Veterinary Anesthesia Dose Calculator

This calculator is an educational reference tool for licensed veterinary professionals (veterinarians, veterinary nurses, veterinary technicians) to cross-check dose calculations. It should never be used to select drug doses or administer anesthesia without direct veterinary supervision and species-specific prescribing.

The standard formula is: Total dose (mg) = body weight (kg) x dose rate (mg/kg). Volume to draw (mL) = total dose (mg) / drug concentration (mg/mL). This is identical to the general veterinary medication dosing formula and applies to injectable pre-medications and induction agents.

A CRI (Constant Rate Infusion) delivers a drug at a steady rate throughout the procedure. The CRI rate (mL/hr) = [dose rate (mcg/kg/min) x weight (kg) x 60] / [drug concentration (mcg/mL)]. CRI calculations require exact syringe driver settings and must be confirmed by a licensed veterinarian.

Common injectable induction agents in small animal veterinary practice include propofol (4-6 mg/kg IV dogs, 4-8 mg/kg IV cats), alfaxalone (2-3 mg/kg IV dogs, 5 mg/kg IV cats), and ketamine/midazolam combinations. Exact dose ranges vary by patient status, pre-medication used, and species. All doses must be prescribed by a licensed veterinarian.

Anesthetic agents have narrow therapeutic windows. Overdose can cause respiratory and cardiovascular depression leading to death. Patient factors including age, body condition score, concurrent disease, organ function, and prior medications all significantly alter safe dose ranges. Calculator outputs must never replace clinical judgment and direct veterinary prescription.