From: Anesthesia for the dog with heartworm disease: a brief, practical review
Pre-anesthesia | Premedication | Induction (titrate to effect) | Maintenance | Vasopressors Inotropes |
---|---|---|---|---|
Diphenhydramine (2 mg/kg IM) Maropitant (1 mg/kg IV) | Fentanyl (3–5 µg/kg IV, can be followed by a CRI of 5 µg/kg/h IV) | Midazolam (0.2 mg/kg IV) | Sevoflurane at a minimal concentration | Dopamine (2–5 µg/kg/min) |
Dexamethaxone (0.2 mg/kg IV once if not on NSAIDs) | Butorphanol (0.2 mg/kg IV) | Propofol (2–4 mg/kg IV) | Isoflurane at a minimal concentration | Norepinephrine (0.1–0.5 µg/kg/min IV) |
Place IV catheter and give crystalloid fluids (3–5 ml/kg/h IV) Pre-oxygenate | Hydromorphone (0.1 mg/kg IV) | Etomidate (1–2 mg/kg IV, must be preceded by midazolam) | A positive inotrope Dobutamine (5–10 µg/kg/min IV to improve cardiac contractility) | |
May need FFP for clotting factors or pRBC for anemia, give via dedicated IV catheter Decrease crystalloids to avoid volume overload | Methadone (0.1 mg/kg IV) | Alfaxalone (1–4 mg/kg IV) Lidocaine (2 mg/kg IV can be followed by a CRI of 3 mg/kg/h IV) |