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

Representative ECGs in both healthy and hospitalized cows. ECGs recorded for about 1min during the same period in the dark phase for healthy (A) and (B) hospitalizedcows.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig_001: Representative ECGs in both healthy and hospitalized cows. ECGs recorded for about 1min during the same period in the dark phase for healthy (A) and (B) hospitalizedcows.

Mentions: Representative ECGs in both CH and HP cows in the dark phase are shown in Fig. 1A and 1BFig. 1.


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)

Representative ECGs in both healthy and hospitalized cows. ECGs recorded for about 1min during the same period in the dark phase for healthy (A) and (B) hospitalizedcows.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig_001: Representative ECGs in both healthy and hospitalized cows. ECGs recorded for about 1min during the same period in the dark phase for healthy (A) and (B) hospitalizedcows.
Mentions: Representative ECGs in both CH and HP cows in the dark phase are shown in Fig. 1A and 1BFig. 1.

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