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. Author manuscript; available in PMC: 2010 Sep 1.
Published in final edited form as: Resuscitation. 2009 Jul 5;80(9):981–984. doi: 10.1016/j.resuscitation.2009.06.002

Table 3.

CC rate and depth over consecutive 30 sec segments within a block of continuous CPR.

Segment (sec) blocks, n rate (/min) depth (mm)
0–30 135 105.2 ± 11.5 48.3 ± 9.6
31–60 135 105.8 ± 10.0 48.5 ± 9.1
61–90 135 105.8 ± 8.6 47.9 ± 8.9
91–120 116 106.3 ± 9.3 46.0 ± 9.0
121–150 32 102.9 ± 7.6 44.0 ± 8.4
151–180 10 106.6 ± 8.8 43.7 ± 7.4

CC: chest compression; CPR: cardiopulmonary resuscitation. Note that each continuous CC block was of different duration, thus the later segments are represented in a decreasing number of blocks. No p values are shown, as statistical evaluation was only performed on paired CC data (see Figure 1 and Figure 2).