The rationale behind the use of supplemental oxygen in the ...

[robinn137]

The rationale behind the use of supplemental oxygen in the treatment of sleep apnea is to:
 
  a. preoxygenate the airway prior to the apneic episodes.
  b. stimulate the central chemoreceptors and prevent apneic episodes.
  c. increase the respiratory drive in the medulla.
  d. blow off carbon dioxide in the alveolus.

Question 2

An adult patient with a large pleural effusion requires placement of a thoracostomy tube. Which of the following statements are true regarding thoracostomy tube placement?
 
  1. The tube is placed in the 2nd to 3rd intercostal space.
  2. The tube is placed in the 4th to 5th intercostal space.
  3. The tube is placed in the midclavicular line.
  4. The tube is placed in the midaxillary line.
  a. 1, 4
  b. 2, 3
  c. 1, 3
  d. 2, 4

[dominiqueenicolee]

Answer to Question 1

A
Because of the hypoxemia-related cardiopulmonary complications of sleep apnea (arrhythmias and pulmonary hypertension), nocturnal low-flow oxygen therapy is sometimes used alone to offset or minimize the oxygen desaturation. The reasoning behind the use of nasal oxygen therapy's effectiveness is that the airway is continually flooded with oxygen, which will be inspired during the nonapneic episodesin effect, preoxygenating the patient in anticipation of the apnea events. Usually, no improvement in sleep fragmentation or hypersomnolence occurs with the use of supplemental oxygen.

Answer to Question 2

D
Because fluid pools at the base of the lung, the chest tube is placed in the 4th to 5th intercostal space in the midaxillary line.

[robinn137]

TYSM

[alexanderhamilton]

Excellent