What risk(s) is (are) there in positive-pressure ventilation ...

[casperchen82]

What risk(s) is (are) there in positive-pressure ventilation before all meconium has been removed from the airways?
 
  1. Forcing meconium into the lower airways
  2. Pneumothorax
  3. Triggering persistent pulmonary hypertension of the neonate (PPHN)
  4. Triggering an asthma attack
  a. 2
  b. 3
  c. 1, 2
  d. 2, 3, 4

Question 2

While assessing a patient who was involved in a serious car crash and hit his steering wheel, the respiratory therapist observes that a section of his left anterior chest wall sinks inward during inspiration. What is the most likely cause?
 
  a. Pulmonary fibrosis
  b. Flail chest
  c. Pneumothorax
  d. Cardiac tamponade

[Carissamariew]

Answer to Question 1

C
Positive-pressure ventilation can force any meconium from the upper airway down into the smaller airways. This can result in a ball-valve type of obstruction to exhalation. The trapped air can cause hyperinflation that can lead to a pneumothorax. PPHN and asthma are not linked to positive-pressure ventilation.

Answer to Question 2

B
A flail segment of a flail chest would move inward during inspiration, opposite of normal chest wall movement.