Question 1

Which of the following reference electrodes does the pH (Sanz) system use?

Accepted Answer

A)  calomel electrode 
B)  Clark electrode 
C)  Severinghaus electrode 
D)  Silver/silver chloride electrode

Question 2

Which of the following are true regarding home sleep monitors?
I. Oxygen saturation is monitored.
II. Snoring is monitored.
III. Abdominal effort is monitored.
IV. Airflow is monitored.

Accepted Answer

A)  I 
B)  I and II 
C)  I, II, and III 
D)  I, II, III, and IV

Question 3

Six or more quality-control results moving toward one side of the mean is termed:

Accepted Answer

A)  a shift 
B)  a trend 
C)  an average 
D)  a standard deviation

Question 4

Which of the following should be performed when calibrating an oxygen analyzer?

Accepted Answer

A)  Expose the sensor to 100% oxygen in a loosely closed container. 
B)  Expose the sensor to 21% oxygen. 
C)  Both a and b 
D)  none of the above

Question 5

Most apnea monitors operate using the principle of:
I. body plethysmography
II. impedance plethysmography
III. inductive plethysmography
IV. capnometry

Accepted Answer

A)  I and II 
B)  II and III 
C)  I and III 
D)  III and IV

Question 6

Which of the following are components to a pH-measuring system in a blood gas analyzer?
I. pH glass
II. calomel reference electrode
III. pH-measuring electrode
IV. salt bridge

Accepted Answer

A)  I 
B)  I and II 
C)  I, II, and III 
D)  I, II, III, and IV

Question 7

Which of the following would be an electrical principle of operation used by an oxygen analyzer?

Accepted Answer

A)  galvanic 
B)  paramagnetism 
C)  polarographic 
D)  thermoconductivity

Question 8

Which of the following uses a thermistor to measure flow?

Accepted Answer

A)  pitot tube flow sensor 
B)  Fleisch pneumotachometer 
C)  thermal anemometer 
D)  venturi pneumotachometer

Question 9

Which of the following are advantages of a Stead-Wells water seal spirometer compared with a chain-compensated water seal spirometer?
I. higher frequency response
II. can measure subtle flow rates
III. less affected by inertia
IV. more accurate volume measurement

Accepted Answer

A)  I 
B)  I and II 
C)  I, II, and III 
D)  I, II, III, and IV

Question 10

What are the indications for pulse oximetry according to the American Association for Respiratory Care (AARC) Clinical Practice Guideline: Pulse Oximetry?
I. need to monitor oxyhemoglobin saturation
II. need to assess response to therapeutic intervention
III. need to comply with mandated regulations and recommendations

Accepted Answer

A)  I only 
B)  II only 
C)  I and II only 
D)  I, II, and III only

Question 11

A method of quality control that equilibrates whole blood with a known gas concentration is termed:

Accepted Answer

A)  analysis control 
B)  trending 
C)  aqueous controls 
D)  tonometry

Question 12

A PCO2 measuring system measures PCO2:

Accepted Answer

A)  directly 
B)  indirectly 
C)  proportionally 
D)  percent

Question 13

A co-oximeter can provide a measurement of all hemoglobin variants, while a pulse oximeter can only measure functional hemoglobin. Why does a pulse oximeter only measure functional hemoglobin?

Accepted Answer

A)  It uses four wavelengths of light. 
B)  It uses two wavelengths of light. 
C)  It doesn't measure a hemolized sample. 
D)  none of the above

Question 14

Which of the following are techniques used by nitric-oxide monitoring equipment?
I. electrochemical
II. spectrophotometry
III. chemiluminescence
IV. thermoconductivity

Accepted Answer

A)  I and II 
B)  I and III 
C)  II and III 
D)  II and IV

Question 15

Which of the following is used by the PO2 electrode as a membrane?

Accepted Answer

A)  polypropylene 
B)  nylon 
C)  Teflon 
D)  zirconium

Question 16

Which of the following would be a physical principle of operation used by an oxygen analyzer?

Accepted Answer

A)  galvanic 
B)  paramagnetism 
C)  polarographic 
D)  thermoconductivity

Question 17

You are instructing a patient to use a Wright respirometer to measure a vital capacity. Which of the following should you include in your instructions to your patient?
I. Blow slowly and gently when you exhale.
II. Inhale completely until your lungs are full.
III. Blow as hard and as fast as you can.
IV. Keep blowing until your lungs are completely empty.

Accepted Answer

A)  I and II 
B)  II and III 
C)  I, II, and IV 
D)  II, III, and IV

Question 18

A non-invasive method of measuring PO2 and PCO2 respectively using a miniaturized version of a Clark and Severinghaus electrode is:

Accepted Answer

A)  pulse oximetry 
B)  end-tidal CO2 monitoring 
C)  capnography 
D)  transcutaneous monitoring

Question 19

How do end-tidal CO2 monitors measure the CO2 in the exhaled gas?

Accepted Answer

A)  photochemical cells 
B)  electrochemical cells 
C)  infrared photospectrometry 
D)  thermoconductivity

Question 20

Which of the following are criteria for the design of a reference cell for pH/blood gas analysis?
I. Reaction is reversible.
II. Reaction is stable.
III. Reaction is reproducible.

Accepted Answer

A)  I 
B)  I and II 
C)  II and III 
D)  I, II, and III

Exam 6: Physiological Measurement and Monitoring Devices

Which of the following reference electrodes does the pH (Sanz) system use?

Which of the following are true regarding home sleep monitors? I. Oxygen saturation is monitored. II. Snoring is monitored. III. Abdominal effort is monitored. IV. Airflow is monitored.

Six or more quality-control results moving toward one side of the mean is termed:

Which of the following should be performed when calibrating an oxygen analyzer?

Most apnea monitors operate using the principle of: I. body plethysmography II. impedance plethysmography III. inductive plethysmography IV. capnometry

Which of the following are components to a pH-measuring system in a blood gas analyzer? I. pH glass II. calomel reference electrode III. pH-measuring electrode IV. salt bridge

Which of the following would be an electrical principle of operation used by an oxygen analyzer?

Which of the following uses a thermistor to measure flow?

Which of the following are advantages of a Stead-Wells water seal spirometer compared with a chain-compensated water seal spirometer? I. higher frequency response II. can measure subtle flow rates III. less affected by inertia IV. more accurate volume measurement

A method of quality control that equilibrates whole blood with a known gas concentration is termed:

A PCO₂ measuring system measures PCO₂:

A co-oximeter can provide a measurement of all hemoglobin variants, while a pulse oximeter can only measure functional hemoglobin. Why does a pulse oximeter only measure functional hemoglobin?

Which of the following are techniques used by nitric-oxide monitoring equipment? I. electrochemical II. spectrophotometry III. chemiluminescence IV. thermoconductivity

Which of the following is used by the PO₂ electrode as a membrane?

Which of the following would be a physical principle of operation used by an oxygen analyzer?

A non-invasive method of measuring PO₂ and PCO₂ respectively using a miniaturized version of a Clark and Severinghaus electrode is:

How do end-tidal CO₂ monitors measure the CO₂ in the exhaled gas?

Which of the following are criteria for the design of a reference cell for pH/blood gas analysis? I. Reaction is reversible. II. Reaction is stable. III. Reaction is reproducible.