Spinal Needle Deflection in the Combined Spinal-Epidural Technique
1996; Lippincott Williams & Wilkins; Volume: 83; Issue: 3 Linguagem: Inglês
10.1097/00000539-199609000-00060
ISSN1526-7598
Autores Tópico(s)Management of metastatic bone disease
ResumoTo the Editor: Sitzman and Uncles [1] examined the effects of needle type, gauge, and tip bend on spinal needle deflection. In their discussion they wrote that "the use of a Tuohy needle as an introducer, such as that used with a combined spinal-epidural technique, is advantageous in that the epidural needle guides and places the fine-gauge spinal needle in close proximity to the subarachnoid space." However, because of the bent tip of the epidural needle, the spinal needle deflects from its straight direction (approximately 10 degrees). This deflection is more than the 25-gauge Sprotte or Whitacre needles introduced through a straight introducer at the 60-mm depth. It means that, according to their results, the epidural needle is the worst kind of introducer for the spinal needle in regard to the spinal needle deflection. Joseph Eldor, MD Department of Anesthesia Misgav Ladach General Hospital Jerusalem, Israel
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