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Influence of the Respiratory Movements on the Systemic Blood Pressure 

Influence of the Respiratory Movements on the Systemic Blood Pressure
Chapter:
Influence of the Respiratory Movements on the Systemic Blood Pressure
Author(s):

Marcus E. Raichle

DOI:
10.1093/med/9780199358984.003.0011
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date: 07 April 2020

This chapter discusses the influence of respiratory movements on the systemic blood pressure. After considering changes in the pulmonary circulation, the author considers changes in the systemic circulation throughout the body that may affect the interpretation of the changes in the circulation in the brain. This is an extremely complicated question; the author discusses it in relation to evidence in humans. Pulse tracings are taken from the external carotid. Issues such as the balance between blood in arteries from the aortic arch and veins going to the superior vena cava are discussed. The author carries out studies of blood flow on himself in the fasting state and after a meal. A copious meal, for example, causes much greater respiratory oscillations of the pulse.

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