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Exam 18: Analysis and Monitoring of Gas Exchange

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Question 41

Multiple Choice

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How often should blood gas calibration verification by control media take place?

A) At least one level of control media should be analyzed every 8 hours.
B) At least two levels of control media should be analyzed every day.
C) At least two levels of control media should be analyzed every 8 hours.
D) At least two levels of control media should be analyzed every hour.

E) B) and C)
F) A) and B)

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Question 42

Multiple Choice

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Continuous SpO₂ monitoring (versus a spot check) is indicated in all of the following situations except:

A) exercise testing
B) sleep studies
C) bronchoscopy
D) O₂ therapy

E) B) and D)
F) A) and B)

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Question 43

Multiple Choice

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While checking a galvanic fuel cell O₂ analyzer, you determine that the device fails to read 100% when exposed to pure O₂. Which of the following actions would be the proper first step?

A blood gas analyzer measures all of the following except:

To ensure that the output of a blood gas analyzer is both accurate and linear across the range of measured values, a calibration procedure must measure what?

Before attaching a transcutaneous blood gas monitor sensor to a patient, what should you do? I.Provide a specified warm-up time and set the probe temperature. II.Check the membrane and prepare a sensor with an adhesive ring and gel. III.Prepare the monitoring site (remove excess hair and clean the skin) .

All of the following can result in falsely high HbO₂ readings with a laboratory hemoximeter except:

Tissue injuries to be on guard for at the site of transcutaneous blood gas electrode placement include all of the following except which one?

Which of the following would you expect to occur if too much heparin was used in gathering an ABG sample from a patient breathing room air?

Before taking a spot reading with a pulse oximeter, what should you do? I.Allow sufficient response time. II.Set the low alarm to 88% to 90%. III.Confirm adequacy of pulse signal.

Which of the following describes the correct procedure for an Allen test?

At the very beginning of exhalation, the PETCO₂ normally should be at what level?

To avoid transmission of blood-borne diseases when handling a used needle, what should you do? I.Never recap the needle without a safety device (or scoop method) . II.Never handle the needle with both hands, or point it toward the body. III.Never bend, break, or remove the needle from the syringe by hand. IV.Always dispose of the syringe or needle in a proper sharps container.

Which of the following guidelines should you adhere to when performing pulse oximetry? I.Never mix different sensors among different devices. II.Make sure that the sensors are the correct size and are properly applied. III.Avoid using pulse oximetry to monitor hyperoxia in neonates. IV.Whenever possible, validate the initial SpO₂ against the actual SaO₂.

Before a sample of capillary blood is taken, what should you do to the site? I.warmed to 42° C for 10 minutes II.squeezed lightly until blanched III.cleaned with an antiseptic solution

The advantage that point-of-care testing has over traditional laboratory testing is that point-of-care testing:

What is the normal range for end-tidal CO₂ as measured by capnography?

Which blood gas analyzer electrode uses a separate reference electrode?

All of the following are common sites for transcutaneous blood gas electrode placement except the:

All of the following are TRUE about capillary blood gas sampling except: