Table 2.

CPR Pause Length.

	Baseline period	Interventional period
ALL pauses
CPR Pause length (s)	28.3 (25.1–31.5)	12.8 (11.9–13.7)
Pauses with US performed
CPR Pause length (s)	29.7 (26.3–33.1)	13.1 (12.1–14.2)
US image acquisition length (s)	20.4 (18.0–22.7)	11.0 (10.1–11.8)
Non-US related CPR pause time (s)	9.3	2.1
Pauses with US – pre-pause imaging only
CPR Pause length (s)		11.8 (10.7–12.8)
US image acquisition length (s)		9.9 (9.1–10.8)
Non-US pause time (s)		1.9
Pauses with US – no pre-pause imaging only
CPR Pause length (s)		17.3 (15.2–19.4)
US image acquisition length (s)		13.8 (11.8–15.9)
Non-US pause time (s)		3.5

Data – Mean (95%CI).