Valsalva maneuver
noun
Val·sal·va maneuver
val-ˈsal-və-
: a forceful attempt at expiration when the airway is closed at some point
especially
: a conscious attempt made while holding the nostrils closed and keeping the mouth shut (as for the purpose of adjusting middle ear pressure)
called also Valsalva
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Merriam-Webster unabridged
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