Table 2 Characteristics of patients after propensity score matching
No drug | Epinephrine | P value | |
|---|---|---|---|
(n = 141) | (n = 141) | ||
Age (year) | 72 ± 13 | 72 ± 18 | 0.752 |
Gender, male (%) | 103 (73) | 92 (65) | 0.200 |
Bystander performed CPR, n (%) | 54 (38) | 71 (50) | 0.044 |
Advanced life support by a physician in the ambulance, n (%) | 72 (51) | 68 (48) | 0.694 |
VF/VT as initial rhythm at starting CPR by EMTs, n (%) | 28 (20) | 27 (19) | 1.000 |
From call receipt to ambulance stop (min) | 6.2 ± 2.5 | 6.4 ± 2.5 | 0.527 |
From call receipt to start CPR by EMTs (min) | 7.9 ± 3.0 | 7.8 ± 3.1 | 0.845 |
From witnessed cardiac arrest to start CPR by EMTs (min) | 10.1 ± 8.4 | 9.3 ± 6.9 | 0.377 |
From the start of CPR by EMTs to departure from the scene (min) | 13.5 ± 4.3 | 13.6 ± 3.9 | 0.878 |
From the start of CPR by EMTs to arrival at the hospital (min) | 24.4 ± 5.8 | 25.3 ± 5.6 | 0.162 |
CPR time (min) | 23.3 ± 5.1 | 23.2 ± 4.6 | 0.977 |
From witnessed cardiac arrest to the first epinephrine administration (min) | - | 21.8 ± 8.2 | - |
From start CPR by EMTs to the first epinephrine administration (min) | - | 12.7 ± 5.0 | - |
Frequency of epinephrine administrations until arrival at the hospital | - | 2.1 ± 1.0 | - |
Outcome | |||
ROSC before arrival at the hospital, n (%) | 18 (13) | 38 (27) | 0.002 |
From start CPR by EMTs to ROSC (min) | 20.3 ± 5.8 | 21.5 ± 4.7 | - |
Admission to the intensive care units, n (%) | 44 (31) | 57 (40) | 0.112 |
Survival 7 days after the cardiac arrest, n (%) | 22 (16) | 28 (20) | 0.429 |
Survival 30 days after the cardiac arrest, n (%) | 19 (13) | 22 (16) | 0.728 |
Favorable neurological state 30 days after, n (%) | 11 (8) | 12 (9) | 1.000 |