Rectal temperature changes and oxygen toxicity in dogs treated in a monoplace chamber.

Abstract

Hyperbaric oxygen treatments are increasingly administered to pet dogs, using veterinary-specific monoplace chambers. The basic physiologic responses, chamber performance and oxygen toxicity rates have not yet been evaluated in dogs in a clinical setting. As a result, a series of consecutive 45-minute, 2-atmospheres absolute (atm abs) hyperbaric treatments with 100% oxygen were evaluated in a veterinary rehabilitation center (n = 285). 65 dogs with a mean body weight of 21 ± 15 kg (1.4-71 kg) were treated with an average of four sessions each. The mean rectal temperature of canine patients decreased 0.07 degrees C (0.1 degrees F) during treatments (p = 0.04). Intra-chamber temperature and humidity both increased: +1.0 degrees C (1.7 degrees F, p < 0.0001) and +5.7% (p < 0.0001), respectively. The mean maximal oxygen concentration measured before depressurization of the veterinary-specific commercial chamber was 98.0 ± 0.9%. No strong correlations (r > 0.75) were identified between body weights, body condition scores, maximal oxygen concentrations, starting or ending rectal temperature, chamber humidity and chamber temperature. Oxygen toxicity was not observed during the observational period. Patients were most commonly treated for intervertebral disc disease (n = 16 dogs) and extensive traumatic wounds (n = 10 dogs), which represented a large number of the total study sessions (19% and 16%, respectively).

• Authors: Justin Shmalberg, Wendy Davies, Stacy Lopez, Danielle Shmalberg, Jose Zilberschtein
• Journal: Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc (Undersea Hyperb Med) 2015 Jan-Feb Vol. 42 Issue 1 Pg. 95-102 ISSN: 1066-2936 [Print] United States
• PMID: 26094309 (Publication Type: Journal Article)

Chemical References

• Oxygen

Topics

• Animals
• Body Temperature (physiology)
• Body Weight
• Dog Diseases (physiopathology, therapy)
• Dogs
• Humidity
• Hyperbaric Oxygenation (adverse effects, instrumentation, veterinary)
• Hypothermia (veterinary)
• Oxygen (adverse effects, analysis)
• Rectum (physiology)
• Time Factors