December 2010
4 posts
Valsalva maneuver →
bestofwikipedia:
The Valsalva maneuver is performed by moderately forceful attempted exhalation against a closed airway, usually done by closing one’s mouth and pinching one’s nose shut. Variations of the maneuver can be used either in medical examination as a test of cardiac function and autonomic nervous control of the heart, or to “clear” the ears and sinuses (that is, to equalize...
