. 2021 May 13;8:641633. doi: 10.3389/fmed.2021.641633

Table 4.

Correlations between clinical and laboratory variables of a subset of victims of hypothermic cardiac arrest displaying individual data undergoing attempted rewarming by means of ECSL (ECMO or/and CPB).

	Age	Male sex	Temp. initial	Sodium	Lactate	pH	PaCO₂	PaO₂	K⁺ initial	CPR duration
Age	1	0.09	0.13	−0.01	−0.26^*	0.32^***	−0.17	−0.02	−0.18^*	0.02
Male sex	0.09	1	0.11	0.24^*	0.16	−0.16^*	0.15	−0.12	0.22^*	0.09
Temp. initial	0.13	0.11	1	0.07	0.10	−0.05	0.09	−0.01	0.02	−0.10
Sodium	−0.01	0.24^*	0.07	1	0.48^**	−0.21	0.26^*	−0.23^*	0.19	0.26^*
Lactate	−0.26^*	0.16	0.10	0.48^**	1	−0.61^***	0.42^**	−0.19	0.47^***	0.07
pH	0.32^***	−0.16^*	−0.05	−0.21	−0.61^***	1	−0.43^***	0.21^*	−0.46^***	−0.03
PaCO₂	−0.17	0.15	0.09	0.26^*	0.42^**	−0.43^***	1	−0.44^***	0.46^***	0.12
PaO₂	−0.02	−0.12	−0.01	−0.23^*	−0.19	0.21^*	−0.44^**	1	−0.23^*	−0.24^*
K⁺ initial	−0.18^*	0.22^**	0.02	0.19	0.47^**	−0.46^***	0.46^***	−0.23^*	1	0.21^*
CPR duration	0.02	0.09	−0.10	0.26^*	0.07	−0.03	0.12	−0.24^*	0.21^*	1

Temp. Initial temperature; CPR duration, duration of cardiopulmonary resuscitation.

The correlation is significant at the P ≤ 0.05 level (two-tailed).

^**

The correlation is significant at the P ≤ 0.01 level (two-tailed).

^***

The correlation is significant at the P ≤ 0.001 level (two-tailed).