Limits...
Influence of sickness condition on diurnal rhythms of heart rate and heart rate variability in cows.

Yoshida M, Onda K, Wada Y, Kuwahara M - J. Vet. Med. Sci. (2014)

Bottom Line: For this purpose, we recorded electrocardiograms for 24 hr using a Holter-type electrocardiograph and applied power spectral analysis of heart rate variability in both five clinically healthy and four hospitalized cows.The significant findings of the current investigation were that the diurnal variations of autonomic nervous function are abolished in cows that are sick.Therefore, the heart rate variability may be a useful indicator of sickness condition in cows.

View Article: PubMed Central - PubMed

Affiliation: Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, University of Tokyo 113-8657; Laboratory of Internal Medicine III, Azabu University School of Veterinary Medicine, Sagamihara, Kanagawa 252-5201, Japan.

ABSTRACT
Parameters of heart rate variability would explain changes in heart rate during the disease status in cows and to evaluate whether such changes might provide a more sensitive and quantitative indicator of these conditions than crude indices. For this purpose, we recorded electrocardiograms for 24 hr using a Holter-type electrocardiograph and applied power spectral analysis of heart rate variability in both five clinically healthy and four hospitalized cows. The significant findings of the current investigation were that the diurnal variations of autonomic nervous function are abolished in cows that are sick. This abnormal rhythm was induced by predominant parasympathetic inhibition in these cows. Therefore, the heart rate variability may be a useful indicator of sickness condition in cows.

Show MeSH

Related in: MedlinePlus

Light- and dark-phase heart rate variability. Twelve hourly values for each cow in eachperiod were taken and averaged to get the average per cow and then are summarized foreach group to get the mean ± SD for each of the periods. See Fig. 2 for key. *P<0.05,**P<0.01.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4383789&req=5

fig_003: Light- and dark-phase heart rate variability. Twelve hourly values for each cow in eachperiod were taken and averaged to get the average per cow and then are summarized foreach group to get the mean ± SD for each of the periods. See Fig. 2 for key. *P<0.05,**P<0.01.

Mentions: Changes in 24-hr plots of heart rate and heart rate variability indices. CH=clinicallyHealthy group (n=5), HP=hospitalized group (n=4) HR=heart rate, HF=high frequency power,LF=low frequency power, LF/HF=LF-to-HF ratio. The values are expressed as the mean ±SD.


Influence of sickness condition on diurnal rhythms of heart rate and heart rate variability in cows.

Yoshida M, Onda K, Wada Y, Kuwahara M - J. Vet. Med. Sci. (2014)

Light- and dark-phase heart rate variability. Twelve hourly values for each cow in eachperiod were taken and averaged to get the average per cow and then are summarized foreach group to get the mean ± SD for each of the periods. See Fig. 2 for key. *P<0.05,**P<0.01.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4383789&req=5

fig_003: Light- and dark-phase heart rate variability. Twelve hourly values for each cow in eachperiod were taken and averaged to get the average per cow and then are summarized foreach group to get the mean ± SD for each of the periods. See Fig. 2 for key. *P<0.05,**P<0.01.
Mentions: Changes in 24-hr plots of heart rate and heart rate variability indices. CH=clinicallyHealthy group (n=5), HP=hospitalized group (n=4) HR=heart rate, HF=high frequency power,LF=low frequency power, LF/HF=LF-to-HF ratio. The values are expressed as the mean ±SD.

Bottom Line: For this purpose, we recorded electrocardiograms for 24 hr using a Holter-type electrocardiograph and applied power spectral analysis of heart rate variability in both five clinically healthy and four hospitalized cows.The significant findings of the current investigation were that the diurnal variations of autonomic nervous function are abolished in cows that are sick.Therefore, the heart rate variability may be a useful indicator of sickness condition in cows.

View Article: PubMed Central - PubMed

Affiliation: Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, University of Tokyo 113-8657; Laboratory of Internal Medicine III, Azabu University School of Veterinary Medicine, Sagamihara, Kanagawa 252-5201, Japan.

ABSTRACT
Parameters of heart rate variability would explain changes in heart rate during the disease status in cows and to evaluate whether such changes might provide a more sensitive and quantitative indicator of these conditions than crude indices. For this purpose, we recorded electrocardiograms for 24 hr using a Holter-type electrocardiograph and applied power spectral analysis of heart rate variability in both five clinically healthy and four hospitalized cows. The significant findings of the current investigation were that the diurnal variations of autonomic nervous function are abolished in cows that are sick. This abnormal rhythm was induced by predominant parasympathetic inhibition in these cows. Therefore, the heart rate variability may be a useful indicator of sickness condition in cows.

Show MeSH
Related in: MedlinePlus