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Spinal tap needle11/13/2022 ![]() Spinal tap needle skin#The skin is site is prepared and draped, and a local anesthetic is injected. When the patient is positioned supine, pillows are provided to support the spine on a horizontal plane. The patient is positioned on his side at the edge of the bed with his knees drawn up to his abdomen and chin tucked against his chest (fetal position) or sitting while leaning over a bedside table. Position the patient to fetal position.The step-by-step procedure for a lumbar puncture (spinal tap) is as follows: Spinal needle with stylet (size 22G or 25G).Local anesthetic: Lidocaine 1% solution.Aseptic solution: povidone- iodine solution (Betadine).Severe coagulopathy. Due to the significant risk of epidural hematoma formation.Severe degenerative vertebral joint disease. There will be difficulty in passing the needle through the degenerated arthritic interspinal space.Skin infection near the puncture site. The presence of skin infection near the site of the lumbar puncture increases the risk of contamination of infected material into the CSF.Increased intracranial pressure due to a brain tumor. Cerebral or cerebellar herniation with severe neurological deterioration may occur after the withdrawal of CSF fluid.Placement of a lumbar CSF drainage catheterĪbsolute contraindication for lumbar puncture are as follows:.Treat normal pressure hydrocephalus, cerebrospinal fistulas, and idiopathic intracranial hypertension (IIH).Infuse medications which include spinal anesthesia before surgery, contrast material for diagnostic imaging such as CT-myelography, and chemotherapy drugs directly into the spinal canal.Evaluate and diagnose demyelinating or inflammatory CNS processes such as Multiple Sclerosis, Guillan-Barré Syndrome (GBS), Acute Disseminated Encephalomyelitis (ADEM).Assist in the diagnosis of suspected CNS infections (bacterial or viral meningitis, meningoencephalitis), intracranial or subarachnoid hemorrhage, and some malignant disorders.Measure cerebrospinal fluid (CSF) pressure.Lumbar puncture is indicated for the following reasons: Nursing Responsibility for Lumbar Puncture. ![]()
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