Summary
In spite of recent developments in diagnostic procedures, there are, as yet, no absolute criteria for making a definitive diagnosis of NPH. Transcranial Doppier (TCD) data concerning vascular reactivity obtained by hypercapnia, together with temporary external lumbar drainage, is useful for screening the NPH patients. Twenty patients with a clinical picture suggestive of NPH were studied by TCD to evaluate the autoregulatory reserve of brain perfusion, using the CO2 inhalation method. In 12 patients, clinical symptoms and flow velocity changes in the basal cerebral arteries were also evaluated after temporary lumbar drainage. With symptomatic improvement after external lumbar drainage and good vascular reactivity in the basal cerebral arteries, the prognosis after shunt placement is good, but without symptomatic improvement after lumbar drainage and with bad vascular reactivity, a shunting procedure is contraindicated.
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© 1991 Springer-Verlag Tokyo
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Fujita, K., Lin, X., Ehara, K., Tamaki, N., Matsumoto, S. (1991). Preoperative Evaluation of Normal Pressure Hydrocephalus by Transcranial Doppler Sonography. In: Matsumoto, S., Tamaki, N. (eds) Hydrocephalus. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68156-4_63
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DOI: https://doi.org/10.1007/978-4-431-68156-4_63
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68158-8
Online ISBN: 978-4-431-68156-4
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