| Valsalva m. |
1. forcible exhalation effort against a closed glottis; the resultant increase in intrathoracic pressure interferes with venous return to the heart. Called also Valsalva's experiment. 2. forcible exhalation effort against occluded nostrils and a closed mouth causes increased pressure in the eustachian tube and middle ear, so that the tympanic membrane moves outward; formerly used as a test of eustachian tube patency. Called also Valsalva's method or test.
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