Critical illness polyneuropathy in ICU patients is related to reduced motor nerve excitability caused by reduced sodium permeability

Intensive Care Medicine Experimental

Table 3 Correlation between selected excitability parameters and lab results

	pCO² mmHg	HCO³ mmol/l	Lactate mg/dl	K mmol/l	Na mmol/l
SDtc (ms)	0.075	0.41	0.102	0.993	0.543
Rheobase (mA)	0.203	0.875	0.066	0.097	0.728
TEd⁴⁰ _{(10–20 ms)}	0.007**	0.2	0.016*	0.58	0.924
S2⁴⁰ accommodation	0.175	0.215	0.013*	0.475	0.072
Superexcitability %	0.832	0.533	0.396	0.348	0.087
Late sub-excitability %	0.165	0.066	0.664	0.796	0.147

SD _tc strength duration time constant, TE threshold electrotonus, RRP relative refractory period, HCO ³ bicarbonate
* p values < 0.05; ** p values < 0.01