TABLE 2.

Event Characteristics by Survival to Hospital Discharge

		Survival to Hospital Discharge
Event Characteristic	Overall (n = 47)	Yes (n = 18)	No (n = 29)	p
Location of CPR event, n (%)				0.006b
PICU	20 (43)	3 (17)	17 (59)
Cardiac ICU	27 (57)	15 (83)	12 (41)
Immediate cause,a n (%)
Hypotension	35 (74)	15 (83)	20 (69)	0.324b
Respiratory decompensation	13 (28)	4 (22)	9 (31)	0.739b
Arrhythmia	8 (17)	2 (11)	6 (21)	0.692b
First documented rhythm, n (%)				0.020b
Asystole/PEA	8 (17)	0 (0)	8 (28)
VF/VT	4 (9)	1 (6)	3 (10)
Bradycardia with poor perfusion	35 (74)	17 (94)	18 (62)
Duration of CPR (min)	6.0 (2.0–22.0)	3.0 (2.0–6.0)	11.0 (5.0–24.0)	0.006c
Duration of CPR (min) category, n (%)				0.023c
1–15	33 (70)	16 (89)	17 (59)
16–35	9 (19)	2 (11)	7 (24)
> 35	5 (11)	0 (0)	5 (17)
Interventions in place, n (%)
Vascular access	32 (68)	11 (61)	21 (72)	0.524b
Arterial catheter	34 (72)	14 (78)	20 (69)	0.739b
Central venous catheter	40 (85)	18 (100)	22 (76)	0.034b
Vasoactive infusion	36 (77)	14 (78)	22 (76)	1.000b
Time,d n (%)				0.063b
Weekday	27 (57)	13 (72)	14 (48)
Weeknight	11 (23)	1 (6)	10 (34)
Weekend	9 (19)	4 (22)	5 (17)
Pharmacologic interventions
Epinephrine,e n (%)	45 (96)	18 (100)	27 (93)	0.517b
No. of doses (when used)	2.0 (1.0–4.0)	1.0 (1.0–3.0)	3.0 (1.0–6.0)	0.013c
Calcium, n (%)	18 (38)	6 (33)	12 (41)	0.759b
Sodium bicarbonate, n (%)	27 (57)	6 (33)	21 (72)	0.015b

CPR = cardiopulmonary resuscitation.

^aImmediate causes are not mutually exclusive.

^bFisher exact test.

^cWilcoxon rank-sum test.

^dWeekdays are Monday–Friday, 07:00 am–22:59 pm; weeknights are Monday–Friday, 23:00 pm–06:59 am; and weekends are Saturday–Sunday.

^eThe comparison of number of epinephrine doses is based only on index events for which epinephrine was used.