title: [Incidence of extra-arachnoid discharge following lumbar puncture].
abstract: Dimer-X is considered a good contrast medium for lumbar myelography. Its physical properties guarantee a homogeneous mixture with cerebrospinal fluid, with the result that postpunctural fluid leakage is easy to detect. One hundred Dimer-X lumbar myelographies were performed with two different spinal needles, a short beveled needle of 1.2 mm outer diameter and a special beveled "Quincke" needle of 0.7 mm outer diameter. Postpunctural fluid leakage is observed in 32% of the cases with the former and in only 12% with the latter. False-route injections occurred in 5% of the cases. Epidural leakage is the most frequent and can be detected by its "Christmas tree" appearance on antero-posterior X-ray. Subdural leakage is represented by a "railroad track" appearance on a lateral view. The leakage is observed more frequently in patients with normal myelogram (28%) than in patients with a herniated lumbar disc (18%).
mesh_terms: D002555:Cerebrospinal Fluid; D005402:Fistula / Q000209:etiology; D006801:Humans; D007482:Iothalamate Meglumine / Q000009:adverse effects; D008159:Lumbar Vertebrae; D009192:Myelography / Q000009:adverse effects*; D013129:Spinal Puncture / Q000009:adverse effects*
chemical_list: D007482:Iothalamate Meglumine
vernacular_title: Die Häufigkeit extra-arachnoidalen Liquorausflusses nach Lumbalpunktion