Avaliação eletrocardiográfica de equinos após exercício de polo (baixo handicap)

Bello, Camila A.O.; Dumont, Cinthia B.S.; Souza, T. C. de; Palma, Joana Marchesini; Lima, Eduardo Maurício Mendes de; Godoy, Roberta Ferro de; Neto, G. B. Pereira; Moreira, Meryonne

doi:10.1590/s0100-736x2012001300010

Cited by 8 publications

(11 citation statements)

References 18 publications

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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%

Electrocardiographic parameters of the American Miniature Horse: influence of age and sex

et al. 2016

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RESUMO.-[Parâmetros eletrocardiográficos de equinos Mini Horse: influência da idade e sexo.]A cardiologia veterinária possui crescente importância na medicina equina. Existem estudos de padronização dos parâmetros eletrocardiográficos de muitas raças, de acordo com sua estatura e aptidão. No entanto, não há na literatura trabalhos com os equinos da raça Miniature Horse. Os objetivos deste trabalho foram avaliar a configuração do traçado do eletrocardiograma (ECG) em repouso, de equinos desta raça, além de verificar a influência do sexo e da idade sobre os parâmetros eletrocardiográficos desses animais. Foram utilizados 203 equinos desta raça, hígidos, sendo 143 fê-meas e 60 machos, classificados em quatro faixas etárias (potros, sobreanos, adultos e idosos). Os exames eletrocardiográficos foram realizados por eletrocardiograma computadorizado (TEB), e os parâmetros foram avaliados em seis derivações do plano frontal (DI, DII, DIII, aVR, aVL e aVF) e base-ápice (BA). A frequência cardíaca (FC) diminuiu com a progressão da idade, e foi maior nos machos do que nas fêmeas. O ritmo mais comum em ambos os se- The veterinary cardiology has growing importance in equine medicine. There are studies of standardization of electrocardiographic parameters of many races, according to their stature and ability. However, no studies are in the literature with the American Miniature Horse. To evaluate the electrocardiogram (ECG) tracing configuration of this breed at rest and to verify the influence of age and sex on ECG parameters, 203 horses including 143 females and 60 males were divided into four age groups (foals, yearlings, adults and elderly). Electrocardiographic parameters were performed by computerized electrocardiogram (TEB), and the parameters were evaluated in six leads of frontal plane (Lead I, II, III, aVR, aVL and aVF) and base-apex (BA). Heart rates (HR) decreased with increasing age were higher in males than in females. Sinus tachycardia followed by sinus arrhythmia was dominant in both sexes. The cardiac axis was higher in males and ranged between 120° and 150° for foals, 30° and 60° for yearlings and adults, and 60° and 90° for the elderly. The P wave was bifid in several animals. The P-wave amplitude and T-wave duration from lead II and BA were larger in males than in females. The majority of the animals exhibited ST segment depression and a negative T-wave. The most common QRS complex morphology was Qr. Differences were observed between the electrocardiographic tracings of males and females, and age influenced the ECG parameters. Therefore, this study established the ECG patterns for the American Miniature Horse breed and could be used to determine the influence of age and sex on several of the studied variables. . A amplitude da onda P e a duração da onda T foram maiores nos machos do que nas fêmeas na DII e BA. A maioria dos animais apresentou segmento ST infradesnivelado e onda T negativa. A morfologia do complexo QRS mais encontrada em todos os casos foi Qr. Este estudo permitiu estabelecer os padrões ele...

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Section: Introductionmentioning

confidence: 99%

Electrocardiographic parameters of the American Miniature Horse: influence of age and sex

et al. 2016

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“…HS from the athlete group was close to 100 ms, indicating that depolarization period, heart size and exercise were probably related to each other (Bello et al, 2012). Nonetheless, wagon traction group HS was low and close to values obtained for the control group, suggesting that there could be poor adaptation of the cardiovascular system for traction work.…”

Section: Discussionmentioning

confidence: 51%

“…Therefore, these authors established the heart score to estimate the heart size, correlating it with animal performance. Athletic horses (with good physical conditioning) present heart score values close to or greater than 100 ms (Bello et al, 2012). We found no literature about heart score in wagon traction horses.…”

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Physical and electrocardiographic evaluation of horses used for wagon traction

Bomfim

Sattin

Carvalho

et al. 2017

Arq. Bras. Med. Vet. Zootec.

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The objective of this research was to evaluate the electrocardiogram (ECG) of horses used for wagon traction and to compare the results with the parameters obtained from inactive horses or horses submitted to a training routine. Fifty-six 3-15-year-old healthy horses (22 females and 34 males) were divided into three groups: control (without a work routine; N=21), wagon traction (N=25) and athlete (N=10) and submitted to physical examination and ECG (at rest). The rhythm, heart rate (HR), amplitude and duration of ECG waveforms and intervals were obtained from the frontal plane and base-apex leads. Heart score (HS) was calculated using the arithmetic mean of QRS duration in LI, LII and LIII. Measurements of ECG waves were smaller in control group, in comparison with wagon traction and athlete groups, suggesting that exercise can change ECG. Similar results were observed in the wagon traction and athlete groups, but the electrophysiological adjustments to exercise were not the same for these groups.Keywords: ECG, equine, cart horses, cardiovascular system, heart score RESUMO O objetivo deste trabalho foi avaliar o eletrocardiograma (ECG) de cavalos que tracionavam carroças (carroceiros; N=25), comparando os resultados com os parâmetros de cavalos que não realizavam essa atividade (controles; N=21), ou que apresentavam uma rotina de treinamento (atletas; N=10

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“…Em equinos, a avaliação eletrocardiográfica é também empregada na determinação do desempenho atlético e eficácia do treinamento (Lightowler et al 2004, Bello et al 2012, detecção de distúrbios eletrolíticos (Babusci & López 2006) e acompanhamento de cardiopatias (Marr & Bowen 2010).…”

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Estudo eletrocardiográfico de éguas da raça Crioula

et al. 2015

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RESUMO.-A eletrocardiografia constitui ferramenta indispensável no diagnóstico de arritmias e distúrbios de condução elétrica do coração de equinos, bem como na determinação do prognóstico de cardiopatias, do desempenho atlético, da eficiência do treinamento, além de sugerir distúrbios eletrolíticos. No entanto, as variáveis eletrocardiográficas em equinos podem sofrer influência de diversos fatores como a idade, sexo, raça e constituição morfofuncional, dentre outas, tornando-se necessário conhecer as características de normalidade para as diferentes raças e fases do desenvolvimento. Descendentes dos cavalos da Península Ibérica, a raça Crioula foi trazida ao continente americano há mais de quatro séculos, resultando em características físicas e de resistência únicas, dada por sua seleção natural. Desta forma, objetivou-se com o presente trabalho avaliar e comparar os aspectos eletrocardiográficos The electrocardiography is an indispensable diagnostic tool to detect heart arrhythmias and electrical conductions disturbances in equines, as well as on prognosis determination of heart diseases, athletical performance, efficiency of training, and on electrolytic disturbance evaluation. However, electrocardiographic variables can be influenced by several factors such as age, gender, breed and phenotypic characteristics. Therefore the establishment of the characteristics of normality for different breed and phases of development is fundamental. Creole breed were firstly introduced to the American continent more than four centuries ago and it descends from horses of Iberian Peninsula. The breed is a result of natural selection that configured resistance and unique physical attributes.The present study aimed to analyze and compare the electrocardiographic parameters of Creole females in different ages, and verify the possibly influence of pregnancy on it. Digital electrocardiographic evaluation on apex-base lead was performed on 84 healthy creole mares (34 pregnant and 50 non-pregnant). The electrocardiograms were divided in groups concerning the age as G1 (until 4 years old), G2 (from 5 to 9 years old) and G3 (over 10 years old). No physiological or pathological heart arrhythmias and electrical conduction disturbances were seen in all examined mares. Sinus tachycardia , bifid P waves, rS configuration of QRS and biphasic T waves were the predominant patterns in all evaluated groups. Only the average of QRS duration of G1 females was significant superior (110,65±8,49) (p=0,0002) when compared with G2 (101,98±10,02) and G3 (100,92±10,72). The autonomic variables (ITV, average NN and SDNN) were lower in pregnant mares comparing to non-pregnant mares, suggesting a greater sympathetic autonomic system tonus and/or decrease of parasympathetic tonus on pregnant mares. In conclusion, the age affect only the QRS duration, and the pregnant condition was capable to decrease the time domain heart rate variability indexes with maybe influence the electrocardiographic evaluation of enrolled Creole mares.INDEX TERMS: Electrocardiogra...

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Avaliação eletrocardiográfica de equinos após exercício de polo (baixo handicap)

Cited by 8 publications

References 18 publications

Electrocardiographic parameters of the American Miniature Horse: influence of age and sex

Electrocardiographic parameters of the American Miniature Horse: influence of age and sex

Physical and electrocardiographic evaluation of horses used for wagon traction

Estudo eletrocardiográfico de éguas da raça Crioula

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