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Outcome following inhalation anesthesia in birds at a veterinary referral hospital: 352 eases (2004-2014).

Objective: To determine the outcome in birds undergoing inhalation anesthesia and identify patient or procedure variables associated with an increased likelihood of anesthesia-related death.

Design: Retrospective case series.

Animals: 352 birds that underwent inhalation anesthesia.

Procedures: Medical records of birds that underwent inhalation anesthesia from January 1, 2004 through December 31, 2014 at a single veterinary referral hospital were reviewed. Data collected included date of visit, age, species, sex, type (pet, free ranging, or wild kept in captivity), body weight, body condition score, diagnosis, procedure, American Society of Anesthesiologists status, premedication used for anesthesia, drug for anesthetic induction, type of maintenance anesthesia, route and type of fluid administration, volumes of crystalloid and colloid fluids administered, intraoperative events, estimated blood loss, duration of anesthesia, surgery duration, recovery time, recovery notes, whether birds survived to hospital discharge, time of death, total cost of hospitalization, cost of anesthesia, and nadir and peak values for heart rate, end-tidal partial pressure of carbon dioxide, concentration of inhaled anesthetic, and body temperature. Comparisons were made between birds that did and did not survive to hospital discharge.

Results: Of 352 birds, 303 (86%) were alive at hospital discharge, 12 (3.4%) died during anesthesia, 15 (4.3%) died in the intensive care unit after anesthesia, and 22 (6.3%) were euthanatized after anesthesia. Overall, none of the variables studied was associated with surviving versus not surviving to hospital discharge.

Conclusions and clinical relevance: Results confirmed previous findings that indicated birds have a high mortality rate during and after anesthesia, compared to mortality rates published for dogs and cats.

J Am Vet Med Assoc. 2017;251:814-817.

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Title Annotation:Selected Abstracts from the Literature
Author:Seamon, A.B.; Hofmeister, E.H.; Divers, S.J.
Publication:Journal of Avian Medicine and Surgery
Date:Dec 1, 2017
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