CT evaluation of lateral ventricular dilatation after subarachnoid hemorrhage: Baseline bicaudate index balues

Stefan Dupont, Alejandro Rabinstein

Research output: Contribution to journalArticle

6 Scopus citations


Objectives: To define baseline bicaudate index (BCI) values in patients with subarachnoid hemorrhage (SAH). Methods: We reviewed the clinical and radiological information on consecutive adult patients admitted with acute SAH to our hospital between 1 January 2002 and 1 January 2008. Patients without diagnosis of acute hydrocephalus were entered into this study. Age-stratified BCI values were calculated. Results: Our study cohort comprised 108 patients (66 women, 61%). The clinical status at presentation was excellent with a median score of 1 on the World Federation of Neurological Surgeons Scale. Cisternal blood burden was mild to moderate with a median Hijdra score of 17 (out of 30). The upper limits of normal (ninety-fifth percentile) for BCI were 0.12 at age 45 years and under, 0.14 at 55 years, 0.16 at 65 years, and 0.17 thereafter. Conclusion: Albeit not perfect, the BCI is a commonly used linear measure of the lateral ventricular size. We present baseline BCI values in a cohort of patients with acute SAH. A diagnosis of hydrocephalus can be made when the BCI value exceeds the upper limit of normal for age.

Original languageEnglish (US)
Pages (from-to)103-106
Number of pages4
JournalNeurological Research
Issue number2
StatePublished - Jan 1 2013



  • Bicaudate index
  • Computed tomography
  • Hydrocephalus
  • Subarachnoid hemorrhage

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology
  • Medicine(all)

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