Variabilidade da freqüência cardíaca em cães anestesiados com infusão contínua de propofol e sufentanil

Carareto, Roberta; Sousa, Marlos Gonçalves; Zacheu, J. C.; Aguiar, Antonio J. A.; Camacho, Aparecido Antônio

doi:10.1590/s0102-09352007000200009

Cited by 10 publications

(6 citation statements)

References 11 publications

(2 reference statements)

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“…1), which natural logarithm (neperian) was representing the vasovagal tonus index (VVTI) (Carareto et al, 2007), the root mean square of differences from the mean interval, overall HRV (RMSM) and square root of the mean squared differences of successive RR intervals (RMSSD) (Siimes et al, 1990). The choice of these indexes was made because they are sensitive indicators and are conventionally accepted to characterize the HRV (Malik, 1996).…”

Section: Methodsmentioning

confidence: 99%

Early and late analysis of postpartum stress in newborn foals

Cruz

Alfonso

Lourenço

et al. 2017

Arq. Bras. Med. Vet. Zootec.

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The aim of this study was to evaluate newborn foals stress in the first 48 hours of life. Heart rate (HR), heart rate variability (HRV) and serum cortisol concentrations, blood glucose, and lactate were determined in foals (n = 20, Paint Horse). Cortisol concentrations decreased significantly between four and 48 hours, with the highest concentration at 4 hours after birth. Positive correlations between cortisol and lactate occurred between 12 and 16 hours. And there was a negative correlation between cortisol and lactate 4 hours after birth. Among the values obtained for HR, there was significantly difference between the the value obtained at twelve hours of life moment and all the other moments measured, the highest values were at birth, 24 and 48 hours of life. Among HRV indexes, there were no statistical differences between the variables analysed. The cortisol, HR and HRV alterations were consistent to neonatal stress, but might be related to extrauterine environment adaptation associated to sympathoadrenal response, since those foals were healthy.Keywords: equine neonate, cortisol, heart rate, heart rate variability nascimento, quatro, oito, 16, 20, 24, 36 RESUMO

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Section: Methodsmentioning

confidence: 99%

Early and late analysis of postpartum stress in newborn foals

Cruz

Alfonso

Lourenço

et al. 2017

Arq. Bras. Med. Vet. Zootec.

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“…It has already been noticed that the 10% increase in body fat is able to lead to a decrease in parasympathetic action and an increase in heart rate (Rasmussen et al, 2012). However, at the same time as studies indicate the predominance of sympathetic tone in obesity, others have evidenced the decrease of this tone in humans (Talib et al, 2005;Carareto et al, 2007).…”

Section: Introductionmentioning

confidence: 98%

Influence of weight loss on heart rate variability in dogs

Filho

Hainfellner²,

Lemos

et al. 2019

Braz. J. Vet. Med.

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The autonomic nervous system (ANS) plays a role in the regulation of the cardiovascular system through sympathetic and parasympathetic modulations, which act in an associated way in the regulation of homeostasis. This regulation exercised by the ANS is determined by numerous factors including breathing, stress, temperature, blood pressure and physical activity. Cardiac nerve regulation is influenced by obesity, but the autonomic response present in this disorder has not yet been elucidated. It is known that a 10% increase in body fat is able to lead to a decrease in parasympathetic action and an increase in heart rate. Heart Rate Variability (HRV) allows the evaluation of autonomic heart modulation through the ventricular depolarization intervals to the electrocardiogram (ECG), and provides information on the relationship and contribution of the ANS to the neural influence of heart rate control. The objective of the present study was to evaluate the HRV by means of an electrocardiographic examination in obese dogs with Body Condition Score (BCS) 8/9 and 9/9, comparing with HRV of the same animals, after therapy with therapeutic ration in the period of 6 months, as well as the comparison with control group with lean animals. With the results obtained in the present study, it can be inferred that probably the imbalance in the autonomic activity due to obesity in dogs is not the same as in humans and that a greater understanding of this regulation in these animals is necessary, especially considering their vagotonia. The diet program based on low-calorie ration reached approximately 10% and 20% of weight reduction after two and six months, respectively. Obesity raises HRV by increasing parasympathetic activity in the autonomic regulation of the heart in dogs.

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“…Sympathetic discharge increases during stressful events and leads to elevation of the respiratory rate (RR), heart rate (HR) and systolic blood pressure (SBP), as well as a reduction of heart rate variability (HRV) and vasovagal tonus index (VVTI). 1–5…”

Section: Introductionmentioning

confidence: 99%

Evaluation of environment and a feline facial pheromone analogue on physiologic and behavioral measures in cats

Conti

Champion

Guberman

et al. 2016

Journal of Feline Medicine and Surgery

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Objectives This study assessed behavioral and physiologic stress parameters in cats placed in two environments: home and the veterinary hospital. With a widely used scale, several parameters were assessed, including respiratory rate (RR), heart rate (HR), systolic blood pressure (SBP), vagosympathetic responses using calculated intervals (heart rate variability [HRV]10, HRV20 and vasovagal tonus index [VVTI]) and 'stress attitude', such as struggling, vocalization and agitation during handling. In addition, we evaluated whether a feline facial pheromone analogue (FFPA) had an effect on any of these measures in either environment. Methods Using a placebo and a pheromone substance, we evaluated 30 adult and healthy cats at home and in veterinary hospitals. Statistical analyses were performed using the Shapiro-Wilk, Kruskal-Wallis, and Dunn or ANOVA and Tukey tests, as well as Spearman's correlation ( P <0.05). Results We found that exposure to FFPA did not reduce the effects of stress. Some parameters presented differences with regard to environment: the RR was 45 and 70 breaths/min and stress attitude score was 1.3 and 0.0 for cats evaluated at home and at the hospital, respectively. The HR and two vagosympathetic responses were also different between the two environments, with a HR of 160 and 187 beats/min, HRV10 of 14.24 and 14.00, and HRV20 of 14.89 and 14.65 in cats at home and the hospital, respectively. There was no variation in SBP and VVTI parameters between the environments. Conclusions and relevance Exposure to FFPA does not reduce the physiologic and behavioral changes measured in this study. Furthermore, environmental change, physical restraint and manipulation during the physical examination alter RR, HR, HRV and behavior but not SBP and VVTI. This study is relevant because physiologic and behavioral stress can affect the quality and interpretation of physical examination results. This study presents detailed data that show the effects of environment and manipulation on such parameters. Furthermore, this study shows a lack of effect of FFPA on any of these parameters.

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Variabilidade da freqüência cardíaca em cães anestesiados com infusão contínua de propofol e sufentanil

Cited by 10 publications

References 11 publications

Early and late analysis of postpartum stress in newborn foals

Early and late analysis of postpartum stress in newborn foals

Influence of weight loss on heart rate variability in dogs

Evaluation of environment and a feline facial pheromone analogue on physiologic and behavioral measures in cats

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