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Message Subject Barometric Pressure related Allergies -Remedies?
Poster Handle Rev Woo-Woo
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When you sneeze, the intrathoracic pressure in your body momentarily increases. This will decrease the blood flow back to the heart. The heart compensates for this by changing its regular heart beat momentarily to adjust. However, the electrical activity of the heart does not stop during the sneeze.

[link to uamshealth.com]

In physiology, intrapleural pressure (also called intrathoracic pressure) refers to the pressure within the pleural cavity. Normally, the pressure within the pleural cavity is slightly less than the atmospheric pressure, in what is known as negative pressure.[1] When the pleural cavity is damaged/ruptured and the intrapleural pressure becomes equal to or exceeds the atmospheric pressure, pneumothorax may ensue.

Intrapleural pressure depends on the ventilation phase, atmospheric pressure, and the volume of the intrapleural cavity.[2]

At rest we have a negative intrapleural pressure. This gives us a transpulmonary pressure expanding the lungs. Intrapleural pressure is sub-atmospheric. This is due to the recoil of the chest and lungs away from each other.

[link to en.wikipedia.org (secure)]
 
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