An increasing PIP may indicate which of the following? a. ...

[Jramos095]

An increasing PIP may indicate which of the following?
 
  a. Decreasing lung compliance
  b. Decreasing airway resistance
  c. Leak in the ventilator circuit
  d. Increasing dynamic compliance

Question 2

A pathophysiologic condition that causes an increase in peak inspiratory pressure (PIP) while transairway pressure (PTA) remains the same is which of the following?
 
  a. Acute respiratory distress syndrome (ARDS)
  b. Asthma
  c. Emphysema
  d. Chronic bronchitis

[xoxo123]

Answer to Question 1

ANS: A
Compliance is equal to tidal volume divided by peak inspiratory pressure (PIP). If the PIP is ris-ing, the compliance is decreasing. Therefore, the answer is A. An increasing PIP would be caused by a rise in airway resistance and decreased dynamic compliance. A leak in the system would be indicated by a decreased PIP.

Answer to Question 2

ANS: A
An increase in peak inspiratory pressure (PIP) with a constant transairway pressure (PTA) is due to an increase in plateau pressure (Pplateau). The most common reason for a rise in Pplateau is acute res-piratory distress syndrome (ARDS). The three other choices are all obstructive diseases that would cause an increase in the PTA with no significant change in Pplateau.