2000
DOI: 10.1051/vetres:2000124
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Morphology and amplitude values of the electrocardiogram of Spanish-bred horses of different ages in the Dubois leads system

Abstract: -The aim of this work was to record the modifications of the form and amplitude of the electrocardiographic tracings during growth using the Dubois system and to study its sensibility to these physiological changes. This work was carried out on 179 healthy, young and adult Spanish-bred horses (98 females and 81 males). One electrocardiogram (ECG) was obtained from each horse using the Dubois leads system. The bifid shape deflection of the P wave was generally more frequent than the simple one in animals at 4 m… Show more

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Cited by 16 publications
(17 citation statements)
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“…A morfologia da onda P bífida (+/+) observada na maioria dos animais em repouso é um achado normal no eletrocardiograma do Puro Sangue Inglês, do American Trotter (Fregin, 1982), do Puro Sangue Árabe (Yonezawa et al, 2007), do Mangalarga (Vicenzi et al, 2000) e de equinos da raça Espanhola (Ayala et al, 2000), podendo ser dividida em componentes I (PI) e II (PII). Esse fenômeno pode ser atribuído aos diferentes pontos de ativação do átrio, ________________________________________________________________________…”
Section: Discussionunclassified
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“…A morfologia da onda P bífida (+/+) observada na maioria dos animais em repouso é um achado normal no eletrocardiograma do Puro Sangue Inglês, do American Trotter (Fregin, 1982), do Puro Sangue Árabe (Yonezawa et al, 2007), do Mangalarga (Vicenzi et al, 2000) e de equinos da raça Espanhola (Ayala et al, 2000), podendo ser dividida em componentes I (PI) e II (PII). Esse fenômeno pode ser atribuído aos diferentes pontos de ativação do átrio, ________________________________________________________________________…”
Section: Discussionunclassified
“…Senta et al (1970), em equinos de trote, e Ayala et al (2000), em equinos da raça Espanhola, descreveram que o aumento da frequência cardíaca durante o exercício fez com que houvesse a fusão dos dois componentes e, assim, a onda P assumiu um contorno monofásico positivo. Em contraste, neste estudo observou-se a inversão da polaridade, sendo que a onda P apresentou-se difásica (-/+).…”
Section: ____________________________________________________________unclassified
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“…Standard ECG patterns and the associations of these patterns with specific types of athletic activity have been described for several types of horses, including Mangalarga Marchador (Diniz et al 2008), classic riding horses (Diniz et al 2011), English Thoroughbred (Fernandes et al 2004), Lusitano (Melchert et al 2012), Andaluz (Ayala et al 1995, Ayala et al 1998, Ayala et al 2000, Quarter Horses (Mantovani et al 2013, Palma et al 2013, ponies (Buss et al 1975, Lombard et al 1984, Rezakhani et al 2010, Arabian (Yonezawa et al 2009, Dumont et al 2010, Dumont et al 2011) and crossbred polo horses (Bello et al 2012). However, the ECG patterns of the American Miniature Horse breed have not been studied.…”
Section: Introductionmentioning
confidence: 99%
“…These findings are in accordance with those of Fregin (4), who described the biphasic configuration in lead II as the most frequent in adult Thoroughbred and Standardbred horses. However, in studies by Ayala et al (2), the most commonly observed in horses over 4 years of age was positive T wave. Perhaps, this is related to the racial difference of the group.…”
Section: Discussionmentioning
confidence: 91%