atrial diameter in 525/531 (98.9%), for ejection fraction in 518/531 (97.6%), for BMI in 414/531 (78.0%), for GRF in 512/531 (96.4%) and for atrial fibrillation type in 495/531 (93.2%) of the cases