External Ventricular Drain
Evd · Ventricular Drain · Ventriculostomy Catheter · External Drainage System
A thin, soft catheter that goes through a burr hole into a lateral ventricleVEN-trih-kulOne of the two lower chambers of the heart, or one of the fluid-filled spaces inside the brain.Full entry , connected to an outside drainage system: tubing with stopcocks, a graduated drip chamber on a pressure scale, and a collection bag.
On the table
What it does and what experienced techs know about it.
What it’s for
Drains cerebrospinal fluidser-uh-broh-SPY-nul FLOO-idThe clear, watery fluid that bathes and cushions the brain and spinal cord.cerebr/o brainspin spine-al relating toFull entry and measures intracranial pressurein-truh-KRAY-nee-ul PRESH-erThe pressure inside the skull, made by the brain, the blood and the fluid around the brain.intra- insidecrani/o skull-al relating toFull entry . It may be placed through a burr hole before a craniectomy or before closure to lower pressure, and is used for temporary drainage in raised ICP and hydrocephalushy-droh-SEF-uh-lusA buildup of too much cerebrospinal fluid inside the spaces (ventricles) of the brain.hydr/o watercephal/o head-us noun endingFull entry .
What experienced techs know
What techs who reach for it every day know about it.Pro
Through the case
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- During the case
Caution
What not to do with it, and why.Pro
- After the case
Care and reprocessing
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3 sources
- Fuller. Surgical Technology: Principles and Practice. 8th ed. Chapter 34 (Neurosurgery), p. 981
- Rothrock. Alexander's Care of the Patient in Surgery. 17th ed. Chapter 21 (Neurosurgery), p. 783
- Rothrock. Alexander's Care of the Patient in Surgery. 17th ed. Chapter 21 (Neurosurgery), p. 793
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