Which of the following intermittent positive-pressure breathing ...

[robinn137]

Which of the following intermittent positive-pressure breathing machines can deliver 100 oxy-gen?
 
  a. Bird Mark 10 c. Puritan Bennett AP-5
  b. Bird Mark 14 d. Puritan Bennett PR-2

Question 2

A patient who is receiving intermittent positive-pressure breathing therapy for atelectasis now exhibits improved breath sounds and an increased ability to clear secretions.
 
  Chest radiography reveals improvement, but not total resolution, of atelectasis. The intermittent positive-pressure breathing therapy is discontinued. What is the most appropriate action at this time?
  a. Flutter valve
  b. Incentive spirometry
  c. Continuous positive airway pressure
  d. Intrapulmonary percussive ventilation (IPV)

[hanadaa]

Answer to Question 1

ANS: D
The Puritan Bennett PR-2 can deliver either 100 source gas or air-diluted source gas. The Bird Mark 10 and Mark 14 ventilators do not have an air-mix control, which means that they can op-erate only in the air-dilution mode. The gas in the Puritan Bennett AP-5 unit is provided by an air compressor and a Venturi jet that entrains additional air; there is no means to attach a gas source.

Answer to Question 2

ANS: B
The patient's increased ability to clear secretions, improved breath sounds, and improved chest radiograph demonstrate an improvement in his atelectasis and overall condition. At this time, stepping-down therapy would be appropriate. The most appropriate physiologic therapy that targets atelectasis is incentive spirometry. Flutter valve and intrapulmonary percussive ventilation are therapies for mobilizing retained secretions, and continuous positive airway pressure should be used when atelectasis fails to respond to incentive spirometry and intermittent posi-tive-pressure breathing.