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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Resuscitation. 2012 Nov 7;84(5):696–701. doi: 10.1016/j.resuscitation.2012.10.023

Table 3.

Depth 33 and Depth 51 refer to depth-guided CPR at 33mm and 51 mm, respectively. CPP-20 refers to CPR directed to attain coronary perfusion pressure >20 mmHg

Depth 33
(n=7)		 Depth 51
(n=6)		 CPP-20
(n=5)		 p
Baseline
   pH 7.53 (0.02) 7.53 (0.01) 7.54 (0.01) 0.96
  pCO2 (mmHg) 46 (1) 44 (2) 45 (1) 0.42
  pO2 (mmHg) 127 (8) 120 (10) 136 (9) 0.49
 End of Asphyxial Period*
   pH 7.28 (0.02) 7.25 (0.02) 7.31 (0.02) 0.23
  pCO2 (mmHg) 82 (5) 84 (4) 75 (7) 0.51
  pO2 (mmHg) 10 (1) 12 (1) 14 (2) 0.25
 After 6 Minutes of CPR†
   pH 7.44 (0.05) 7.32 (0.04) 7.40 (0.02) 0.13
  pCO2 (mmHg) 35 (5) 49 (7) 35 (7) 0.23
  pO2 (mmHg) 312 (88) 220 (67) 211 (67) 0.58
*

Sample drawn at 6min 30s during asphyxial period

†

Sample drawn at 6 minutes during protocol resuscitation period