Valsalva attempt, Valsalva pressing power attempt or also Valsalva method
of the Valsalva pressing power attempt is accomplished for the examination of the pressoreceptor reflex. The rehearsing and tries to breathe out strongly, while it zuhält itself the nose and locks the mouth. It harnesses the breathing musculature and abdominal muscles. The pressure in the thorax area increases thereby and causes a succumbing of the venous current reversal. The impact volume that of the right ventricle (ventricle lat.= chamber) becomes smaller. With the increased pressure in the entire thorax however the Lungenarterien more blood gives to the left ventricle, whereby so long a increased impact volume is delivered there, until the “supply” is used up in the Lungenarterien. If one does not dissolve the situation, then a collapse develops.
A positive effect of the Valsava method results in the case of pressure-expenditure-calibrates. The air pressure increases through locks the respiratory system and strain of the respiratory muscles (by tried breathing out) in the airways. Over the Eustachi tube it comes to the pressure balance between tympanic cavity and the nasopharyngeal cavity. With intact drum skin this curves outward, which can be observed by means of a Spekulums. The Valsalva attempt can be helpfully with negative pressure features in the tympanic cavity, e.g. during flights, elevator or aerial ropeway travels, or also with Otitis beginning media. Divers use it regularly, in order to adapt the tympanic cavity pressure to the water pressure in larger depths, in order to avoid thereby a Barotrauma.