Valsalvamanövern
Valsalvamanövern, known in English as the Valsalva maneuver, is a breathing technique that involves exhaling against a closed airway. It is commonly performed by closing the mouth and pinching the nose while attempting to push air out, thereby increasing intrathoracic and intraabdominal pressure. The maneuver is used in various medical and athletic contexts to influence heart rate, blood pressure, and spinal alignment.
Physiologically, the Valsalva maneuver temporarily reduces venous return to the heart, which lowers cardiac output and
The maneuver is generally safe when performed correctly, but excessive or prolonged pressure can lead to complications