Anesthesia, Analgesia, and Surgery in Wildlife
Core concepts
Anesthesia in wildlife requires species-specific knowledge of physiology, drug selection, monitoring, and recovery. Candidates should understand inhalant and injectable agents, premedication, analgesia, monitoring (heart rate, respiration, temperature, reflexes, capnography, pulse oximetry), and the risks of hypothermia and hypotension. Birds and reptiles have unique respiratory anatomy and temperature dependence. Surgery topics include wound closure, fracture fixation, and aseptic technique. Understanding pain recognition and multimodal analgesia is essential.
Traps in questions
Traps include: (1) using a domestic mammal protocol without adjusting for species; (2) failing to support body temperature during anesthesia; (3) underestimating pain in prey species; (4) using ketamine alone without analgesia; (5) ignoring the risk of regurgitation and aspiration in birds; and (6) inadequate monitoring during recovery.
Worked rule of thumb
Use the "monitor and support" rule: every anesthetic event includes temperature support, fluid support, and continuous monitoring. Example: a bird undergoing fracture repair should be preoxygenated, kept warm, monitored with pulse oximetry and reflexes, and recovered in a quiet, dark, warm enclosure with analgesia provided before recovery.