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Discrepancy Between the Results of TCD and the Clinical Status of Patients After SAH

  • E. Wranze-Bielefeld
  • W. A. Dauch
  • B. L. Bauer
Part of the Advances in Neurosurgery book series (NEURO, volume 18)

Abstract

Transcranial Doppler sonography has become a widely accepted diagnostic method for the detection of intracranial vascular pathologies. It seems clear that vasospasm is often combined with neurological deficits. We use the terminology of Harders [3] in speaking about normal cerebral blood flow and subcritical and critical vasospasm detected by TCD (normal cerebral blood flow: velocity below 80cm/s; slight vasospasm: velocity up to 120cm/s; severe vasospasm: velocity above this value as detected in the MCA). In 1987 Seiler and Grolimund [6] described vasospasm found in patients who were clinically asymptomatic. They discussed this phenomenon and speculated that it is due to a lack of autoregulation and perhaps better collateralization in the affected area.

Keywords

Cerebral Blood Flow Posterior Fossa Blood Flow Velocity Intracranial Aneurysm Transcranial Doppler Sonography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • E. Wranze-Bielefeld
  • W. A. Dauch
  • B. L. Bauer
    • 1
  1. 1.Neurochirurgische AbteilungPhilipps Universität MarburgMarburgGermany

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