Dead space volumes in cats and dogs with small body mass ventilated with a fixed tidal volume

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUFAPE Veterinary Intensive Care Unit-
Autor(es): dc.contributorUniversity of Guelph-
Autor(es): dc.creatorGirotto, Carolina H.-
Autor(es): dc.creatorOspina-Argüelles, Diego A.-
Autor(es): dc.creatorTeixeira-Neto, Francisco J.-
Autor(es): dc.creatorAssis-Vieira, Paulo V.-
Autor(es): dc.creatorMartins, Alessandro R.C.-
Autor(es): dc.creatorKerr, Carolyn-
Data de aceite: dc.date.accessioned2025-08-21T15:09:21Z-
Data de disponibilização: dc.date.available2025-08-21T15:09:21Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.vaa.2024.06.009-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298250-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298250-
Descrição: dc.descriptionObjective: To compare the portion of tidal volume (VT) ventilating dead space volumes in nonbrachycephalic cats and dogs with small body mass receiving volume-controlled ventilation (VCV) with a fixed VT. Study design: Prospective, experimental study. Animals: A group of eight healthy adult cats and dogs [ideal body weight (IBW): 3.0 ± 0.5 and 3.8 ± 1.1 kg, respectively]. Methods: Anesthetized cats and dogs received VCV with a 12 mL kg–1 VT (inspiratory pause ≥ 0.5 seconds). Respiratory rate (fR) was adjusted to maintain normocapnia. Airway dead space (VDaw) and alveolar tidal volume (VTalv) were measured by volumetric capnography. Physiological dead space (VDphys) and VDphys/VT ratio were calculated using the Bohr–Enghoff method. Data recorded before surgery were compared by an unpaired t-test or Mann–Whitney U test (p < 0.05 considered significant). Results: The IBW (p = 0.07), PaCO2 (p = 0.40) and expired VT [VT(exp)] (p = 0.77) did not differ significantly between species. The VDaw (mL kg–1) was lower in cats (3.7 ± 0.4) than in dogs (7.7 ± 0.9) (p < 0.0001). The VTalv (mL kg–1) was larger in cats (8.3 ± 0.7) than in dogs (4.3 ± 0.7) (p < 0.0001). Cats presented a smaller VDphys/VT ratio (0.33 ± 0.03) and VDphys (4.0 ± 0.3 mL kg–1) than dogs (VDphys/VT: 0.60 ± 0.09; VDphys: 7.2 ± 1.4 mL kg–1) (p < 0.0001). The fR and minute ventilation (VT(exp) × fR) were lower in cats than in dogs (p = 0.048 and p = 0.038, respectively). Conclusions and clinical relevance: A fixed VT results in more effective ventilation in cats than in dogs with small body mass because of species-specific differences in and VDaw and VDphys. Because of the smaller VDaw and VDphys in cats than in dogs, a lower fR is required to maintain normocapnia in cats.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionDepartment of Veterinary Surgery and Animal Reproduction Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista (UNESP), SP-
Descrição: dc.descriptionDepartment of Anesthesiology Faculdade de Medicina Universidade Estadual Paulista (UNESP), SP-
Descrição: dc.descriptionUFAPE Veterinary Intensive Care Unit, SP-
Descrição: dc.descriptionDepartment of Clinical Studies Ontario Veterinary College University of Guelph-
Descrição: dc.descriptionDepartment of Veterinary Surgery and Animal Reproduction Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista (UNESP), SP-
Descrição: dc.descriptionDepartment of Anesthesiology Faculdade de Medicina Universidade Estadual Paulista (UNESP), SP-
Formato: dc.format585-593-
Idioma: dc.languageen-
Relação: dc.relationVeterinary Anaesthesia and Analgesia-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectairway dead space-
Palavras-chave: dc.subjectcats-
Palavras-chave: dc.subjectphysiological dead space-
Palavras-chave: dc.subjectvolumetric capnography-
Título: dc.titleDead space volumes in cats and dogs with small body mass ventilated with a fixed tidal volume-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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