Many people dismiss straining during bowel movements as a minor inconvenience, but this habit can lead to serious health complications. Regular diffic ...

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.

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.

Gentle negative pressure (suction ... Nevertheless, excessive bleeding, sepsis, hemothorax, and damage to other intrathoracic structures are rare complications 11. On occasion, air may be ...