Local Anesthetic Techniques For Ovariohysterectomies
Intraperitoneal lavage technique for dogs and cats INDICATIONS: Feline and canine ovariohysterectomies. (This technique may be more effective than mesovarium block because analgesia will be provided at both the ovarian and uterine surgical sites.) INSTRUCTIONS: Select and calculate the full dose of a local anesthetic, i.e., lidocaine (cats = 2–4 mg/kg, dogs = 4–6 mg/kg), bupivacaine (cats = 1 mg/kg, dogs = 2 mg/kg), or ropivacaine (cats = 1 mg/kg, dogs = 2 mg/kg). If necessary, dilute the drug with saline–the total volume needs to be a minimum of 0.4–0.6 mL/kg to lavage or bathe the entire abdominal cavity. Immediately after making the incision or after completing the abdominal procedure but before closing the incision, “bathe” or “lavage” the peritoneal cavity with the local anesthetic by instilling it into the abdomen through the incision (literally just squirting it in the abdomen).* Close the incision as usual, leaving the local anesthetic in the abdomen.