Table 1

Comparision of good versus poor collateral grades

Characteristics	Poor collaterals (0,1,2) (n=41)		Good collaterals (3,4) (n=23)		P value
Characteristics		%			P value
Demographics
Age, median, IQR	53	43–62	49	41–58	NS
Age > 53	20	49	7	30	NS
Female	26	63	17	74	NS
Non-caucasian ethnicity	25	64	13	57	NS
Hypertension	17	46	9	39	NS
Ever smoked (>100 cigarettes)	22	54	14	61	NS
Diabetes	2	5	0	0	NS
Admission predictors
Hunt and Hess Grade≥3	25	41	12	52	NS
Glasgow Coma Score<8	8	20	7	30	NS
Sentinel headache	9	22	4	17	NS
Ictal loss of consciousness	16	39	8	35	NS
APACHE-II Physiologic Score	16	10–21	12	8–18	NS (P=0.2)
Admission CT scan
Thick SAH*	27	66	17	74	NS
Global cerebral edema	21	51	10	44	NS
Intraventricular hemorrhage	23	54	12	52	NS
Intracerebral hemorrhage	11	27	8	35	NS
Aneurysm characteristics
Anterior location	21	51	18	78	0.033
Aneurysm size>15 mm	1	2	0	0	NS
Clip repair procedure	29	71	21	91	NS
Complications
Neurological
Rebleed	4	10	2	9	NS
Herniation	6	15	1	4	NS
Medical
Fever>101.5 °F	22	56	10	44	NS
Pneumonia	14	34	7	30	NS
Sepsis	6	15	0	0	NS
Cardiac
Arrhythmias	7	17	4	17	NS
Cardiac arrest (in ICU)	0	0	0	0	NA
Myocardial infarction	8	20	3	13	NS
Pulmonary edema	12	29	3	13	NS
Outcomes
Clinical deterioration due to vasospasm	28	68	17	74	NS
Cerebral infarction	21	51	10	44	NS
DCI	29	71	17	74	NS
Poor functional outcome at 3 months	11	27	4	17	NS
Severity of vasospasm
Mild	13	32	1	4	0.012
Moderate	9	22	6	26	NS
Severe	17	42	14	61	NS