|
Age (years)
|
55 (46 to 68)
|
74 (62 to 83)
|
<0.001
|
|
Male gender
|
90 (82)
|
177 (61)
|
<0.001
|
|
Pittsburgh overall performance category scale before index cardiac arrest
| | |
<0.001
|
|
Category 1
|
109 (99)
|
216 (74)
| |
|
Category 2
|
1 (1)
|
62 (21)
| |
|
Category 3
|
0 (0)
|
12 (4)
| |
|
Category 4
|
0 (0)
|
0 (0)
| |
|
Initial rhythm
| | |
<0.001
|
|
Ventricular fibrillation
|
64 (58)
|
41 (14)
| |
|
Pulseless electrical activity
|
23 (21)
|
134 (46)
| |
|
Asystole
|
23 (21)
|
115 (40)
| |
|
Bystander cardiopulmonary resuscitation
|
61 (55)
|
137 (47)
|
0.14
|
|
Time interval from collapse to start of cardiopulmonary resuscitation (minutes)
|
6 (1 to 10)
|
7 (1 to 14)
|
0.049
|
|
Time interval from collapse to return of spontaneous circulation (minutes)
|
35 (21 to 48)
|
43 (23 to 56)
|
<0.01
|
|
Admission after 2006
|
83 (75)
|
169 (58)
|
<0.01
|
|
Hypertension
|
44 (40)
|
85 (29)
|
0.04
|
|
Diabetes mellitus
|
29 (26)
|
47 (16)
|
0.02
|
|
Previous history of heart disease
|
42 (38)
|
63 (22)
|
<0.001
|
|
Previous history of myocardial infarction
|
18 (16)
|
15 (5)
|
<0.001
|
|
Previous history of chronic heart failure
|
16 (15)
|
27 (9)
|
0.13
|
|
Cause of cardiac arrest
| | | |
|
Acute coronary syndrome
|
46 (41)
|
56 (19)
| |
|
Old myocardial infarction
|
12 (11)
|
4 (1)
| |
|
Cardiomyopathy
|
13 (12)
|
8 (3)
| |
|
Spasm of coronary artery
|
8 (7)
|
2 (1)
| |
|
Others
|
27 (25)
|
72 (25)
| |
|
Unknown
|
4 (4)
|
148 (51)
| |
