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Related Experiment Videos

Reflex control of circulation in the elderly.

G Mancia1, J Cléroux, A Daffonchio

  • 1Cattedra di Semeiotica Media, Università di Milano, CNR, Italy.

Cardiovascular Drugs and Therapy
|January 1, 1991
PubMed
Summary

Aging impairs baroreceptor reflex control of blood pressure and cardiopulmonary reflexes. These changes in cardiovascular control contribute to hemodynamic issues in older individuals.

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Area of Science:

  • Cardiovascular physiology
  • Gerontology
  • Neuroscience

Background:

  • Baroreceptor reflex is crucial for maintaining blood pressure.
  • Aging impacts heart rate regulation but effects on blood pressure control are unclear.
  • Cardiopulmonary reflexes influence vascular resistance and hormone secretion.

Purpose of the Study:

  • To investigate the effects of aging on baroreceptor control of blood pressure.
  • To examine how aging affects cardiopulmonary receptor influences on vascular resistance and renin secretion.

Main Methods:

  • Studies conducted on conscious rats and humans.
  • Assessment of dynamic and steady-state baroreceptor function.
  • Evaluation of cardiopulmonary reflex modulation of vascular resistance and renin secretion.

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Main Results:

  • Aging reduces the baroreceptor's ability to rapidly alter blood pressure.
  • Long-term carotid baroreceptor control of blood pressure is preserved in aging.
  • Aging impairs cardiopulmonary reflex control of vascular resistance and renin secretion.

Conclusions:

  • Aging alters baroreceptor and cardiopulmonary reflex cardiovascular control.
  • These age-related changes contribute to hemodynamic abnormalities in older adults.