Determinants of venous return in steady-state physiology and asphyxia-induced circulatory shock and arrest: an experimental study

Intensive Care Medicine Experimental

Table 3 Differences in respiratory and metabolic parameters before the onset and at the end of cardiac arrest interval

	Before the onset of cardiac arrest			At the end of cardiac arrest
	VF group	Asphyxia group	p-value	VF group	Asphyxia group	p-value
pH	7.41 ± 0.04	7.42 ± 0.02	0.489	7.34 ± 0.03	7.1 ± 0.02	< 0.001
PaO₂ (mmHg)	151 ± 6	152 ± 7	0.735	63 ± 3	17.9 ± 3	< 0.001
PaCO₂ (mmHg)	42 ± 1.4	43 ± 1.6	0.154	46 ± 2	88 ± 7	< 0.001
Lactate (mmol L⁻¹)	1.2 ± 0.2	1 ± 0.1	0.011	3 ± 0.3	16 ± 0.8	< 0.001

VF: ventricular fibrillation; PaO₂: arterial partial pressure of oxygen; PaCO₂: arterial partial pressure of carbon dioxide