Electrocardiogram assessment in non-anaesthetized clinically healthy agouti (Dasyprocta primnolopha, Wagler 1831)

Diniz, Anaemilia das Neves; Junior, José Reck; Guerra, Porfírio Candanedo; Barrêto-Júnior, Raimundo Alves; Almeida, Hatawa Melo de; Freire, Larisse Danielle Silva; Ambrósio, Carlos Eduardo; Alves, Flávio Ribeiro

doi:10.1590/s0100-736x2013001300002

Cited by 4 publications

(12 citation statements)

References 42 publications

(60 reference statements)

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“…Nevertheless, the P wave amplitude was similar to that found in non-anesthetized ferrets, Brazilian agouti and chemical restrained cheetahs (Schumacher et al 2003, Dudás-Györki et al 2011, Diniz et al 2013). This wave duration and amplitude represent the atrial conduction (Tilley & Goodwin 2002) and the length increase observed in these animals and other mammal species under chemical restraint, it may be due to ketamine administration.…”

Section: Discussionsupporting

confidence: 81%

“…The P wave duration, PR, and QT intervals in pacas under chemical restraint were similar to that reported for capybaras (Szabuniewicz et al 1978) and other wild mammals using a similar restraint protocol (Schumacher et al 2003, Estrada et al 2009, Oda et al 2009), but were slightly larger than in Brazilian agouti, rabbits, ferrets and dogs under physical restraint (Szabuniew et al 1971, Tilley & Goodwin 2002, Dudás Györki et al 2011, Diniz et al 2013). Nevertheless, the P wave amplitude was similar to that found in non-anesthetized ferrets, Brazilian agouti and chemical restrained cheetahs (Schumacher et al 2003, Dudás-Györki et al 2011, Diniz et al 2013).…”

Section: Discussionsupporting

confidence: 78%

“…Heart rate obtained in the studied pacas was similar to described in cats, dogs, maned wolves, capybaras and cheetahs (Szabuniew et al 1978, Tilley 1992, Martin 2002, Schumacher et al 2003, Estrada et al 2009) higher than in Leopards (Oda et al 2009) and lower than in brazilian agouti (Diniz et al 2013). Although the capybara and brazilian agouti are phylogenetically closest to the paca (Ávila et al 2010), the heart rate of these species has a moderate variation.…”

Section: Discussionsupporting

confidence: 77%

“…The ECG tracing characteristics of spotted pacas in DII lead was similar to described for brazilian agouti, capybara, dogs, cats, ferrets, leopards, maned wolves, cheetahs and capuchin monkey (Szabuniewicz et al 1978, Martin 2002, Tilley & Goodwin 2002, Schumacher et al 2003, Estrada et al 2009, Oda et al 2009, Dudás Györki et al 2011, Larsson et al 2012, Diniz et al 2013, this ECG configuration indicate that the force of ventricular depolarisation spreaded principally to caudal and left side in front plane, due to positive R wave in DI, DII, DII and aVF, negative in aVR and small and variable in aVL leads, similar to described in ferrets (Dudás Györki et al 2011). Due to the DII lead characteristics this is considered the most widely used derivation for the rhythm, frequency, configuration, amplitude, and duration, cardiac waves analysis (Hurst & Meyerbur 1968), for this reason this derivation was presented as standard.…”

Section: Discussionsupporting

confidence: 66%

“…Although the capybara and brazilian agouti are phylogenetically closest to the paca (Ávila et al 2010), the heart rate of these species has a moderate variation. The mean values reported were 130 bpm in capybaras under chemical restraint (Szabuniew et al 1978), 182 bpm in Brazilian agouti under physical restraint (Diniz et al 2013) and 150 bpm in this study of spotted pacas. These differences can be attributed to the animals' size (40kg, 2.3 kg and 9 kg, respectively), since the body mass is inversely proportional to heart rate (Schmidt-Nielsen 1999).…”

Section: Discussionmentioning

confidence: 44%

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Electrocardiographic exam in female spotted pacas (Cuniculus paca)

et al. 2016

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RESUMO.-[Exame eletrocardiográfico em pacas fême-as (Cuniculus paca).]Considerando a limitada informação sobre a fisiologia cardíaca em roedores neotropicais e a importância desta informação para estudos fisiopatológicos e de conservação desta espécie, objetivou-se com este estudo avaliar a atividade elétrica cardíaca de pacas saudáveis mantidas em cativeiro, sob restrição química, devido à natureza selvagem destes animais. Onze fêmeas adultas foram avaliadas clinicamente e por meio do hemograma e testes bioquímicos no intuito de descartar qualquer co-morbidade associada. Cada animal foi submetido a três períodos experimentais a cada 15 dias. Após a restrição química com Considering the limited physiological information available on neotropical rodents and the importance of this information for pathophysiological and conservation studies of these species, the aim of this study was to evaluate the cardiac electric physiology of healthy captivity spotted pacas (Cuniculus paca) under chemical restraint, due to wild nature of these animals. Eleven adult female pacas were evaluated by blood count and biochemical dosage to rule out any associate disease. Each animal was evaluated in three periods every 15 days. After chemical restraint with intramuscular midazolam 0.5mg/kg and ketamine 25mg/kg, animals were subjected to a computerized electrocardiogram, where bipolar (DI, DII and DIII) and augmented unipolar leads (aVR, aVL, aVF) were obtained. Descriptive statistics were calculated for each parameter and built the confidence interval (CI) at significance level of 95%. The electrocardiographic examination was performed without difficult. ECG tracing in DII represents a QRS complex with positive polarity, preceded by a P wave of the same polarity and proceeded by T wave of variable polarity. Heart rate mean was 150±17 bpm, and cardiac electrical axis 33.4±21.9°. All animals showed sinusal rhythm. The ECG recording technique associated with chemical restraint was well tolerated, allowing quick acquisition of reliable ECG tracings with high repeatability, which produced sufficient results to determine the heart rhythm and suggest measures of ECG complexes duration and amplitude.

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Section: Discussionsupporting

confidence: 81%