5. CP Respiratory Cycle Flashcards Preview

07. CP Test 1 > 5. CP Respiratory Cycle > Flashcards

Flashcards in 5. CP Respiratory Cycle Deck (9)
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1
Q

What is the normal intrapleural pressure?

A

-5 cm H2O

2
Q

What is the average intrapleural pressure upon full, normal inspiration?

A

-8 cm H2O

3
Q

What is the alveolar pressure during inspiration?

A

-1 cm H2O

4
Q

How much does the volume of the lungs increase during a normal breath?

A

500ml (.5L)

5
Q

When are the expiratory muscles used?

A

During forced expiration only! Gentle inspiration is passive.

6
Q

What is the alveolar pressure at mid expiration?

A

+1 cm H2O

7
Q

How do we calculate minute ventilation?

A

Tidal volume x breaths per minute

8
Q

How do we calculate minute alveolar ventilation?

A

(Tidal volume - dead space) x breaths per minute

9
Q

How do we calculate transpulmonary pressure?

A

Alveolar pressure - intrapleural pressure