The Valsalva maneuver or Valsalva manoeuvre is performed by moderately forceful attempted exhalation against a closed airway, usually done by closing one's mouth, pinching one's nose shut while pressing out as if blowing up a balloon. 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 pressure between them) when ambient pressure changes, as in diving, hyperbaric oxygen therapy, or air travel.

Valsalva maneuver.
Valsalva Maneuver
Valsalva Maneuver
Evaluation of Impaired Cerebral Autoregulation by the Valsalva Maneuver
Middle cerebral artery blood velocity during a valsalva maneuver in the standing position.
Baroreceptor reflex sensitivity index derived from Phase 4 of te Valsalva maneuver.
Echocardiographic evaluation of the Valsalva Maneuver in healthy subjects and patients with and without heart failure.
Comparison of treatment of supraventricular tachycardia by Valsalva maneuver and carotid sinus massage.
Levator co-activation is a significant confounder of pelvic organ descent on Valsalva maneuver
Middle cerebral artery blood velocity during intense static exercise is dominated by a Valsalva maneuver.
The cough test is superior to the Valsalva maneuver in the delineation of right-to-left shunting through a patent foramen ovale duri...
Manipulation of ascending aortic pressure and flow wave reflections with the Valsalva maneuver: relationship to input impedance.
Prevalence of right-to-left atrial shunting in a healthy population: detection by Valsalva maneuver contrast echocardiography.