Ultrasound guided nerve block anaesthesia of the sciatic and femoral nerve in dogs Sharma Pranhal1, Kumar Adarsh2,†, Sharma Deepti3, Kumar Amit3, Kumar Rohit, Tyagi S.P.2, Ilyas Mohammed1 1MVSc Scholar, Department of Surgery and Radiology, DGCN College of Veterinary and Animal Science, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062 (HP) 2Professor, Department of Surgery and Radiology, DGCN College of Veterinary and Animal Science, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062 (HP) 3Assistant Professor, Department of Surgery and Radiology, DGCN College of Veterinary and Animal Science, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062 (HP) †Corresponding author; E-mail: adarsh9kan@gmail.com
Online Published on 20 May, 2023. Abstract The objective of this study was to recognize the normal ultrasonographic appearance of the sciatic and femoral nerves and perform the ultrasound guided blockade of these nerves under the monitoring of electrical nerve stimulator. Twelve client-owned dogs presented for major and minor surgical procedures of the hind limb were selected for the study. The echogenic needle inserted for local infiltration around the nerve was tracked in real-time using USG guidance, and a peripheral nerve stimulator was employed to validate needle proximity to the nerve. Lignocaine 2% @ 0.3 mL/kg and 0.2 mL/kg was infiltrated around the sciatic and femoral nerves, respectively. To evoke the motor response in the muscle, an initial current of 1.5 mA at frequency of 1 Hz for the duration of 0.1 ms was applied with the electrical nerve stimulator. Ultrasonographically, the sciatic and femoral nerves have a central hypoechoic to anechoic lumen surrounded by the hyperechoic connective tissue. The sciatic and femoral nerves were easily identified in all animals and successful nerve block was performed to enable surgeries distal to the stifle joint. The sensitivity and accuracy of the nerve blockade increased with the USG guidance and surveillance by the electrical nerve stimulator. Top Keywords Dogs, Sciatic and femoral nerve block, Ultrasound guided nerve block. Top |