Abstract #3 Table 1

Return of spontaneous circulation and hemodynamic parameters

Inspired O2 Concentration During Chest Compression
21% O2
(n =4)
50% O2
(n =4)
100% O2
(n =4)
P value
ROSC, n (%) 3 (75%) 4 (100%) 2 (50%) 0.2692
Mean Time to ROSC, sec (± SD) 299 ± 111 301 ± 123 379 ± 159 0.6666
Mean Epinephrine doses, n (± SD) 1.3 ± 1.9 0.5 ± 0.6 2.3 ± 2.1 0.9277
Lambs that achieved ROSC without Epinephrine, n 2 2 1 0.8290
Mean pulmonary artery blood flow (mL/kg/min) over 20 minutes post-ROSC (± SD) 38 ± 47 64 ± 32 * 59 ± 22 * <0.001
Mean carotid artery blood flow (mL/kg/min) over 20 minutes post-ROSC (± SD) 14 ± 4 20 ± 6 *‡ 16 ± 6 * 0.0027
Mean systolic blood pressure (mmHg) over 20 minutes post-ROSC (± SD) 61 ± 12 77 ± 19 * 71 ± 25 * <0.001
Mean diastolic blood pressure (mmHg) over 20 minutes post-ROSC (± SD) 46 ± 18 52 ± 10 * 52 ± 19 * 0.0258
  • Definition of abbreviations: ROSC- return of spontaneous circulation, SD- standard deviation * Significantly different from the 21% group. ‡ Significantly different from the 100% group.