Table 4.

Differences between impaired cerebral autoregulation according to Mxa and ARI in different subgroups of patients.

	Altered ARI	Altered Mxa	p -value
	(n = 40)	(n = 50)
MV (n = 52)	27	31	0.54
NON MV (n = 43)	13	19	0.26
p-value	0.04	0.15
Sedatives (n = 34)	18	23	0.36
No-sedatives (n = 61)	22	27	0.42
p-value	0.13	0.03
NMBA (n = 13)	8	7	0.99
No-NMBA (n = 82)	32	43	0.09
p-value	0.14	0.99
Vasopressors (n = 69)	33	36	0.71
No vasopressors (n = 26)	7	14	0.12
p-value	0.10	0.99
Survivors (n = 75)	29	37	0.22
Non-survivors (n = 20)	11	13	0.77
p-value	0.21	0.31

MV, mechanical ventilation; NMBA, neuromuscular blocking agent; Mxa, mean flow index; ARI, autoregulation index.