Abstract
Ultrasound-guided local anesthesia techniques are becoming increasingly common in veterinary medicine. The objective of this study is to evaluate the analgesic efficacy of the rectus sheath block (RSB) in female dogs undergoing elective ovariohysterectomy, using different volumes of bupivacaine (0.25 mL/kg and 0.5 mL/kg per hemiabdomen). Sixty healthy female dogs will be selected after ph…