Premature infants are frequently unable to compensate for metabolic acidosis because
A) they are unable to hyperventilate
B) their kidneys are unable to efficiently reabsorb hydrogen ions
C) they are unable to hypoventilate
D) they are unable to vomit
Q. 2 You are using a ventilator that has flow as a control variable. Under which of the following modes of ventilation is flow a control variable?
I. mandatory volume breath delivery
II. PEEP/CPAP
III. sigh breath delivery
IV. pressure support
A) I and II
B) I and III
C) II and III
D) II and IV
Q. 3 pH values using arterial blood gas analysis are an objective measurement of which of the following?
A) acid-base balance
B) bicarbonate
C) oxygen saturation
D) hemoglobin
Q. 4 The primary difference between pressure support and CPAP is:
A) CPAP only provides pressure during inspiration
B) Pressure support augments spontaneous breaths with a set pressure
C) CPAP unlike pressure support allows the clinician to set a baseline pressure
D) Pressure support allows the clinician to set a rate
Q. 5 A respiratory therapist suspects a right-to-left shunt through the patent ductus arteriosus (PDA) in a neonatal patient. Which of the following should be performed simultaneously with the umbilical artery catheter (UAC) blood gas to compare oxygen pressures?
A) collection of a left radial arterial sample
B) collection of a right radial arterial sample
C) placement of a transcutaneous PaO2 monitor
D) collection of a capillary sample
Q. 6 Which of the following modes of ventilation maintains spontaneous breathing?
A) volume control - CMV
B) volume control - SIMV
C) pressure control - SIMV
D) pressure control - APRV
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