Computed tomographic comparison of esophageal hiatal size in brachycephalic and non-brachycephalic breed dogs.
Vet Surg
; 49(8): 1509-1516, 2020 Dec.
Article
em En
| MEDLINE
| ID: mdl-32949429
ABSTRACT
OBJECTIVE:
To determine whether an anatomical difference in esophageal hiatus (EH) size exists between brachycephalic and nonbrachycephalic dogs. STUDYDESIGN:
Retrospective clinical study. ANIMALS Client-owned dogs (n = 87).METHODS:
Clinical records and images of dogs that underwent computed tomography between June 2015 and September 2018 were reviewed. For the first part of the study, EH and aortic (Ao) cross-sectional surface areas were measured in brachycephalic (group 1) and nonbrachycephalic dogs of similar body size (<15 kg) without respiratory or gastroesophageal (GE) signs (group 2) by using multiplanar reconstruction. Esophageal hiatusaortic ratio was calculated. In the second part of the study, absolute EH measurements were also compared in weight-matched (WM) dogs (8-10 kg) from groups 1 and 2.RESULTS:
Mean (±SD) of EHAo values for group 1 (8.1 ± 2.8) were higher (P < .0001) than those for group 2 (3.7 ± 1.1). In addition, EH measurements of 20 WM dogs in group 1 were higher than those of 20 dogs in group 2 (P < .05).CONCLUSION:
Esophageal hiatus cross-sectional surface area (directly and indirectly measured) in brachycephalic dogs was considerably larger than that in nonbrachycephalic dogs of generally similar body size. CLINICALSIGNIFICANCE:
Results of this study provide evidence to support the existence of a specific anatomical factor that could likely correlate to functional GE alterations (eg, regurgitation, gastroesophageal reflux, and sliding hiatal hernia) commonly seen in brachycephalic dogs.
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Base de dados:
MEDLINE
Assunto principal:
Refluxo Gastroesofágico
/
Craniossinostoses
/
Doenças do Cão
/
Hérnia Hiatal
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article