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  2. Valsalva maneuver - Wikipedia

    en.wikipedia.org/wiki/Valsalva_maneuver

    The Valsalva maneuver may be used to arrest episodes of supraventricular tachycardia. [12] [13] Blood pressure (BP) rises at onset of straining-because the increased intrathoracic pressure (ITP) is added to the pressure in the aorta. It then falls because the ITP compresses the veins, decreasing the venous return and cardiac output.

  3. Intracranial pressure - Wikipedia

    en.wikipedia.org/wiki/Intracranial_pressure

    CSF pressure has been shown to be influenced by abrupt changes in intrathoracic pressure during coughing (which is induced by contraction of the diaphragm and abdominal wall muscles, the latter of which also increases intra-abdominal pressure), the valsalva maneuver, and communication with the vasculature (venous and arterial systems).

  4. Breath-holding spell - Wikipedia

    en.wikipedia.org/wiki/Breath-holding_spell

    Physiologically, there is often hypocapnea (low levels of carbon dioxide) and usually hypoxia (low levels of oxygen). There is increased intrathoracic pressure and decreased cardiac output following the Valsalva maneuver. This eventually leads to a significant decrease in circulation to the brain and ultimately, loss of consciousness.

  5. Traumatic asphyxia - Wikipedia

    en.wikipedia.org/wiki/Traumatic_asphyxia

    The sudden impact on the thorax causes an increase in intrathoracic pressure. [4] In order for traumatic asphyxia to occur, a Valsalva maneuver is required when the traumatic force is applied. [6] Exhalation against the closed glottis along with the traumatic event causes air that cannot escape from the thoracic cavity.

  6. Cerebral autoregulation - Wikipedia

    en.wikipedia.org/wiki/Cerebral_autoregulation

    This blood pressure variation can either be evoked or spontaneous. Evoked blood pressure changes can be the result of: releasing leg cuffs that were inflated above systolic pressure; breathing at a fixed rate; performing a Valsalva maneuver; performing squat-stand or sit-stand maneuvers; lower body negative pressure

  7. ‘Why we never got Ebola’ by Huffington Post

    testkitchen.huffingtonpost.com/ebola

    What one nurse learned about humanity amidst the Ebola epidemic

  8. Hamman's syndrome - Wikipedia

    en.wikipedia.org/wiki/Hamman's_syndrome

    The cause of Hamman's syndrome is most commonly unknown (idiopathic). Excessive duration and/or intensity of activities that mimic valsalva manoeuvres, i.e. that increase intrathoracic pressure, can cause barotrauma, and hence pregnancy (and constipation and other causes of excessive straining) can be a precipitating cause of Hamman's syndrome.

  9. Insufficient sleep and high blood pressure may raise risk of ...

    www.aol.com/insufficient-sleep-high-blood...

    A new study now shows that shorter sleep duration could interact with high blood pressure to increase the risk of poor cognitive function and brain aging. ... individuals with high blood pressure ...