Predictors and outcomes of shunt-dependent hydrocephalus in patients with aneurysmal sub-arachnoid hemorrhage

BMC Surgery

Table 2 Location and seize of aneurysms in patients in terms of hydrocephalus (n = 168)

		With Hydrocephalus		Without Hydrocephalus	Total
		Initial hydrocephalus	Subsequent hydrocephalus
		N = 82	N = 22	N = 64	N = 168
Location of aneurysm
Single (n = 156)
	Anterior communicating artery aneurysm	19	8	24	51
	Posterior communicating artery aneurysm	21	3	7	31
	Middle cerebral artery aneurysm	8	3	10	21
	Internal carotid artery aneurysm	8	3	8	19
	Vertebral artery	4	1	3	8
	Others^η	16	3	7	26
	Multiple sites (N = 12)	6	1	5	12
	Diameter of aneurysm (mm)^Ф	0.75 ± 0.20	0.71 ± 0.25	0.67 ± 0.32	0.68 ± 0.31
Shape of aneurysm^Є
	Pouch	54	17	52	133
	Lobulation	13	3	8	24
	Fusiform	9	2	1	12
	dissection	4	0	2	6
	Wide neck	2	0	1	3

η = The other locations of aneurysms included the superior cerebellar artery aneurysm in four,, posterior inferior cerebellar artery aneurysm in four, anterior cerebral artery aneurysm in four, pericallosal artery aneurysm in three, posterior cerebral artery aneurysm in four, ophthalmic artery in one, basilar artery aneurysm in five, and anterior inferior cerebellar artery aneurysm in one.
Ф = Indicates the maximum diameter of the aneurysm if at least two aneurysms are found.
Є = Indicates the largest aneurysm if at least two aneurysms are found.

ISSN: 1471-2482