Abstract
Retrograde Air Flow through the Lacrimal Drainage System with Valsalva Maneuver
Highlights
Under normal physiologic conditions, the lacrimal excretory system has a series of valves that prevent retrograde flow of fluid and air
While performing the Valsalva maneuver, increased intranasal pressure is not transmitted to the nasolacrimal system; trauma, lacrimal surgery, and positive airway pressure can disrupt the normal valve system and allow air to enter the lacrimal system
The following information was collected and evaluated after obtaining informed consent from the patients in order to comply to HIPAA
Summary
Background: Under normal physiologic conditions, the lacrimal excretory system has a series of valves that prevent retrograde flow of fluid and air. While performing the Valsalva maneuver, increased intranasal pressure is not transmitted to the nasolacrimal system; trauma, lacrimal surgery, and positive airway pressure can disrupt the normal valve system and allow air to enter the lacrimal system. Methods: A 35-year-old patient presented with complaint of tear duct expansion.
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