The nurse is examining an 8-year-old boy with tachycardia and tachypnea. The nurse anticipates which of the following as most helpful in determining the extent of the child's hypoxia?
A) Pulmonary function test
B) Pulse oximetry
C) Peak expiratory flow
D) Chest radiograph
B
Feedback:
Pulse oximetry is a useful tool for determining the extent of hypoxia. It can be used by the nurse for continuous or intermittent monitoring. Pulmonary function testing measures respiratory flow and lung volumes and is indicated for asthma, cystic fibrosis, and chronic lung disease. Peak expiratory flow testing is used to monitor the adequacy of asthma control. Chest radiographs can show hyperinflation, atelectasis, pneumonia, foreign bodies, pleural effusion, and abnormal heart or lung size.
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