Exam 2: Ventilation

Which physical law explains elastance?

Which pressure is represented by

What changes in breathing patterns do patients with obstructive pulmonary disorders with increased Rₐw and increased time constants typically adopt?

What is the primary surface tension lowering chemical in pulmonary surfactant?

What is the term for the movement of gas from the external environment to the alveoli ?

What is the term for the difference between the alveolar pressure and the pleural pressure?

Which substance in the alveoli is responsible for lowering the surface tension?

What are the boundaries of anatomic dead space?

How would the addition of a length of tubing between a ventilator and the endotracheal tube affect on dead space?

Which ventilatory pattern is defined as the complete absence of spontaneous breathing?

What is the term for the pressure difference that occurs across the airway wall ?

When the radius of the bronchial airways decreases during exhalation,what change must occur to maintain a constant gas flow?

What is the only absolute way of confirming hyperventilation?

What term is used in respiratory care to describe the movement of gas in and out of the lung and the pressure changes required to move the gas?

In the upright lung,how does compliance vary across the lung?

IWhen the average alveolus is fully distended,,what is the approximate surface tension?

Which flow pattern occurs in airways at high flow rates and high pressure gradients?

Which law best explains the basic operation of the negative pressure ventilator?

What effect will increased Rₐw and increasedCL have on the time constants in the affected lung regions?

When rapid ventilatory rates occur,what is the term for the condition in which positive pressure remains in the alveoli during exhalation due to the insufficient expiratory time?