The contraction of the diaphragm triggers the intrapleural pressure to decrease, leading to an expansion of alveoli.
2.
Where P tp is transpulmonary pressure, P alv is alveolar pressure, and P ip is intrapleural pressure.
3.
"' Dynamic compression of the airways "'results when intrapleural pressure equals or exceeds alveolar pressure, which causes dynamic collapsing of the lung airways.
4.
It is termed " dynamic " given the transpulmonary pressure ( alveolar pressure " intrapleural pressure ) varies based on factors including lung volume, resistance, existing pathologies, etc.
5.
During inspiration, intrapleural pressure decreases by up to 4 mm Hg, which distends the right atrium, allowing for faster filling from the vena cava, increasing ventricular preload, but decreasing stroke volume.
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