For continuous monitoring of adults and children, you should set a pulse oximeter's low alarm in what range?
a. 80 to 85
b. 85 to 88
c. 88 to 92
d. 93 to 97
Q. 2 Which of the following guidelines should you adhere to when performing pulse oximetry?
1. Mix different sensors among different devices to ensure accuracy.
2. Make sure that the sensors are the correct size and are properly applied.
3. Avoid using pulse oximetry to monitor hyperoxia in neonates.
4. Whenever possible, validate the initial SpO2 against the actual SaO2.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
Q. 3 You are monitoring a nurse acquiring a capillary blood sample from an infant. The nurse immedi-ately punctures the infant's heel with a lancet and then squeezes the puncture site to increase the flow of blood.
What mistakes has the nurse made while obtaining the capillary blood sample?
1. Inadequate warming of the capillary bed
2. Squeezing of the puncture site
3. Puncture of the infant's heel
4. Use of a lancet.
a. 1 and 2 only
b. 3 and 4 only
c. 1, 2, and 3 only
d. 1, 3, and 4 only
Q. 4 Under ideal conditions, pulse oximeter readings patients usually fall in what range of those ob-tained with invasive hemoximetry?
a. 1 to 2
b. 2 to 3
c. 3 to 5
d. 5 to 7
Q. 5 Pulse oximeter readings are generally unreliable at saturations below what level?
a. 70
b. 80
c. 90
d. 95
Q. 6 What is the greatest hazard of pulse oximetry?
a. False results leading to incorrect decisions
b. Pressure sores at the measuring site
c. Skin burns due to using incompatible probes
d. Electrical shock at the measuring site
Q. 7 While monitoring an active infant through a transcutaneous blood gas system, you notice a rapid rise in PtcO2 from 63 to 145 mm Hg. At that same time, the (PtcCO2) drops from 35 to 7 mm Hg. What is the most appropriate action in this case?
a. Perform a quick assessment of the infant's airway.
b. Stabilize the infant and call for emergency assistance.
c. Check the sensor for air leaks or dislodg-ment.
d. Remove the sensor and recalibrate the in-strument.
Q. 8 Indications for pulse oximetry include which of the following?
1. To assess changes in HbO2 during certain procedures
2. To measure abnormal Hb
3. To comply with external regulations or recommendations
4. To monitor the adequacy of HbO2 saturation
a. 1 and 4 only
b. 1, 2, and 4 only
c. 1, 3, and 4 only
d. 1, 2, 3, and 4
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