Effect of posture on heart rate and cardiac axis of mice.
Indian J Physiol Pharmacol
;
1987 Jul-Sep; 31(3): 211-7
Artigo
em Inglês
| IMSEAR
| ID: sea-106525
ABSTRACT
Effect of change in body posture on cardiac electrical axis has not been well documented. Hence the present work was undertaken to study the effect of passive head-up and head-down postures on ventricular QRS axis and heart rate of anesthetised mice. During head-up posture, there was a statistically significant (P less than 0.02) increase in heart rate whereas during head-down posture, the heart rate decreased insignificantly. These changes in heart rate can be explained on the basis of synus and aortic nerve mediated baroreceptor reflexes. Ventricular QRS axis showed a significant increase (P less than 0.02) during head-up posture and an insignificant decrease during head-down posture. A change in the posture is likely to produce a change in anatomical orientation of heart within the thorax resulting in alteration of electrical axis of the heart.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Postura
/
Ratos
/
Eletrocardiografia
/
Frequência Cardíaca
/
Anestesia
/
Animais
/
Camundongos
Idioma:
Inglês
Revista:
Indian J Physiol Pharmacol
Ano de publicação:
1987
Tipo de documento:
Artigo
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