Table 1.
Baseline data for all subjects at the time of cardiac arrest
|
All subjects |
Hypocapnia |
Normocapnia |
Hypercapnia |
|
|---|---|---|---|---|
| n = 75 | n = 11 | n = 47 | n = 17 | |
| Age (years (SD)) |
66 (16) |
71 (16) |
66 (16) |
62 (15) |
| Female gender (n (%)) |
33 (44) |
7 (64) |
18 (38) |
8 (47) |
| Pre-existing comorbidities (n (%)) |
|
|
|
|
| diabetes |
33 (44) |
4 (36) |
23 (49) |
6 (35) |
| known coronary artery disease |
18 (24) |
6 (55) |
8 (17) |
4 (24) |
| hypertension |
44 (59) |
9 (82) |
29 (62) |
6 (35) |
| malignancy |
17 (23) |
3 (27) |
11 (23) |
3 (18) |
| renal insufficiency |
16 (21) |
4 (36) |
10 (21) |
2 (12) |
| pulmonary disease |
22 (29) |
3 (27) |
11 (23) |
8 (47) |
| cerebral vascular disease |
2 (3) |
0 |
2 (4) |
0 |
| congestive heart failure |
10 (13) |
1 (9) |
6 (13) |
3 (18) |
| Charlson comorbidity score [33] (median (IQR)) |
2 (1 to 4) |
3 (2 to 4) |
2 (1 to 4) |
2 (1 to 6) |
| Arrest location (n (%)) |
|
|
|
|
| Out-of-hospital |
11 (15) |
0 |
6 (13) |
5 (29) |
| In-hospital |
64 (85) |
11 (100) |
41 (87) |
12 (71) |
| Initial arrest rhythm (n (%)) |
|
|
|
|
| PEA/asystole |
56 (75) |
7 (64) |
35 (74) |
14 (82) |
| VF/VT |
19 (25) |
4 (36) |
12 (26) |
3 (18) |
| CPR duration > 20 minutes (n (%)) | 9 (12) | 0 | 4 (9) | 5 (29) |
CPR, cardiopulmonary resuscitation; PEA, pulseless electrical activity; VF, ventricular fibrillation; VT ventricular tachycardia.