Distribution of hematocrit values after aneurysmal subarachnoid hemorrhage

Cole A. Giller, Matthew J. Wills, Angela M. Giller, Duke Samson

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Low hematocrit values are common after subarachnoid hemorrhage and may be associated with elevated cerebral blood flow and transcranial Doppler ultrasound (TCD) velocities, which may confound the interpretation of velocity as an indicator of vasospasm. The exact distribution of hematocrit among a neurosurgical population would be useful in assessing the magnitude of this difficulty but has not been previously reported. A database containing hematocrit values recorded at TCD examinations over a period of 7 years was reviewed. Two thousand four hundred thirteen hematocrit values were recorded for 575 patients. The distribution of hematocrit values was recorded among patients and among TCD studies. Eighteen percent of the patient population achieved a hematocrit of 26% or less at some point in their hospital stay, whereas 57% of patients achieved a hematocrit of 30% or less. Six percent of the TCD studies were associated with a hematocrit of 26% or less, while 33% of the studies were associated with a hematocrit of 30% or less.

Original languageEnglish (US)
Pages (from-to)169-170
Number of pages2
JournalJournal of Neuroimaging
Volume8
Issue number3
DOIs
StatePublished - Jul 1998

Keywords

  • Aneurysm
  • Hematocrit
  • Subarachnoid hemorrhage
  • Transcranial Doppler

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

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