DRUGS AND ANESTHESIA How to Anesthetize Donkeys for Surgical Procedures in the Field Lori A. Bidwell, DVM, Diplomate ACVA Author’s address: Ross University School of Veterinary Medicine, PO Box 334, St. Kitts, West Indies; e-mail:
[email protected]. © 2010 AAEP. 1. Introduction ing a local block where a catheter will be placed and Donkeys are an important part of the work force in making a small skin incision with a surgical blade much of the world. Practitioners working with before placing an intravenous catheter is recom- donkeys in the United States and those participat- mended. Intubation is more difficult because of ing in equitarian initiatives abroad should under- caudal angulation of the larynx, a pharyngeal diver- stand the difference between donkeys and horses in ticulum, excess pharyngeal mucosa, and long paired relation to anesthesia. Although it is tempting to laryngeal saccules. Additionally, nasal intubation 1 treat a donkey like a horse, there are important is complicated by narrow nasal passages. Drug differences in relation to handling and drug doses. metabolism is elevated in donkeys compared with Additionally, it is important to understand alterna- horses, resulting in the use of higher doses and more 2–6 tive anesthetic protocols because a practitioner may frequent dosing intervals. The only known ex- be limited to minimal or alternative drugs when ception to this is the administration of guaifenesin, working in a developing country. which seems to require lower dosing because respi- ratory arrest is easy to achieve when using doses 7 2. Behavior and Physiology appropriate for a horse. A tame donkey can be easy to handle but a feral or minimally handled donkey can be frustrating.