UPLOAD |GRADED A+
A respiratory therapist has been ordered to obtain a blood gas sample from a nonintubated
premature baby. After selecting the best site to obtain the sample, what should the RT
suggest to ameliorate the pain associated with the procedure?
a.
Administer a small dose of fentanyl
b.
Inject lidocaine at the injection site
c.
Give a pacifier dipped in 24% sucrose
d.
Administer a lidocaine drip - correct answer-C
Which of the following arteries is considered the optimal puncture site for obtaining arterial
blood samples from a pediatric patient?
a.
Radial artery
b.
Axillary artery
c.
Ulnar artery
d.
Popliteal artery - correct answer-a
In addition to the dorsalis pedis, which of the following arteries is involved when the
modified Allen's test is performed using a foot as the potential arterial puncture site?
a.
Axillary artery
b.
Femoral artery
c.
Posterior tibial artery
d.
A modified Allen's test cannot be done using a foot - correct answer-C
,The neonatal intensive care unit (NICU) respiratory therapy supervisor is observing a
therapist obtain an arterial blood sample from an infant's radial artery and notices that the
therapist has the bevel of the needle pointed upward, entering the patient's skin at a 45-
degree angle and in a direction against the arterial flow. What should the supervisor do at
this time?
a.
Continue to observe the procedure.
b.
Inform the therapist to turn the bevel downward.
c.
Tell the therapist to penetrate the infant's skin at about a 60-degree angle.
d.
Advise the therapist to insert the needle in the same direction as the blood flows. - correct
answer-a
Which of the following conditions can cause methemoglobinemia?
a.
Anemia
b.
Inhalation of nitric oxide (NO)
c.
Use of dobutamine
d.
High fraction of inspired oxygen - correct answer-b
Which of the following factors would adversely affect the correlation between arterial
puncture measurements and those from a capillary sample?
a.
Hypotension
b.
Hyperventilation
c.
Hypoxemia
d.
Hyperthermia - correct answer-a
What clinical parameter is critically important to monitor when mechanical ventilation is
administered?
, a.
Blood pressure
b.
Heart rate
c.
Temperature
d.
Respiratory rate - correct answer-a
The therapist has been asked to measure preductal oxygen saturation. Where could the
therapist place the pulse oximeter probe?
a.
Right thumb
b.
Left leg
c.
Right leg
d.
Left earlobe - correct answer-a
A therapist is monitoring a child on the mechanical ventilator who is hemodynamically
stable. The PetCO2 is 48 mm Hg. If accurate, what should be the PaCO2?
a.
43 to 48 mm Hg
b.
45 to 48 mm Hg
c.
50 to 53 mm Hg
d.
Exactly the same as PetCO2 - correct answer-a
Why do transcutaneous oxygen tension (PO2) and carbon dioxide tension (PCO2) values
differ from PaO2 and PaCO2 measurements?
a.
Because of the lag time between the cardiac output and the time the blood reaches the
transcutaneous electrode site
b.
Because the skin is much more permeable to oxygen than carbon dioxide