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

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

   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
  Othersη 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 aneurysmЄ     
  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
  1. 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.
  2. Ф = Indicates the maximum diameter of the aneurysm if at least two aneurysms are found.
  3. Є = Indicates the largest aneurysm if at least two aneurysms are found.