The etiology and outcome of non-traumatic coma in critical care: a systematic review

BMC Anesthesiology

Table 3 Mortality rates (in percentages) of non-traumatic coma etiologies

Study reference	Esquevin [6]	Forsberg [21]	Weiss [18]	Greer [14]	Sacco [16]	Levy [15]	Owolabi [12]	Sinclair [13]	Matuja [11]
Stroke	83	60	68	88	-	74	69	93	95
CNS infection	0	-	17	-	-	-	-	38	39
Poisoning	-	2	7	-	0	-	-	35	67
Epilepsy	0	<1	10	-	-	-	-	-	-
Post-anoxic coma	50²	72	80	89	54	58	-	-	-
Respiratory	-	61	36	-	-	-	-	-	-
Infection	-	27	-	-	-	-	-	-	-
Metabolic¹	15	16	20	-	48	-	-	86	43
Hepatic encephalopathy	-	-	-	80	-	49	-	-	90
Shock	-	-	80	-	-	-	-	-	-
Eclampsia	-	-	-	-	-	-	-	33	-
Unclassified	-	-	-	-	-	-	-	93	100

¹The term metabolic includes endocrine, ionic and acid–base disorders and metabolic brain dysfunction.
²Includes poisoning, metabolic or immune disorders and respiratory failure.

ISSN: 1471-2253