Question 1

A blood sample is analyzed within a Sanz electrode.The voltage difference = 44.90 mV.What is the resultant pH of this blood?

Accepted Answer

A)  7.11 
B)  7.34 
C)  7.57 
D)  8.18 
A)  7.11 
B)  7.34 
C)  7.57 
D)  8.18

Question 2

What are the two principles of operation for pulse oximetry?
1)Photoplethysmography
2)Tonometry
3)Spectrophotometry
4)Amperometry
5)Potentiometry

Accepted Answer

A)  1 and 3 
B)  2 and 4 
C)  1 and 5 
D)  3 and 5 
A)  1 and 3 
B)  2 and 4 
C)  1 and 5 
D)  3 and 5

Question 3

Which of the following factors will cause analysis of blood gas samples to be erroneous?
1)Warming the sample
2)Low leukocyte counts
3)The presence of air bubbles in the sample
4)Icing the sample between obtaining and analyzing
5)Prolonged time delay between obtaining and analyzing a sample

Accepted Answer

A)  2 and 3 
B)  2 and 4 
C)  1,3,and 5 
D)  1,2,4,and 5 
A)  2 and 3 
B)  2 and 4 
C)  1,3,and 5 
D)  1,2,4,and 5

Question 4

Which of the following will not cause a respiratory acidosis?

Accepted Answer

A)  Diabetes mellitus 
B)  Neuromuscular disorder 
C)  Overdose with sedatives 
D)  Restrictive pulmonary disease 
A)  Diabetes mellitus 
B)  Neuromuscular disorder 
C)  Overdose with sedatives 
D)  Restrictive pulmonary disease

Question 5

Which of the following are important blood tests to perform on a victim of a fire?
1)Na⁺
2)PaO₂
3)O₂Hb
4)HbCO
5)Glucose

Accepted Answer

A)  1 and 2 
B)  3 and 5 
C)  2,3,and 4 
D)  1,3,and 4 
A)  1 and 2 
B)  3 and 5 
C)  2,3,and 4 
D)  1,3,and 4

Question 6

What is the correct interpretation of the following arterial blood gas values: pH of 7.38,PaCO₂ of 38 mm Hg,and HCO₃- of 23 mEq/L?

Accepted Answer

A)  Normal 
B)  Respiratory alkalosis 
C)  Respiratory acidosis 
D)  Metabolic acidosis 
A)  Normal 
B)  Respiratory alkalosis 
C)  Respiratory acidosis 
D)  Metabolic acidosis

Question 7

Which is the correct order of steps to perform the modified Allen test?
1)Pressure is applied to both the radial and ulnar arteries.
2)The fist is opened but not fully extended.
3)Pressure on the ulnar artery is removed.
4)The hand is clenched into a tight fist
5)The palm and fingers are blanched.

Accepted Answer

A)  4,1,2,5,3 
B)  4,5,1,3,2 
C)  1,4,3,2,5 
D)  4,2,1,3,5 
A)  4,1,2,5,3 
B)  4,5,1,3,2 
C)  1,4,3,2,5 
D)  4,2,1,3,5

Question 8

Which is the correct sequence of events when one is obtaining arterial blood from the radial artery of a patient?
1)Perform the modified Allen test.
2)Remove any air bubbles from the sample.
3)Apply direct pressure to the puncture site.
4)Clean the puncture site with a suitable antiseptic solution
5)Use a 23-gauge needle and a plastic syringe containing an anticoagulant.

Accepted Answer

A)  1,4,3,5,2 
B)  4,1,5,2,3 
C)  1,4,5,3,2 
D)  1,5,2,4,3 
A)  1,4,3,5,2 
B)  4,1,5,2,3 
C)  1,4,5,3,2 
D)  1,5,2,4,3

Question 9

The purpose of an Allen test is to check blood flow in the _____ artery.1.ulnar
2)radial
3)brachial
4 posterior tibial
5)lateral plantar

Accepted Answer

A)  1,2,and 3 
B)  2,3,and 4 
C)  1,4,and 5 
D)  3,4,and 5 
A)  1,2,and 3 
B)  2,3,and 4 
C)  1,4,and 5 
D)  3,4,and 5

Question 10

Which site will provide the most accurate pulse oximetry reading in the event of low peripheral perfusion?

Accepted Answer

A)  Toe 
B)  Thumb 
C)  Earlobe 
D)  First digit 
A)  Toe 
B)  Thumb 
C)  Earlobe 
D)  First digit

Question 11

The respiratory system compensates for metabolic problems by changing which of the following levels?

Accepted Answer

A)  H₂O 
B)  HCO₃- 
C)  CO₂ 
D)  HHb 
A)  H₂O 
B)  HCO₃- 
C)  CO₂ 
D)  HHb

Question 12

What are the two wavelengths of light used to determine hemoglobin saturation with a pulse oximeter?

Accepted Answer

A)  550 nm and 730 nm 
B)  660 nm and 940 nm 
C)  730 nm and 940 nm 
D)  550 nm and 840 nm 
A)  550 nm and 730 nm 
B)  660 nm and 940 nm 
C)  730 nm and 940 nm 
D)  550 nm and 840 nm

Question 13

A patient has the following acid-base status: pH = 7.26; PaCO₂= 70 mm Hg; and HCO₃- = 31 mEq/L.Which of the following could be the cause of his arterial blood gas status?

Accepted Answer

A)  Diabetes mellitus 
B)  Salicylate intoxication 
C)  Excess antacid ingestion 
D)  Acute airway obstruction 
A)  Diabetes mellitus 
B)  Salicylate intoxication 
C)  Excess antacid ingestion 
D)  Acute airway obstruction

Question 14

The PCO₂ electrode uses which of the following?

Accepted Answer

A)  HCO₃- solution 
B)  Mercury bead 
C)  KCl solution 
D)  Silver anode 
A)  HCO₃- solution 
B)  Mercury bead 
C)  KCl solution 
D)  Silver anode

Question 15

During the calibration of a transcutaneous electrode,the signal is found to be drifting.Which of the following is the most appropriate action to take?

Accepted Answer

A)  Move the electrode to another site. 
B)  Increase the temperature of the electrode. 
C)  Clean off the silver deposit on the cathode. 
D)  Change the electrolyte and the sensor membrane. 
A)  Move the electrode to another site. 
B)  Increase the temperature of the electrode. 
C)  Clean off the silver deposit on the cathode. 
D)  Change the electrolyte and the sensor membrane.

Question 16

The oxygenation status of a burn victim is most appropriately measured by which of the following?

Accepted Answer

A)  CO-oximeter 
B)  Pulse oximeter 
C)  In vitro blood gas analyzer 
D)  In vivo blood gas monitor 
A)  CO-oximeter 
B)  Pulse oximeter 
C)  In vitro blood gas analyzer 
D)  In vivo blood gas monitor

Question 17

Which of the following cause erroneous transcutaneous oxygen (PtcO₂)readings?
1)Hypovolemia
2)Hypothermia
3)Septic shock
4)Asthma

Accepted Answer

A)  1 and 3 
B)  1 and 4 
C)  1,2,and 3 
D)  2,3,and 4 
A)  1 and 3 
B)  1 and 4 
C)  1,2,and 3 
D)  2,3,and 4

Question 18

What type of electrode is used to measure calcium and sodium?

Accepted Answer

A)  Clark 
B)  Ion-selective 
C)  Polarographic 
D)  Glucose-oxidase 
A)  Clark 
B)  Ion-selective 
C)  Polarographic 
D)  Glucose-oxidase

Question 19

Respiratory alkalosis may be caused by which of the following?

Accepted Answer

A)  Vomiting 
B)  Salicylate overdose 
C)  Hyperventilation 
D)  Pneumothorax 
A)  Vomiting 
B)  Salicylate overdose 
C)  Hyperventilation 
D)  Pneumothorax

Question 20

A 38-year-old woman is currently in the emergency department and has a diagnosis of an asthma attack.The most current arterial blood gas result reveals the following: pH of 7.24; PaCO₂ of 55 mm Hg; and an HCO₃- of 27 mEq/L.The acid-base status of this patient can be interpreted as:

Accepted Answer

A)  uncompensated respiratory acidosis. 
B)  partially compensated respiratory acidosis. 
C)  partially compensated metabolic alkalosis. 
D)  partially compensated metabolic acidosis. 
A)  uncompensated respiratory acidosis. 
B)  partially compensated respiratory acidosis. 
C)  partially compensated metabolic alkalosis. 
D)  partially compensated metabolic acidosis.

A blood sample is analyzed within a Sanz electrode.The voltage difference = 44.90 mV.What is the resultant pH of this blood?

What are the two principles of operation for pulse oximetry? 1)Photoplethysmography 2)Tonometry 3)Spectrophotometry 4)Amperometry 5)Potentiometry

Which of the following factors will cause analysis of blood gas samples to be erroneous? 1)Warming the sample 2)Low leukocyte counts 3)The presence of air bubbles in the sample 4)Icing the sample between obtaining and analyzing 5)Prolonged time delay between obtaining and analyzing a sample

Which of the following will not cause a respiratory acidosis?

Which of the following are important blood tests to perform on a victim of a fire? 1)Na⁺ 2)PaO₂ 3)O₂Hb 4)HbCO 5)Glucose

What is the correct interpretation of the following arterial blood gas values: pH of 7.38,PaCO₂ of 38 mm Hg,and HCO₃- of 23 mEq/L?

Which is the correct order of steps to perform the modified Allen test? 1)Pressure is applied to both the radial and ulnar arteries. 2)The fist is opened but not fully extended. 3)Pressure on the ulnar artery is removed. 4)The hand is clenched into a tight fist 5)The palm and fingers are blanched.

The purpose of an Allen test is to check blood flow in the _____ artery.1.ulnar 2)radial 3)brachial 4 posterior tibial 5)lateral plantar

Which site will provide the most accurate pulse oximetry reading in the event of low peripheral perfusion?

The respiratory system compensates for metabolic problems by changing which of the following levels?

What are the two wavelengths of light used to determine hemoglobin saturation with a pulse oximeter?

A patient has the following acid-base status: pH = 7.26; PaCO₂= 70 mm Hg; and HCO₃- = 31 mEq/L.Which of the following could be the cause of his arterial blood gas status?

The PCO₂ electrode uses which of the following?

During the calibration of a transcutaneous electrode,the signal is found to be drifting.Which of the following is the most appropriate action to take?

The oxygenation status of a burn victim is most appropriately measured by which of the following?

Which of the following cause erroneous transcutaneous oxygen (PtcO₂)readings? 1)Hypovolemia 2)Hypothermia 3)Septic shock 4)Asthma

What type of electrode is used to measure calcium and sodium?

Respiratory alkalosis may be caused by which of the following?

A 38-year-old woman is currently in the emergency department and has a diagnosis of an asthma attack.The most current arterial blood gas result reveals the following: pH of 7.24; PaCO₂ of 55 mm Hg; and an HCO₃- of 27 mEq/L.The acid-base status of this patient can be interpreted as:

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

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Exam 10: Blood Gas Monitoring

A blood sample is analyzed within a Sanz electrode.The voltage difference = 44.90 mV.What is the resultant pH of this blood?

What are the two principles of operation for pulse oximetry? 1)Photoplethysmography 2)Tonometry 3)Spectrophotometry 4)Amperometry 5)Potentiometry

Which of the following factors will cause analysis of blood gas samples to be erroneous? 1)Warming the sample 2)Low leukocyte counts 3)The presence of air bubbles in the sample 4)Icing the sample between obtaining and analyzing 5)Prolonged time delay between obtaining and analyzing a sample

Which of the following will not cause a respiratory acidosis?

Which of the following are important blood tests to perform on a victim of a fire? 1)Na⁺ 2)PaO₂ 3)O₂Hb 4)HbCO 5)Glucose

What is the correct interpretation of the following arterial blood gas values: pH of 7.38,PaCO₂ of 38 mm Hg,and HCO₃- of 23 mEq/L?

Which is the correct order of steps to perform the modified Allen test? 1)Pressure is applied to both the radial and ulnar arteries. 2)The fist is opened but not fully extended. 3)Pressure on the ulnar artery is removed. 4)The hand is clenched into a tight fist 5)The palm and fingers are blanched.

The purpose of an Allen test is to check blood flow in the _____ artery.1.ulnar 2)radial 3)brachial 4 posterior tibial 5)lateral plantar

Which site will provide the most accurate pulse oximetry reading in the event of low peripheral perfusion?

The respiratory system compensates for metabolic problems by changing which of the following levels?

What are the two wavelengths of light used to determine hemoglobin saturation with a pulse oximeter?

A patient has the following acid-base status: pH = 7.26; PaCO₂= 70 mm Hg; and HCO₃- = 31 mEq/L.Which of the following could be the cause of his arterial blood gas status?

The PCO₂ electrode uses which of the following?

During the calibration of a transcutaneous electrode,the signal is found to be drifting.Which of the following is the most appropriate action to take?

The oxygenation status of a burn victim is most appropriately measured by which of the following?

Which of the following cause erroneous transcutaneous oxygen (PtcO₂)readings? 1)Hypovolemia 2)Hypothermia 3)Septic shock 4)Asthma

What type of electrode is used to measure calcium and sodium?

Respiratory alkalosis may be caused by which of the following?

A 38-year-old woman is currently in the emergency department and has a diagnosis of an asthma attack.The most current arterial blood gas result reveals the following: pH of 7.24; PaCO₂ of 55 mm Hg; and an HCO₃- of 27 mEq/L.The acid-base status of this patient can be interpreted as:

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters