A New Method for Feedback on the Quality of Chest Compressions during Cardiopulmonary Resuscitation

Table 1

Median values (5/95 percentile in parenthesis) of the mean rate and depth per record for the regular and tilt sessions with  s. The Mann-Whitney test was used to compare the values obtained from the gold standard (CD signal) and the acceleration (accel. signal). No significant difference was observed for any of the CPR target conditions.

Target	Regular session		Tilt session
	CD signal	Accel. signal	CD signal	Accel. signal
Rate^a
80 min^−1	80.8 (77.4–84.8)	80.9 (77.5–84.9)	80.2 (77.5–83.6)	80.3 (77.7–83.6)
100 min^−1	100.1 (97.5–102.2)	100.0 (97.4–102.3)	100.3 (96.5–105.1)	100.1 (96.2–105.3)
120 min^−1	120.5 (117.4–123.8)	120.4 (117.6–123.9)	120.2 (116.9–123.7)	120.3 (116.9–124.0)
140 min^−1	140.1 (134.4–142.0)	140.2 (134.8–142.1)	140.2 (135.1–143.4)	140.1 (135.3–143.2)
Depth^b
30 mm	30.4 (27.7–33.3)	30.3 (27.0–33.5)	29.7 (27.5–32.6)	29.7 (27.0–33.2)
50 mm	50.1 (45.4–54.1)	50.1 (45.6–54.9)	52.3 (49.1–55.1)	52.5 (49.1–57.0)

40 records per session, ^b80 records per session.