Table 2.
Multivariable logistic regression analysis for the outcomes.
| Sustained ROSC | One-month survival | Six-month good neurologic outcome | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OR | (95% CI) | p | OR | (95% CI) | p | OR | (95% CI) | p | |||
| Heart rate group | |||||||||||
| Bradycardia | 0.79 | (0.23–2.75) | 0.711 | 1.92 | (0.41–9.10) | 0.411 | 1.69 | (0.29–9.82) | 0.558 | ||
| Normal HR | 1.00 | (Reference) | 1.00 | (Reference) | 1.00 | (Reference) | |||||
| Tachycardia | 1.23 | (0.54–2.82) | 0.624 | 0.70 | (0.27–1.79) | 0.449 | 0.79 | (0.29–2.16) | 0.642 | ||
| Extreme tachycardia | 11.30 | (1.35–94.53) | 0.025∗ | 0.82 | (0.27–2.49) | 0.724 | 0.92 | (0.28–3.08) | 0.896 | ||
| Age, per 10 years | 0.85 | (0.66–1.11) | 0.230 | 0.82 | (0.66–1.02) | 0.079 | 0.80 | (0.63–1.02) | 0.073 | ||
| Male | 0.73 | (0.34–1.57) | 0.427 | 2.15 | (1.02–4.55) | 0.045∗ | 3.45 | (1.56–21.50) | 0.009∗ | ||
| Witnessed arrest | 2.15 | (0.91–5.11) | 0.083 | 1.30 | (0.49–3.46) | 0.605 | 0.96 | (0.34–2.65) | 0.929 | ||
| Public place | 1.84 | (0.56–6.02) | 0.313 | 1.11 | (0.42–2.96) | 0.829 | 1.83 | (0.66–5.07) | 0.245 | ||
| Shockable initial rhythm | 1.19 | (0.37–3.84) | 0.268 | 3.03 | (1.22–7.51) | 0.017∗ | 3.18 | (1.25–8.10) | 0.015∗ | ||
| Bystander CPR | 1.67 | (0.67–4.16) | 0.268 | 1.81 | (0.76–4.34) | 0.182 | 1.87 | (0.71–4.91) | 0.205 | ||
| Total epinephrine dose, per 1 mg | 0.89 | (0.75–1.05) | 0.152 | 0.69 | (0.52–0.92) | 0.011 | 0.77 | (0.57–1.04) | 0.083 | ||
| MAP ≥ 80 mmHg at ROSC | 0.90 | (0.43–1.88) | 0.778 | 2.21 | (0.98–4.97) | 0.056 | 1.84 | (0.76–4.43) | 0.175 | ||
| No-flow time, per 1 min | 1.02 | (0.98–1.06) | 0.395 | 0.95 | (0.91–1.00) | 0.057 | 0.94 | (0.89–0.99) | 0.042∗ | ||
| Low-flow time, per 1 min | 0.99 | (0.97–1.02) | 0.716 | 0.95 | (0.91–0.98) | 0.005∗ | 0.94 | (0.91–0.98) | 0.007∗ | ||
Bradycardia, HR < 60 beats/min; normal, 60 ≤ HR ≤ 100 beats/min; tachycardia, 100 < HR < 150 beats/min; extreme tachycardia, HR ≥ 150 beats/min. ROSC, return of spontaneous circulation; OR, odds ratio; CI, confidence interval; HR, heart rate; CPR, cardiopulmonary resuscitation; MAP, mean arterial pressure. ∗Statistically significant.