The following is a summary of “A Prospective Crossover Study Comparing Six Current Generation Supraglottic Airway Device's ...

The intrathoracic pressure affecting your lungs and heart changes from its norm. These changes can potentially affect how blood flows back to the heart, as well as trigger and move the heart.

Negative-pressure pulmonary edema (NPPE) occurs when a large, negative intrathoracic pressure is generated against an obstructed upper airway, causing fluid to shift into the lung interstitium.

This results in the right heart relying more heavily on the decreased intrathoracic pressures during inspiration to fill, exaggerating the pressure change, which is measurable. To measure the ...

Intrathoracic obstruction is most severe during ... is increased during inspiration because of the effect of atmospheric pressure to compress the trachea below the site of obstruction.

Since the ventricles in the setting of constrictive pericarditis are unable to expand, the variation in intracardiac pressure during the respiratory cycle exerts changes only between the right and ...