Table 2.

Arterial blood gasses during cardiopulmonary resuscitation and after return of spontaneous circulation.

CPR Method	Measurement	Baseline	5-min CPR	30min ROSC	4hr ROSC
SCPR	pH	7.44±0.03	7.28±0.2	7.26±0.08	7.39±0.06
	PCO2	42±2	49±13	47±10	41±3
	PO2	96±14	100±34	98±28	80±25
	HCO3 −	28±2	22±3	20±2	24±3
	ETCO2	40±2	43±14	39±5	41±5
SCPR+IPC	pH	7.45±0.04	7.26±0.08	7.32±0.03	7.43±0.06
	PCO2	40±5	47±4	38±4*	41±2
	PO2	90±20	89±14	83±26	75±20
	HCO3 −	28±1	21±3	21±2	27±3
	ETCO2	39±3	45±7	35±3	35±2
SCPR+CVT	pH	7.45±0.03	7.29±0.06	7.34±0.03*	7.40±0.07
	PCO2	43±2	51±5	43±6	42±3
	PO2	83±19	97±25	86±26	76±18
	HCO3 −	29±1	25±5	23±2	26±4
	ETCO2	40±1	44±8	37±3	35±4
SCPR+IPC+CVT	pH	7.46±0.04	7.25±0.08	7.35±0.04*	7.46±0.06
	PCO2	40±3	49±9	40±2*	39±5
	PO2	83±21	104±21	78±19	89±16
	HCO3 −	29±2	22±4	22±2	28±2
	ETCO2	38±3	44±5	34±4	34±5

Mean ± SD. Arterial blood gas measurements at baseline and after ROSC. Partial pressures in torr. SaO2: percent oxygen saturation; HCO3: bicarbonate; ETCO2: end-tidal CO2.

^*means statistically significant difference compared to SCPR group with a p value of <0.05.