Decreased surfactant production in the preterm lung is a problem because surfactant
a. Causes increased permeability of the alveoli
b. Provides transportation for oxygen to enter the blood supply
c. Keeps the alveoli open during expiration
d. Dilates the bronchioles, decreasing airway resistance
C
Feedback
A Surfactant prevents the alveoli from collapsing.
B By keeping the alveoli open, it permits better oxygen exchange, but that is not its
main purpose.
C Surfactant prevents the alveoli from collapsing each time the infant exhales, thus
reducing the work of breathing.
D It does not affect the bronchioles.
You might also like to view...
The nurse is caring for a patient who has atrial fibrillation. Sequelae that place the patient at greater risk for mortality/morbidity include which of the following? (Select all that apply.)
a. Stroke b. Ashman beats c. Pulmonary emboli d. Prolonged PR interval e. Decreased cardiac output
A student in your class asks a nurse researcher why research assistants who participate in a clinical research study as data collectors need to be trained. What rationale would you offer to support the establishment of inter-rater reliability?
What will be an ideal response?
A nurse is caring for a client with renal calculi. What measure should the nurse employ for this client?
A) Encourage the client to drink at least 1 liter of fluids daily. B) Strain all urine through a piece of gauze, cheesecloth, or strainer. C) Ask the client to try to avoid ambulating, if possible. D) Encourage the client to consume plenty of dairy products.
In recent years, Kim has been experiencing increasing levels of anxiety when she is in large crowds. She has recently begun behavioral therapy, which will emphasize which of the following components?
A) Hypnotherapy B) Identifying seminal childhood moments that may have contributed to the problem C) Identifying and promoting adaptive behaviors to reduce anxiety D) Uncovering trauma that may be the unconscious source of anxiety