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  2. Swimming-induced pulmonary edema - Wikipedia

    en.wikipedia.org/wiki/Swimming-induced_pulmonary...

    A diver switching their demand valves, or using a buddy’s air supply, or repeatedly purging a rebreather may indicate the onset of SIPE, particularly if there is an adequate supply pressure, and may signal that they are out of gas, or reject a working alternative gas supply [3] A diver may have difficulty breathing at the surface. [10]

  3. Catarrh - Wikipedia

    en.wikipedia.org/wiki/Catarrh

    Catarrh (/ k ə ˈ t ɑːr / kə-TAR) is an inflammation of mucous membranes in one of the airways or cavities of the body, [1] [2] usually with reference to the throat and paranasal sinuses. It can result in a thick exudate of mucus and white blood cells caused by the swelling of the mucous membranes in the head in response to an infection.

  4. Pressure control - Wikipedia

    en.wikipedia.org/wiki/Pressure_control

    Pressure control (PC) is a mode of mechanical ventilation alone and a variable within other modes of mechanical ventilation. Pressure control is used to regulate pressures applied during mechanical ventilation. Air delivered into the patients lungs (breaths) are currently regulated by Volume Control or Pressure Control. In pressure controlled ...

  5. Positive end-expiratory pressure - Wikipedia

    en.wikipedia.org/wiki/Positive_end-expiratory...

    Positive end-expiratory pressure (PEEP) is the pressure in the lungs (alveolar pressure) above atmospheric pressure (the pressure outside of the body) that exists at the end of expiration. [1] The two types of PEEP are extrinsic PEEP (PEEP applied by a ventilator) and intrinsic PEEP (PEEP caused by an incomplete exhalation).

  6. Automatic balancing valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_balancing_valve

    Pressure independent control valves are used to limit the flow to the fan coil terminal and air handling unit. This flow is not affected by changes in inlet pressure. A diaphragm within the valve keeps the outlet pressure constant, and this delivers a constant flow to the terminal.

  7. Air-operated valve - Wikipedia

    en.wikipedia.org/wiki/Air-operated_valve

    An air-operated valve, also known as a pneumatic valve, is a type of power-operated pipe valve that uses air pressure to perform a function similar to a solenoid. As air pressure is increased, the compressed air starts to push against the piston or diaphragm walls which causes the valve to actuate. Whether the valve opens or closes depends on ...

  8. Continuous positive airway pressure - Wikipedia

    en.wikipedia.org/wiki/Continuous_positive_airway...

    However, while PEEP refers to devices that impose positive pressure only at the end of the exhalation, CPAP devices apply continuous positive airway pressure throughout the breathing cycle. Thus, the ventilator does not cycle during CPAP, no additional pressure greater than the level of CPAP is provided, and patients must initiate all of their ...

  9. Cricoid pressure - Wikipedia

    en.wikipedia.org/wiki/Cricoid_pressure

    Cricoid pressure, also known as the Sellick manoeuvre or Sellick maneuver, is a technique used in endotracheal intubation to try to reduce the risk of regurgitation. The technique involves the application of pressure to the cricoid cartilage at the neck, thus occluding the esophagus which passes directly behind it.