Immobilization of free-ranging Hoffmann´s two-toed and brown-throated three-toed sloths using ketamine and medetomidine: a comparasion of physiologic parameters
Free-ranging Hoffmann’s two-toed sloths (Choloepus hoffmanni; n526) and brown throated three-toed sloths (Bradypus variegatus; n515) were manually captured and immobilized with 2.5 mg/kg ketamine + 0.02 mg/kg medetomidine administered intramuscularly. Physical examinations were conducted on each s...
| Autores Principales: | Hanley, Christopher S., Siudak-Campfield, Joanna, Paul-Murphy, Joanne, Vaughan, Christopher, Ramírez, Oscar, Keuler, Nicholas S., Sladky, Kurt K. |
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| Formato: | Artículo |
| Idioma: | Inglés |
| Publicado: |
Universidad Nacional, Costa Rica.
2022
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| Materias: | |
| Acceso en línea: |
http://hdl.handle.net/11056/23522 http://www.bioone.org/doi/full/10.7589/0090-3558-44.4.938 |
| Sumario: |
Free-ranging Hoffmann’s two-toed sloths (Choloepus hoffmanni; n526) and brown throated three-toed sloths (Bradypus variegatus; n515) were manually captured and immobilized
with 2.5 mg/kg ketamine + 0.02 mg/kg medetomidine administered intramuscularly. Physical
examinations were conducted on each sloth 10 min after initial injection, and blood, fecal, and
ectoparasite samples were collected. Heart rate, respiratory rate, body temperature, indirect
systolic blood pressure, and indirect peripheral oxygen saturation were monitored every 5 min for
the duration of anesthesia. After 45 min, atipamazole (0.1 mg/kg) was administered intramuscu larly, as an antagonist to medetomidine, in order to facilitate recovery. All recoveries were smooth,
rapid, and uneventful. Physiologic parameters were compared across time, gender, and species. All
sloths, regardless of species and gender, demonstrated a time-dependent decrease in heart rate
and blood pressure, and an increase in respiratory rate, during the course of anesthesia. Peripheral
oxygen saturation was similar for all sloths over time. There were significant species differences for
heart rate (Choloepus . Bradypus), respiratory rate (Choloepus . Bradypus), and systolic blood
pressure (Bradypus . Choloepus), while there were significant gender differences for body
temperature (males . females) and blood pressure (males . females). Results of this study
suggest that the ketamine–medetomidine mixture, as described above, is a safe and effective
anesthetic combination in free-ranging two- and three-toed sloths, although peripheral blood
pressure should be monitored during anesthesia. |
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