How senior paramedics decide to cease resuscitation in pulseless electrical activity out of hospital cardiac arrest: a mixed methods study

Table 3 System factors

System factors	N (%)	Duration hr:min:sec
No flow time^& median (IQR)	50 (100)	0:07:30 (4.46–15.25)
Duration of BLS median (IQR)	26 (52)	0:07:35 (4.58–16.01)
Duration of lone ambulance BLS^€ median (IQR)	23 (46)	0:07:32 (5.31–15.9)
Duration of ALS^# mean (SD)	50 (100)	0:54:46 (0:16:59)
Duration of resuscitation^{^} (BLS & ALS) mean (SD)	50 (100)	0:59:32 (0:17:39)
Total duration of out of hospital cardiac arrest mean (SD)	50 (100)	1:09:23 (0:19:53)

^&No flow time, time from collapse to the start of resuscitation
^€Lone ambulance responders (community responders, advanced technicians, paramedics, duty officers) providing BLS only
^#ALS time of ambulance arrival to confirmation of death
^{^}Duration of out of hospital cardiac arrest, no flow time to confirmation of death

ISSN: 1757-7241