Heart to spine measurements to detect left atrial enlargement in dogs with mitral insufficiency
Sánchez Salguero, Xavier (Universitat de Lleida. Departament de Ciència Animal)
Prandi Chevalier, David (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Llabrés-Díaz, Francisco (University of London. Royal Veterinary College (Hatfield, Regne Unit))
García Manzanilla, Edgar (University College Dublin. School of Veterinary Medicine)
Badiella Busquets, Llorenç (Universitat Autònoma de Barcelona. Servei d'Estadística Aplicada)
Bussadori, Claudio (Clínica Veterinaria Gran Sasso, Milano, Italy)

Data:	2019
Resum:	Radiography is useful to determine left atrial (LA) size when echocardiography is not available. Recently, the authors have described Radiographic Left Atrial Dimension (RLAD) as a new radiographic measurement to assess LA size. The objective of this study was to assess the clinical usefulness of 2 new radiographic measurements to detect and quantify left atrial enlargement (LAE) compared to RLAD and using left atrium to aortic root (LA/Ao) ratio as gold standard. These new measurements, bronchus-to-spine (Br-Spine) and RLAD-to-spine (RLAD-Spine) may be more precise in cases were LA boundaries are not well defined. Fifty dogs, 25 with and 25 without LAE were recruited. Reference LA/Ao ratio was assessed by 2D echocardiography and LAE was considered if LA/Ao > 1. 6. Br-spine was measured as a straight vertical line from the main stem bronchus to the ventral border of the vertebra situated immediately dorsal to the heart base. RLAD-Spine was measured from RLAD endpoint perpendicularly to spine. The correlation of RLAD, Br-Spine and RLAD-Spine methods with LA/Ao and their sensitivity and specificity for detecting LAE were calculated. Receiver Operating Characteristic (ROC) curves were used to estimate the optimal cut-off for each method. Correlations between Br-Spine, RLAD-Spine, RLAD and LA/Ao ratio were − 0. 66, − 0. 76 and 0. 89 respectively (P < 0. 001). Sensitivity at the optimal cut-off values for detecting LAE were 32. 0, 64. 0 and 96. 0%, respectively. Specificity was 96. 0% in all cases. Br-Spine and RLAD-Spine were less sensitive radiographic measurements than RLAD in detecting LAE in dogs. Both Br-Spine and RLAD-Spine may not be good alternatives to RLAD.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Cardiologia veterinària ; Gossos ; Dog ; Left atrial size ; Mitral valve disease ; Radiographic measurement ; RLAD
Publicat a:	Irish Veterinary Journal, Vol. 72 (november 2019) , ISSN 2046-0481

DOI: 10.1186/s13620-019-0152-6
PMID: 31832167

4 p, 1005.9 KB

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