Table 4.
Predictors of arrhythmia recurrence
| Variable | Univariable
|
Multivariable
|
||
|---|---|---|---|---|
| HR (95% CI) | P | HR (95% CI) | P | |
| Age (per decade increase) | 2.43 (0.24–3.4) | .16 | … | … |
| Class I agents* (>3 months after cardioversion) | 0.73 (0.64–1.29) | .39 | … | … |
| Class III agents (>3 months after cardioversion) | 0.96 (0.31–3.63) | .43 | … | … |
| Digoxin (>3 months after cardioversion) | 1.75 (0.53–3.71) | .19 | … | … |
| Fontan physiology | 3.86 (1.32–6.88) | <.001 | 2.16 (1.24–4.35) | <.001 |
| Non-Fontan single-ventricle physiology | 1.44 (0.73–3.65) | .19 | … | … |
| Prior Mustard procedure | 2.16 (1.18–4.54) | .02 | 1.76 (0.64–2.19) | .17 |
| Functional class III or IV | 2.43 (0.89–6.11) | .48 | … | … |
| Atrial fibrillation | 3.12 (1.65–5.32) | .01 | 1.71 (1.18–3.61) | .03 |
| Spontaneous echocardiographic contrast | 1.31 (0.72–1.98) | .15 | … | … |
| Moderate-severe right atrial enlargement | 1.42 (0.63–2.44) | .15 | … | … |
| Moderate-severe left atrial enlargement | 1.01 (0.22–4.12) | .71 | … | … |
| Moderate-severe systemic ventricular dysfunction | 2.66 (1.53–3.34) | .001 | 1.96 (0.84–3.44) | .42 |
| Moderate-severe nonsystemic ventricular dysfunction | 1.75 (0.53–4.74) | .41 | … | … |
Agents* = antiarrhythmic drug; HR = hazard ratio.