title: Evaluation of a portable oxygen concentrator to provide fresh gas flow to dogs undergoing anesthesia.
abstract: This study evaluated the ability of a portable oxygen concentrator (POC) to provide fresh gas to an anesthetic machine via an Ayre's T-piece or a Bain circuit. Fraction of inspired oxygen (FiO2) was compared at flows of 0.5 to 3.0 L/min. Measured FiO2 was 96% at flow rates ≥ 1 L/min. Mean battery life at 1.0, 2.0, and 3.0 L/min was 4.21 ± 0.45, 2.62 ± 0.37 and 1.5 ± 0.07 hours, respectively. The POC proved to be useful and effective during 2 power outages. The POC was sufficient to prevent rebreathing in 70% of dogs using a T-piece circuit and 20% of dogs with a Bain circuit. A significant negative correlation between inspired CO2 and O2 flow rates was noted. A significant positive correlation between inspired CO2 and ETCO2 was documented. The occurrence of hypercarbia was associated with low O2 flow. Battery back-up was essential during power outages. The POC can be effectively used for delivery of anesthesia.
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Jessica
authors.initials: J
authors.lastname: Burn
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Nigel A
authors.initials: NA
authors.lastname: Caulkett
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Marta
authors.initials: M
authors.lastname: Gunn
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Claire
authors.initials: C
authors.lastname: Cooney
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Kutz
authors.affiliation: Department of Veterinary Clinical and Diagnostic Sciences (Burn, Caulkett, Boysen), Department of Ecosystem and Public Health (Kutz), University of Calgary Faculty of Veterinary Medicine, Calgary, Alberta; City of Calgary Bylaw Services, Calgary, Alberta (Gunn, Cooney).
authors.forename: Søren R
authors.initials: SR
authors.lastname: Boysen
mesh_terms: D000758:Anesthesia / Q000379:methods / Q000662:veterinary*; D000818:Animals; D004285:Dogs; D005260:Female; D008297:Male; D008904:Miniaturization; D010100:Oxygen / Q000008:administration & dosage*; D010865:Pilot Projects; D012122:Ventilators, Mechanical / Q000662:veterinary*
chemical_list: D010100:Oxygen