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Bloqueios dos nervos ciático e femoral guiado por neuroestimulador em Chinchilla lanigera submetida a osteossíntese de tíbia / Nerve stimulator-guided ciatic and femoral nerve block during tibial osteosynthesis in Chinchilla lanigera

Lemos, Vanessa Caroline da Costa; Vieira, João Victor Romano; Gusmão, Isabella Menezes; Gondim, Leane Souza Queiroz; Barbosa, Vivian Fernanda; Nunes, Talyta Lins.
Acta sci. vet. (Online); 47(suppl.1): Pub. 468, 27 dez. 2019. ilus
Artigo em Português | VETINDEX | ID: vti-25776


Background: Nociceptive stimulation in orthopedic surgery requires effective pain management to ensure trans andpostoperative patient comfort. Several techniques can be used for this, and multimodal analgesia protocols such as guidedlocoregional blocks provide a balanced effect, as they enable the use of low-dose anesthetics and offer rapid recovery. Thebenefits of specific nerve blocks in domestic animals are well known; however, there are few reports that have ascertainedtheir safety in wild species. This report is aimed at describing the successful use of neurolocalizer-guided sciatic andfemoral nerve blocks during tibial osteosyntheses in a chinchilla.Case: A 9-month-old chinchilla weighing 0.56 kg was referred for surgery for proximal and mid-diaphyseal tibia fracturesresulting from trauma. Following preanesthetic evaluation, the animal received intramuscular dexmedetomidine (15 µgkg1) as preanesthetic medication. Sedation was apparent after 15 min and was verified by a decreased activity, the animalallowing manipulation, absence of the eyelid and righting reflexes, and limb movement after clamping removal of limbafter clamping. After achieving sedation, anesthesia was induced and maintained with sevoflurane (FiO2 = 1.0), suppliedthrough a nasoral mask. Sciatic and femoral nerve blocks were performed with the aid of a neurostimulator. A needle wasinserted into the femoral triangle, cranial to the femoral artery, and into the depression between the sciatic tuberosity andthe greater femoral trochanter. The neurostimulator was set at a pulse frequency of 1 Hz, pulse duration of 0.1 ms andinitial current of 0.6 mA. The needle was advanced toward the nerves until muscle contractions were observed, and thecurrent was gradually reduced until contractions were manifested at a minimum current...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1