منابع مشابه
Computer-based finite element modeling of insulated Tuohy needles used in regional anesthesia.
BACKGROUND Differences in needle design may impact nerve localization. This study evaluates the electrical properties of two insulated Tuohy needles using computational finite element modeling. METHODS Three-dimensional geometric computer-based models were created representing two 18-gauge, insulated Tuohy needles: (1) with an exposed metal tip and (2) with an insulated tip. The models were p...
متن کاملHow much work is required to puncture dura with Tuohy needles?
The effects of needle bevel orientation and cerebrospinal fluid (CSF) pressure on dural displacement and force required to penetrate cadaveric dura were studied using 40 samples. A constant hydrostatic pressure was applied to the subdural surface, either high or low, simulating the sitting and lateral positions. A 17-gauge Tuohy needle was advanced through the dura with the bevel oriented paral...
متن کاملA Modified Tuohy Needle.
When introducing a catheter into the epidural space, difficulty is sometimes encountered if the catheter tends to bend in the needle hub. This often occurs if resistance to the onward movement of the catheter is met. Kinking can result with consequent weakening of the catheter, and even more difficulty in advancing into the epidural space. To overcome this, a Tuohy needle has been specially mod...
متن کاملNeedles, needles, everywhere!
A 55-YR-OLD man with endstage renal disease presented for emergent removal of an infected arteriovenous dialysis graft. This patient had multisystemic disease, including hepatitis C, human immunodeficiency virus, cardiomyopathy, and atrial fibrillation. He also had a history of left internal jugular thrombosis and right common carotid septic pseudoaneurysm, corrected via partial sternotomy. A c...
متن کاملDept . of CSE , PIET HOD , Dept . Of CSE & IT , UCE
Folded Dualcube: A New Interconnection Topology For Parallel Systems Ms. Nibdita Adhikari Prof. (Dr.) C. R. Tripathy Asst. Prof & HOD, Dept. of CSE, PIET HOD, Dept. Of CSE &IT, UCE Rourkela, Orissa, India Burla, Sambalpur, Orissa, India Email: [email protected] Abstract-With the advent of VLSI technology, the demand for higher processing has increased to a large extent. Study of parallel c...
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ژورنال
عنوان ژورنال: Canadian Journal of Anaesthesia
سال: 1998
ISSN: 0832-610X,1496-8975
DOI: 10.1007/bf03012472