Electrocardiographic study in the American Quarter Horse breed

Mantovani, Matheus Matioli; Tsuruta, Suzana Akemi; Muzzi, Ruthnéa Aparecida Lázaro; Machado, Théa Mírian Medeiros; Pádua, Mariana Ferreira Silva; Coimbra, Camila Lima; Muzzi, Leonardo Augusto Lopes; Jacomini, José Octávio

doi:10.1590/s0102-09352013000500017

Cited by 5 publications

(5 citation statements)

References 7 publications

(13 reference statements)

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“…These results are not consistent with previous observations in Quarter Horses in which animals older than 10 years had higher QRS durations than younger animals (Mantovani et al 2013).…”

Section: Discussioncontrasting

confidence: 99%

“…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%

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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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“…These results are not consistent with previous observations in Quarter Horses in which animals older than 10 years had higher QRS durations than younger animals (Mantovani et al 2013).…”

Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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“…The mean and standard error of mean values of heart rate for the racing and non-racing horses were 80.3 ± 8.4 and 63.1 ± 9.2 beats/minute respectively. The values recorded of P amplitude, P-R interval, R amplitude and Q-T duration in non-racing horses were lower than that recorded by Mantovani et al (2013) and this could be attributed to the difference in the breed of horses used and could also be due to the difference in the management system. It could also be related to the difference in environmental factors such as climate and topography.…”

Section: Discussioncontrasting

confidence: 60%

Comparison of electrocardiographic parameters of racing and non-racing horses in Sokoto Nigeria

Saidu¹,

Ishaq²,

Ibrahim³

et al. 2020

Sokoto J. Vet. Sc.

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The study was conducted due to the economic importance of horses and shortage of information on electrocardiographic parameters of horses in Sokoto, Nigeria. This study established the normal electrocardiographic parameters of racing and non-racing horses in Sokoto and statistically compared the values. The study used forty horses comprising of 20 racing and 20 non-racing horses with mean age of 8 ± 0.5 years and average weight of 200 ± 2.0 kg. ECG was recorded using the base apex system with the animals in standing position using single lead channel ECG recorder (EDAN VE-100 manufactured by Edan instruments China). The paper speed was set at 25mm/s while the sensitivity of the machine was adjusted to 10 mm/mV. The durations and amplitudes of P, R and T, the durations of Q and S and the durations of PR, QRS and QT intervals were all determined. These parameters were determined for the three standard limb leads (I, II and III) as well as the augmented limb leads (aVR, aVL and aVF). Descriptive statistics using SPSS version 16 was used to calculate the means and standard error of mean at 95 % confidence interval. One-way ANOVA was used to compare between the values of the racing and non-racing horses. The highest values of P amplitude, R amplitude, Q amplitude, QRS complex and P-R interval were recorded in racing horses, while highest T wave amplitude was recorded in non-racing horses. Highest duration of P wave, T wave and QRS was recorded in racing horses while highest duration of Q wave was recorded in non-racing horses. Significant difference was found in the T amplitude in racing horses in lead aVF. The mean heart rate for the racing and non-racing horses was 80.3 ± 8.4 and 63.1 ± 9.2 beats/minute respectively. Higher values recorded in racing horses indicates that exercise has influence on electrical activities in horses. Keywords: Electrocardiograph, Non-racing horses, Parameters, Racing horses, Sokoto

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“…In horses, Lázaro et al (2015) also identified differences in the values of electrocardiographic variables in a comparative study of conventional and computerized electrocardiography in horses of the quarter mile and mangalarga gait races. Also promoting the differences in ECG values in horses of different races, Mantovani et al (2013) described that cardiovascular function can vary according to the racial and functional characteristics of horses and previously, Morgan (2012) highlighted the main factors that affect the electrocardiographic tracing in the species, such as body size, chest conformation and cardiac positioning in the cavity thoracic, justifying the variations in the amplitudes of durations observed between the studied breeds. Facts seen in small ruminants, with differentiated electrocardiographic values in different races, ages and sizes, as described by Chiacchio et al (2018) and Samimi et al (2017) in sheep, as well as Pradhan et al (2017) in goats.…”

Section: Discussionmentioning

confidence: 81%

Computerized electrocardiography in adult Sulffolk sheep: a comparative study

Franco

Ribeiro

Santos

et al. 2020

AVB

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Article historyComputerized electrocardiography is a method widely used in veterinary medicine in several species and currently, with the availability of several devices in the market. In sheep, studies have shown variations in electrocardiographic values according to race, age, and methods of capture, but the values obtained in different computerized devices have not been compared. Thus, the present study sought to determine and compare the values of electrocardiographic variables between two computerized devices in healthy sheep. Fifty sheep (n = 50), Suffolk breed, female, launched, adult, nonpregnant, with average age and weight of two years and 50kg, respectively, were studied properly selected and clinically fit. The electrocardiographic tracings were obtained in two computerized electrocardiography devices (Apparatus A and B) individually and subsequently, with subsequent recording and interpretation of the tracings. The results showed a predominance of sinus rhythm in 78% (n = 39) and 22% (n = 11) with sinus arrhythmia in both devices. Significant differences among the devices (p <0.05) were identified in the duration variables (ms), such as P wave, P-R interval and segment, QRS complex, Q-T interval, S-T segment and T wave; and in the P-wave and R-wave amplitudes (mV). However, the values obtained were within the normal ranges recommended for the species, regardless of the capture method used. Thus, it is possible to conclude the presence of different values among the computerized electrocardiographs, suggesting variations in the tracking uptake sensitivity among the devices in released Suffolk sheep.

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Electrocardiographic study in the American Quarter Horse breed

Cited by 5 publications

References 7 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

Comparison of electrocardiographic parameters of racing and non-racing horses in Sokoto Nigeria

Computerized electrocardiography in adult Sulffolk sheep: a comparative study

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