Effect of body position on electrocardiographic recordings in dogs

Stern, Joshua A.; Hinchcliff, K. W.; Constable, Peter D.

doi:10.1111/avj.12076

Cited by 9 publications

(15 citation statements)

References 29 publications

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“…However, this may be partly because of positioning as the study was done with the calves standing, and based on results from other species, more agreement in heart rate and quality scores could have been reached from placing the calves in a right lateral recumbent position. In dogs, standing recordings has been shown to induce artifact on recordings in the form of muscle tremors, sporadic muscle twitching, and gross muscle movement [8]. This same study has shown that a right lateral recumbent position improves the quality of ECG recordings in dogs by decreasing muscle tremor artifact, and shifting the mean electrical axis to the right relative to standing [8].…”

Section: Discussionmentioning

confidence: 83%

“…In dogs, standing recordings has been shown to induce artifact on recordings in the form of muscle tremors, sporadic muscle twitching, and gross muscle movement [8]. This same study has shown that a right lateral recumbent position improves the quality of ECG recordings in dogs by decreasing muscle tremor artifact, and shifting the mean electrical axis to the right relative to standing [8]. Future research for this device includes the use of the device on animals in a right lateral recumbent position, older animals, as well as anesthesia monitoring.…”

Section: Discussionmentioning

confidence: 99%

“…The findings were then reviewed to determine if the AliveCor device was comparable to the 6 lead ECG for rate and rhythm diagnosis. All leads were quality scored utilizing a previously reported ECG quality scoring system as depicted in Table 1 [8]. An example of a standard ECG compared to an AliveCor ECG is displayed in Figure 2.…”

Section: Data Evaluationmentioning

confidence: 99%

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Use of AliveCor Heart Monitor for Heart Rate and Rhythm Evaluation in Dairy Water Buffalo Calves (Bubalis Bubalis)

Smith¹

2016

JDVAR

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Smartphone-based ECG recording devices are a promising new diagnostic in veterinary medicine. However, these devices have not yet been demonstrated to work in water buffalo. A commercial, non-invasive, smartphone-based ECG (AliveCor Vet TM) monitoring device was field tested on water buffalo calves. Six neonatal water buffalo calves had an ECG simultaneously recorded with a standard medical ECG recorder and the AliveCor Vet device. A correlation of 0.75053 was observed between average heart rates obtained between AliveCor recordings when compared to those from the 6 lead ECG. 100% Rhythm agreement was met for all 12 recordings. The recordings of 4/6 calves most closely resembled lead aVR, recordings of 2/6 calves more closely resembled lead II. No significant difference was observed between standard and AliveCor quality scores (P=0.3632). We conclude that the AliveCor device allows for accurate rate diagnosis, and accurate diagnosis of a normal sinus rhythm in neonatal diary water buffalo calves in a field setting.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

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Use of AliveCor Heart Monitor for Heart Rate and Rhythm Evaluation in Dairy Water Buffalo Calves (Bubalis Bubalis)

Smith¹

2016

JDVAR

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“…A FC basal se encontrava dentro dos valores normais para a espécie, em decúbito lateral e acordados [27], porém diminuiu ao longo do tempo avaliado, em ambos os grupos, levando à bradicardia. O sinergismo entre opioides e propofol pode ter auxiliado para a diminuição da FC no presente estudo, visto que os opioides induzem bradicardia, resultado da estimulação vagal, inibição simpática central e possível ação nos reTabela 3.…”

Section: Discussionunclassified

“…Na primeira avaliação, 24 h antes do início da sedação prolongada, realizou-se avaliação eletrocardiográfica e as medidas dos potenciais elétricos, com auxílio do software eletrocardiógrafo digital computadorizado (TEB ® ECG PC) 2 , utilizando a derivação II, com velocidade de 50 mm/s e o aparelho calibrado para 1 mV= 1 cm (2N). O animal foi mantido em decúbito lateral direito, o qual melhora a qualidade das gravações, diminuindo artefatos relacionados a tremores musculares [27], os eletrodos foram conectados por meio de garras metálicas à pele, na região das articulações úmero-rádio-ulnar e fêmoro-tíbio-patelar. Avaliou-se a frequência e o ritmo cardíacos, a duração (s) e amplitude (mV) da onda P, complexo QRS, e onda T, a duração (s) dos intervalos PR e QT, e nivelamento do segmento ST (mV).…”

Section: Delineamento Experimentalunclassified

Seric Concentration of Troponin I and Electrocardiographic Tracing in Dogs Submitted to Long-Term Sedation during 24 Hours

Regalin

Gehrcke

Comassetto

et al. 2017

Acta Scientiae. Vet.

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Background: General anesthetics and sedatives are commonly used for long-term sedation in veterinary medicine; however, they can lead to cardiac suppression. Cardiac troponin I is a biomarker used to detect myocardial pathology, monitor treatment, and assess outcomes in veterinary patients. The aim of this study was to evaluate the serum concentration of troponin I (cTnI), the electrocardiographic (ECG) tracing, and the ventricular stroke work index in dogs undergoing two long-term sedation protocols over 24 h. Materials, Methods & Results: Twelve healthy mongrel dogs with an average weight of 13.2 ± 2.3 Kg were admitted for this study. Twenty-four h before the experiment began (M-24), venous blood samples were collected for chemiluminescent cTnI evaluation and ECG data were obtained, specifically heart rate (HR); P, PR, QRS and T wave duration; P, R, T wave amplitude; and ST segment depression. On the day of the experiment, the animals were anaesthetized with propofol and isoflurane, and instrumented. After instrumentation, right and left ventricular stroke work index (RVSWI and LVSWI respectively) and intrapulmonary shunt (Qs/Qt) were performed as baseline parameters. The isoflurane was then discontinued and the animals randomly allocated to two groups (n = 6 each): Midazolam and fentanyl group (GMF), in which the animals received a bolus and continuous rate infusion (CRI) of midazolam (0.5 mg/kg and 0.5 mg/kg/h) and fentanyl (5 µg/kg and 10 µg/kg/h) or ketamine and morphine group (GKM), in which the animals received a bolus and CRI of ketamine (1 mg/kg and 0.6 mg/kg/h) and morphine (0.5 mg/kg and 0.26 mg/kg/h). Both groups also received propofol as a bolus and CRI (3 mg/kg and 0.3 mg/ kg/min) over 24 h. The ECG and cTnI parameters were evaluated at 6, 12, and 24 h during CRI (M6, M12, and M24) and 12 and 24 h after the end of infusion (T12 and T24). The hemodynamic parameters RVSWI, LVSWI, and Qs/Qt were evaluated every 2 h until the end of CRI. There was a non-significant increase in cTnI from M6 in both groups; however, a significant increase was only observed in GMF between M-24 and T12. During sedation, HR decreased an average of 46% in GKM and 51% in GMF compared to M-24. The QT interval (milliseconds) increased in both groups after CRI started, returning to baseline values at T24. There were no differences in P, QRS, and T wave amplitude or ST segment depression in either group. Discussion: The serum concentration of cTnI increased in GMF at T12, more probably due to hemodynamic changes during sedation rather than myocardial lesions, since the increase was relatively mild. A greater hemodynamic change was observed in GMF, with a greater increase in RVSWI compared to baseline than GKM, which may reflect an increase in cardiac effort and possibly cTnI release; however, in both groups, the cTnI values remained within the acceptable values for the species. Bradycardia was reported during long-term sedation, which may be due to the synergism between opioids as a result of vagal stimulation, central s...

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Effects of recording device, body position, electrode placement, and sedation on electrocardiogram intervals in dogs

Hertzer

Gordon²,

Wesselowski³

2022

The Veterinary Journal

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Effect of body position on electrocardiographic recordings in dogs

Abstract: Right lateral recumbency improves the quality of ECG recording in dogs by decreasing muscle tremor artefact, alters the amplitude of P, R and S waves in specific leads and results in a rightward shift in the mean electrical axis, relative to standing.

Cited by 9 publications

References 29 publications

Use of AliveCor Heart Monitor for Heart Rate and Rhythm Evaluation in Dairy Water Buffalo Calves (Bubalis Bubalis)

Use of AliveCor Heart Monitor for Heart Rate and Rhythm Evaluation in Dairy Water Buffalo Calves (Bubalis Bubalis)

Seric Concentration of Troponin I and Electrocardiographic Tracing in Dogs Submitted to Long-Term Sedation during 24 Hours

Effects of recording device, body position, electrode placement, and sedation on electrocardiogram intervals in dogs

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