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Table 1 Clinical and EMSa characteristics

From: Impact of early intravenous amiodarone administration on neurological outcome in refractory ventricular fibrillation: retrospective analysis of prospectively collected prehospital data

CharacteristicsTotal
(n = 134)
Neurological outcome at hospital dischargep-value
Good-CPCb group
(n = 15)
Poor-CPCb group
(n = 119)
Age, median (IQRc)60 (48–71)51 (36–65)61 (49–84)0.009
Male, n (%)114 (85.1)14 (93.3)100 (84.0)0.343
Hypertension, n (%)33 (24.6)5 (33.3)28 (23.5)0.524
Diabetes, n (%)24 (17.9)1 (6.7)23 (19.3)0.306
Cerebrovascular disease, n (%)3 (2.2)0 (0)3 (2.2)1.000
Heart disease, n (%)26 (19.4)2 (13.3)24 (20.2)0.735
Arrest location - Public space, n (%)56 (41.8)9 (60.0)47 (39.5)0.131
Witnessed arrest, n (%)91 (67.9)11 (73.3)80 (67.2)0.774
Bystander CPRd, n (%)105 (78.4)14 (93.3)91 (76.5)0.137
Response time (minutes)7 (6–9)7 (6–11)7 (6–15)0.441
Defibrillation time (minutes)11 (9–13)10 (9–17)11 (9–20)0.205
Number of shocks7 (5–9)6 (4–7)7 (5–9)0.421
TTMe, n(%)15 (11.2)6 (40.0)9 (7.6)0.002
Call-to-amiodarone administration interval (minutes)23 (19–26.3)19 (18–22)23 (19–28)0.009
Call-to-epinephrine administration interval (minutes)18 (15–22)17 (15–19)18 (15–22)0.113
  1. aEMS Emergency medical service, bCPC Cerebral performance category, cIQR Interquartile range, dCPR Cardiopulmonary resuscitation, eTTM Targeted temperature management