MEDICAL
PLEURA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pressure which is lower in inspiration
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The lower the expiratory pressure
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The pressure that is higher on inspiration
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Pressure that is higher on expiration
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The pressure is always the same during inspiration and expiration
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Detailed explanation-1: -Transpulmonary pressure is the difference between the alveolar pressure and the intrapleural pressure in the pleural cavity. During human ventilation, air flows because of pressure gradients. Ptp = Palv – Pip. Where Ptp is transpulmonary pressure, Palv is alveolar pressure, and Pip is intrapleural pressure.
Detailed explanation-2: -The transpulmonary pressure, PL, represents the distending pressure across the lungs, which is the difference between the airway pressure and the pleural pressure. It is an essential concept because it represents the pressure that effectively promotes air flow and distends the lungs.
Detailed explanation-3: -Transpulmonary pressure (TPP) is the net distending pressure applied to the lung by contraction of the inspiratory muscles or by positive-pressure ventilation. TPP is the difference between alveolar pressure (Palv) and pleural pressure (Ppl); i.e. TPP = Palv – Ppl.