Question

Predict what happens to air movement when intrapulmonary pressure is 758 mm Hg, intrapleural pressure is 754 mm Hg, and atmospheric pressure is at average sea-level pressure. Predict what happens to air movement when intrapulmonary pressure is 758 mm Hg, intrapleural pressure is 754 mm Hg, and atmospheric pressure is at average sea-level pressure.


Required:

Calculate the predicted vital capacity for a 56-year-old-male who is 188 cm in height

Answer 1

Based on the atmospheric pressure, the intrapulmonary pressure, and the intrapleural pressure, the air movement would be Inspiration.

The predicted vital capacity for the 56 year old male is 4.015 L.

What will be the air movement?

When the intrapleural pressure is less than the intrapulmonary pressure, there will be an inspiration (inhalation) because air would be moving from a high pressure area to a low pressure area.

What is the predicted vital capacity of the 56 year old male?

This can be found as:

=  ((27.63 - (0.112 x Age of person)) x Height) / 1,000

=   ((27.63 - (0.112 x 56)) x 188) / 1,000

= 4.015 L

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