Femoral nerve block by pre-iliac approach and sciatic nerve block by parassacral approach in a dog undergoing unilateral colocephalectomy - case report

ABSTRACT Multimodal anesthesia, which combines locoregional blocks with systemic analgesia, is widely used in veterinary orthopedic procedures to provide effective pain control. This case report describes the use of femoral nerve block via a pre-iliac approach and sciatic nerve block via a parassacral approach in a dog undergoing unilateral femoral head and neck excision. The techniques were performed with the aid of a nerve stimulator, using 0.25% bupivacaine (1.5mg/kg). The anesthetic protocol also included the administration of gabapentin (5mg/kg), dipyrone (25mg/kg), meloxicam (0.1mg/kg), ketamine (0.6mg/kg/h), methadone (0.3mg/kg), and fentanyl (5µg/kg/h), forming a multimodal protocol. The effectiveness was assessed based on physiological parameters, sensory-motor block of the limb, and pain scores, demonstrating effective pain control and hemodynamic stability during the perioperative period. In conclusion, the femoral and sciatic nerve blocks were efficient in providing analgesia for the coxofemoral joint, making the procedure safe and comfortable for the patient.