TABLE 4.
Odds ratios of clinical characteristics for spontaneous termination after ATP delivery
| n | Spontaneous termination after ATP delivery | Univariate analysis | p‐value | Multivariate analysis | p‐value | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Odds ratio | 95% confidence interval | Odds ratio | 95% confidence interval | |||||||
| RR interval variability of VT | ||||||||||
| Irregular | 94 | 23% | reference | reference | ||||||
| Regular | 196 | 1% | 0.03 | 0.01 | 0.17 | < 0.001 | 0.03 | 0.01 | 0.16 | < 0.001 |
| Average VT rate (bpm) | 290 | 85% | 0.99 | 0.97 | 1.02 | 0.662 | 1.00 | 0.98 | 1.03 | 0.701 |
| Sex | ||||||||||
| Women | 71 | 7% | reference | reference | ||||||
| Man | 219 | 9% | 1.42 | 0.15 | 13.60 | 0.609 | 1.81 | 0.26 | 12.82 | 0.550 |
| Structural heart disease | ||||||||||
| Non‐ischemic cardiomyopathy | 124 | 9% | reference | reference | ||||||
| Ischemic cardiomyopathy | 166 | 8% | 1.70 | 0.25 | 11.67 | 0.590 | 0.83 | 0.12 | 5.99 | 0.855 |
| Antiarrhythmic drug use | ||||||||||
| No | 169 | 7% | reference | reference | ||||||
| Yes | 121 | 10% | 1.05 | 0.15 | 7.48 | 0.958 | 0.91 | 0.17 | 4.96 | 0.914 |
| β‐blocker use | ||||||||||
| No | 86 | 7% | reference | reference | ||||||
| Yes | 204 | 9% | 1.55 | 0.17 | 13.75 | 0.694 | 1.86 | 0.25 | 14.10 | 0.548 |
| ACE‐I or ARB use | ||||||||||
| No | 101 | 7% | reference | reference | ||||||
| Yes | 189 | 9% | 1.01 | 0.14 | 7.05 | 0.993 | 0.96 | 0.13 | 6.84 | 0.967 |
Abbreviated: ACE‐I, angiotensin‐converting enzyme inhibitor; ARB, angiotensin II receptor blocker; ATP, anti‐tachycardia pacing; bpm, beats per min; VT, ventricular tachycardia