Avaliação radiográfica da silhueta cardíaca pelo método de mensuração VHS (vertebral heart size) em cães da raça Poodle clinicamente normais

Pinto, Ana Carolina Brandão de Campos Fonseca; Iwasaki, Masao

doi:10.1590/s1413-95962004000400007

Cited by 12 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The ECG parameters were compatible with the references [23,25]. In relation to thoracic morphometry, most of dogs presented thorax intermediate, a common characteristic for healthy dogs of different breeds [7,20].…”

Section: Discussionsupporting

confidence: 77%

“…Some dogs (females and males) presented higher values for RL VHS, LL VHS and VD VHS in comparison to references (Table 3) [5,10]. The same was reported in Spitz, Labrador Retriever and mixed breed [4], Poodles [20] and Australian Cattle Dog [16]. However, there is no consensus on VHS values for all dog sexes, breeds and physical conformations.…”

Section: Discussionmentioning

confidence: 48%

See 1 more Smart Citation

Evaluation of Electrocardiographic Parameters, Thoracic Morphometry and Vertebral Heart Size in Clinically Normal Dogs

Margarido

Martins

Nunes

et al. 2019

Acta Scientiae. Vet.

View full text Add to dashboard Cite

Background:The Vertebral Heart Size (VHS) method sets standards for the evaluation of dog's heart size from the comparison of the cardiac dimension with the length of the thoracic vertebrae through radiographic study. Electrocardiogram (ECG) is widely used in veterinary medicine for the evaluation of electrical conduction system of the heart; however, the increase of duration and amplitude of the ECG waves can suggest the increase of cardiac chambers in dogs. The scientific literature presents electrocardiographic and VHS values for dogs of different breeds and sizes; however, there is little information on the correlation of these parameters. Therefore, the aim of this study was to evaluate the amplitude and duration of ECG waves, thoracic morphometry and VHS values, in order to correlate these parameters in clinically normal dogs. Materials, Methods & Results:Twenty healthy dogs (11 females and 9 males), without breed distinction, medium sized (14.46 ± 2.92 kg) and aged between 1 and 8 years, were evaluated through physical examination, digital ECG (frontal and precordial leads) and thorax X-ray in right lateral (RL), left lateral (LL) and ventrodorsal (VD) projections. Thoracic morphometry and VHS measurements were determined as previously described. Clinical and ECG parameters were compatible with the references in all dogs evaluated. Dogs presented thorax intermediate (75%) with the depth and width ratio (D/W ratio) > 1.0. Some individual VHS values were higher than the references and the mean VHS values in VD projection was higher than in RL and LL projections (n = 20; P < 0.05). Female and male dogs did not differ among the evaluated parameters. A positive correlation was observed between thoracic morphometry and body weight (r ≥ +0.70; P < 0.001) and a negative correlation was found between the D/W ratio and VD VHS (r = -0.62; P < 0.05). No significant correlations were observed between the age, ECG parameters, thoracic morphometry and VHS measurements. Discussion: The majority of dogs presented intermediate thorax, a common characteristic for healthy dogs of different breeds. Some dogs had higher VHS values in different projections, when compared to references. The same has been reported by others authors for diferent breeds. However, there is no consensus about VHS values for all sexes, breeds and physical conformations in dogs. In agreement with other authors, the mean value of VD VHS was higher in relation to RL and LL VHS; however, RL and LL VHS did not differ. Positive and significative correlations were observed between body weight and thorax depth, and between body weight and thorax width, confirming that larger dogs had greater thoracic measurements. The thorax type could influence the VHS, when this parameter is determined by VD projection, because was observed a negative and significative correlation between the D/W ratio and VD VHS. So, the dogs with a deeper thorax may have lower VHS values. The correlation between VHS measurements and duration and amplitude of the ECG waves was weak, possibl...

show abstract

Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 48%

Evaluation of Electrocardiographic Parameters, Thoracic Morphometry and Vertebral Heart Size in Clinically Normal Dogs

Margarido

Martins

Nunes

et al. 2019

Acta Scientiae. Vet.

View full text Add to dashboard Cite

show abstract

“…Nesse contexto o exame radiográfico do tórax, eletrocardiograma e ecocardiograma, são ferramentas importantes e indispensáveis para o diagnóstico, prognóstico e orientação no tratamento das afecções cardiovasculares (ZANDVLIET, 2005;SUTER, 1987). Para evitarem-se imagens com distorções na silhueta cardíaca o animal deve ser posicionado corretamente (PATTON;FAULKNER, 1992;ROOT;BAHR, 1998;PINTO;IWASAKI, 2004). De acordo com Lamb et al (2000), exames radiográficos devem ser realizados no mínimo em duas projeções (lateral direita e ventrodorsal/ dorsoventral) ou para maior fidedignidade são realizadas três projeções (laterais direito e esquerdo e ventrodorsal/dorsoventral).…”

Section: Introductionunclassified

Avaliação radiográfica da silhueta cardíaca, pelo método VHS (Vertebral Heart Size), de quatis (Nasua nasua, Linnaeus 1766) jovens e adultos mantidos em cativeiro

et al. 2013

View full text Add to dashboard Cite

ResumoO exame radiográfico do tórax é um método auxiliar de avaliação não invasiva, para acompanhamento da evolução de doenças cardíacas sugerindo prognósticos e orientando tratamentos. O objetivo desse trabalho foi avaliar a silhueta cardíaca de quatis adultos e jovens em relação ao número de vértebras torácicas (VHS), pelo método proposto por Buchanam e Buchele (1995) para pequenos animais. Avaliou-se 20 quatis, separados por faixa etária em grupo I (GI) sendo 8 animais de idade entre 4 e 5 meses e grupo II (GII) com 12 animais acima de 12 meses de idade. Realizou-se radiografias do tórax nas projeções ventrodorsal e laterolateral direita para determinação do eixo maior (L) e eixo menor (S), sendo a somatória de L e S o valor obtido de VHS, a relação profundidade/ largura (P/L) torácica foram obtidas e os resultados determinaram o tipo de conformação do tórax, onde resultados superiores a 1,25cm denotaram tórax tipo profundo, de 0,75 a 1,25cm tórax intermediário e resultados inferiores à 0,75cm tórax largo. Observou-se que o coração está inserido entre o quarto e o sétimo par de costelas, o VHS médio de quatis adultos saudáveis foi de 9,36±0,75 e o de jovens 8,06 ± 0, 595 unidades de vértebras e a conformação torácica predominante encontrada foi do tipo intermediária quando comparada aos cães. Os valores médios deste estudo servirão como base para interpretação do VHS na espécie, contudo um maior número animais pode ser necessário para determinação de limites morfológicos da silhueta cardíaca em quatis.

show abstract

Vertebral Heart Size in Retired Racing Greyhounds

Marín

Brown

McBRIEN

et al. 2007

Vet Radiology Ultrasound

View full text Add to dashboard Cite

The vertebral heart size (VHS) is used to objectively assess cardiac dimensions on thoracic radiographs. A high VHS suggest the presence of cardiac pathology, such as dilated cardiomyopathy, degenerative atrioventricular valvular disease, pericardial effusion, pericardioperitoneal diaphragmatic hernia, tricuspid dysplasia, ventricular septal defect, or patent ductus arteriosus, among others. However, breed or body conformation can influence the VHS. Because Greyhounds have a high prevalence of physiologic systolic murmurs associated with high aortic velocity, and large cardiac dimensions when compared with dogs of similar size, they are frequently suspected of having heart disease. The purpose of this study was to compare the VHS in normal Greyhounds with those in Rottweilers, and a group of dogs from various other breeds using both analog and digital radiology. The VHS was significantly higher in Greyhounds (P< 0.0001), when compared with Rottweilers and to other dog breeds. The mean VHS on lateral radiographs for Greyhounds was 10.5 +/- 0.1, for Rottweilers it was 9.8 +/- 0.1, and for mixed breed dogs it was 10.1 +/- 0.2. This study confirms that the relative cardiomegaly reported in necropsy and echocardiographic studies in Greyhounds is easily detected using plain radiography and the VHS.

show abstract

Avaliação radiográfica da silhueta cardíaca pelo método de mensuração VHS (vertebral heart size) em cães da raça Poodle clinicamente normais

Cited by 12 publications

References 0 publications

Evaluation of Electrocardiographic Parameters, Thoracic Morphometry and Vertebral Heart Size in Clinically Normal Dogs

Evaluation of Electrocardiographic Parameters, Thoracic Morphometry and Vertebral Heart Size in Clinically Normal Dogs

Avaliação radiográfica da silhueta cardíaca, pelo método VHS (Vertebral Heart Size), de quatis (Nasua nasua, Linnaeus 1766) jovens e adultos mantidos em cativeiro

Vertebral Heart Size in Retired Racing Greyhounds

Contact Info

Product

Resources

About