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  2. Intrapleural pressure - Wikipedia

    en.wikipedia.org/wiki/Intrapleural_pressure

    At rest, there is a negative intrapleural pressure. This provides a transpulmonary pressure, causing the lungs to expand. If humans didn't maintain a slightly negative pressure even when exhaling, their lungs would collapse on themselves because all the air would rush towards the area of lower pressure. Intra-pleural pressure is sub-atmospheric.

  3. Elastic recoil - Wikipedia

    en.wikipedia.org/wiki/Elastic_recoil

    Relaxing the diaphragm during expiration allows the lungs to recoil and regain the intrapleural pressure experienced previously at rest. Elastic recoil is inversely related to lung compliance . This phenomenon occurs because of the elastin in the elastic fibers in the connective tissue of the lungs, and because of the surface tension of the ...

  4. Transpulmonary pressure - Wikipedia

    en.wikipedia.org/wiki/Transpulmonary_pressure

    The alveolar pressure is estimated by measuring the pressure in the airways while holding one's breath. [2] The intrapleural pressure is estimated by measuring the pressure inside a balloon placed in the esophagus. [2] Measurement of transpulmonary pressure assists in spirometry in availing for calculation of static lung compliance.

  5. Respiratory system - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system

    The differences between the atmospheric and intrapulmonary pressures, driving air in and out of the lungs during the breathing cycle, are in the region of only 2–3 kPa. [ 18 ] [ 19 ] A doubling or more of these small pressure differences could be achieved only by very major changes in the breathing effort at high altitudes.

  6. Alveolar pressure - Wikipedia

    en.wikipedia.org/wiki/Alveolar_pressure

    Image illustrating transpulmonary, intrapleural and intra-alveolar pressure. Alveolar pressure (P alv) is the pressure of air inside the lung alveoli.When the glottis is opened and no air is flowing into or out of the lungs, alveolar pressure is equal to the atmospheric pressure, that is, zero cmH 2 O.

  7. Pulmonary gas pressures - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_gas_pressures

    The partial pressure of carbon dioxide, along with the pH, can be used to differentiate between metabolic acidosis, metabolic alkalosis, respiratory acidosis, and respiratory alkalosis. Hypoventilation exists when the ratio of carbon dioxide production to alveolar ventilation increases above normal values – greater than 45mmHg.

  8. 15 holiday gifts for dementia patients and caregivers ...

    www.aol.com/15-holiday-gifts-dementia-patients...

    The Alzheimer's Association released a list of gift recommendations for individuals with the disease at every stage of dementia. Experts offer insights on how to navigate the holiday amid dementia.

  9. Pneumothorax - Wikipedia

    en.wikipedia.org/wiki/Pneumothorax

    Once air enters the pleural cavity, the intrapleural pressure increases, resulting in the difference between the intrapulmonary pressure and the intrapleural pressure (defined as the transpulmonary pressure) to equal zero, which cause the lungs to deflate in contrast to a normal transpulmonary pressure of ~4 mm Hg. [28]