Standing sedation management of a domesticated reindeer for third eyelid removal

Abstract

Background: Reindeer are becoming popular animals within petting farms. Few case reports describe the sedation of
domesticated reindeer, but none describe the use of ocular local anesthetic blocks in this species.
Case Description: A 9-year-old, female, Svalbard reindeer (Rangifer tarandus platyrhynchus) presenting for removal
of a squamous cell carcinoma involving the third eyelid. Standing sedation was performed using initial boluses of
medetomidine and butorphanol via intramuscular injection before catheter placement and maintenance with a variable
rate infusion of medetomidine. Supraorbital, auriculopalpebral, infratrochlear blocks and local infiltration of the base of
the third eyelid were performed using mepivacaine. Following the surgical removal of the third eyelid, atipamazole was
administered intramuscularly to antagonize the effects of medetomidine. The patient recovered without complications.
Conclusion: Medetomidine-butorphanol in combination with local anesthetic blocks provided a sufficient plane of
sedation and analgesia for extra ocular surgery in a domesticated reindeer.