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PubMed · 7948662

[Computer-assisted test ring for cerebrospinal fluid drainage systems].

S Leonhardt·V Bluhm·W I Steudel
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Abstract

The present paper describes a computer-aided test rig for shunts used to treat hydrocephalus. The test rig permits the automatic testing of commercially available shunt systems at defined flow or pressure levels. A thin glass tube serves as a reference to ensure the proper functioning of the setup. Six brand-new shunt systems were tested. As an application example, the dependency of shunt function on angular orientation in space was investigated. It was found that such a dependency actually exists.

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Cerebrospinal FluidCerebrospinal Fluid ShuntsEquipment DesignHumansHydrocephalusIntracranial PressureModels, NeurologicalReference ValuesSignal Processing, Computer-AssistedComparative StudyEnglish AbstractJournal Article

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S Leonhardt, V Bluhm, W I Steudel. [Computer-assisted test ring for cerebrospinal fluid drainage systems].. https://pubmed.ncbi.nlm.nih.gov/7948662/

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Cerebrospinal fluid dissecting into spinal epidural space after lumbar puncture causing cauda equina syndrome: review of literature and illustrative case.

OBJECTS: We report a case of epidural cerebrospinal fluid (CSF) leak after lumbar puncture caused by CSF dissecting into the spinal epidural space. The incidence of this phenomenon may be higher than suspected, although most cases may remain asymptomatic. MATERIALS AND METHODS: A 4-year-old girl with new-onset seizure underwent a diagnostic lumbar puncture, the results of which were normal; 3 h later, she began experiencing severe low-pressure headaches and lower back pain, bilateral lower extremity weakness, numbness, and pain, and urinary retention when upright. Spinal MRI demonstrated extensive epidural CSF collection posterior to the thecal sac extending from the cervicothoracic junction to the sacrum. After 48 h in the supine position and gradual mobilization, the patient had complete resolution of symptoms and no neurological sequelae. CONCLUSION: Patients usually recover without any neurological deficits after conservative treatment. Prone or lateral decubitus positioning immediately after lumbar puncture may decrease the incidence of this phenomenon.

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