1 It is this inflammation of the gums that accounts for most of the symptoms of gingivitis. 2  Bacteria can cause inflammation of the gums. 3  Although bacteria are normally found in our bodies and provide protective effects most of the time, bacteria can be harmful. 4  The mouth is an ideal place for bacteria to live.
The effect of the Valsalva Maneuver is a drastic increase in the pressure within the thoracic cavity. SIDENOTE. ==========================================. The thoracic cavity is the airtight section inside the chest which houses the lungs and heart. In a Valsalva Maneuver, attempting to exhale with the mouth and nose closed increases the pressure in the thoracic cavity because the air cannot escape. ==========================================. The place where the Valsalva Maneuver is carried out the most is the sitting toilet. It is difficult to evacuate properly on a sitting toilet because the colon is not supported and pressurised. There is also a kink at the rectum and anus which obstructs the flow of waste.
An example of dizziness induced by inner ear pressure changes might be dizziness associated with the Valsalva maneuver. This is a straining maneuver that increases pressure in the spinal fluid and inner ear perilymph space. Superior canal dehiscence is the main cause of Valsalva induced dizziness. An example of dizziness induced by middle ear pressure fluctuation is alternobaric vertigo -- such as occurs in people who can clear one ear, but not the other.(Tjernstrom 1974; Tjernstrom 1974; Tjernstrom 1974; Klingmann, Knauth et al.