Question 1

Given the following blood parameters, compute the total O2 content (dissolved + HbO2) of the blood in ml/dl: Hb = 16; PO2 = 625 Hg; SO2 = 100%.

Accepted Answer

A)  17.8 ml/dl 
B)  19.4 ml/dl 
C)  21.4 ml/dl 
D)  23.3 ml/dl 
A)  17.8 ml/dl 
B)  19.4 ml/dl 
C)  21.4 ml/dl 
D)  23.3 ml/dl

Question 2

When Hb saturation with O2 is high, less carbon dioxide is carried in the blood. What is this relationship called?

Accepted Answer

A)  Bohr effect 
B)  Chloride shift 
C)  Dissociation constant 
D)  Haldane effect 
A)  Bohr effect 
B)  Chloride shift 
C)  Dissociation constant 
D)  Haldane effect

Question 3

What occurs in the bases of the lung when a person is standing upright?

Accepted Answer

A)  The PAO2 is higher than normal. 
B)  The respiratory exchange ratio is elevated. 
C)  There is significant dead space under normal conditions. 
D)  Theis lower than the average. 
A)  The PAO2 is higher than normal. 
B)  The respiratory exchange ratio is elevated. 
C)  There is significant dead space under normal conditions. 
D)  Theis lower than the average.

Question 4

Which of these statements applies to the following reaction: Prot-NH2 + CO2 Prot-NHCOO- + H+?

Accepted Answer

A)  Approximately 20% of the total blood carbon dioxide is carried in this form. 
B)  It is second in importance to only the bicarbonate buffer system. 
C)  It represents the formation of blood carbamino compounds. 
D)  The resulting H+ ions are buffered by reduced HCO3. 
A)  Approximately 20% of the total blood carbon dioxide is carried in this form. 
B)  It is second in importance to only the bicarbonate buffer system. 
C)  It represents the formation of blood carbamino compounds. 
D)  The resulting H+ ions are buffered by reduced HCO3.

Question 5

What role does the Bohr effect play in O2 transport?

Accepted Answer

A)  Describes the effect of varying enzyme levels on Hb and O2 affinity. 
B)  Diminishes tissue oxygenation due to electrolyte imbalances. 
C)  Enhances O2 delivery to tissues and O2 pickup at lungs. 
D)  Explains the effect that O2 levels have on carbon dioxide transport. 
A)  Describes the effect of varying enzyme levels on Hb and O2 affinity. 
B)  Diminishes tissue oxygenation due to electrolyte imbalances. 
C)  Enhances O2 delivery to tissues and O2 pickup at lungs. 
D)  Explains the effect that O2 levels have on carbon dioxide transport.

Question 6

Disorders that can lead to alveolar dead space include:
1) pulmonary emboli.
2) partial obstruction of the pulmonary vasculature.
3) destroyed pulmonary vasculature.
4) reduced cardiac output.

Accepted Answer

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

Question 7

A 70-kg male patient has a CO2 of 200 ml/min and a VA of 9 L/min. From this information, what can you infer?

Accepted Answer

A)  The patient's carbon dioxide production is abnormally low. 
B)  The patient's A is abnormally low. 
C)  The patient will have a lower than normal PACO2. 
D)  The patient will have a higher than normal PACO2. 
A)  The patient's carbon dioxide production is abnormally low. 
B)  The patient's A is abnormally low. 
C)  The patient will have a lower than normal PACO2. 
D)  The patient will have a higher than normal PACO2.

Question 8

A patient has a whole-body O2 consumption of 320 ml/min and a measured CaO2 - CO2 of 8 ml/dl. What is the cardiac output?

Accepted Answer

A)  3.2 L/min 
B)  4.0 L/min 
C)  5.0 L/min 
D)  7.0 L/min 
A)  3.2 L/min 
B)  4.0 L/min 
C)  5.0 L/min 
D)  7.0 L/min

Exam 12: Gas Exchange and Transport

Given the following blood parameters, compute the total O2 content (dissolved + HbO2) of the blood in ml/dl: Hb = 16; PO2 = 625 Hg; SO2 = 100%.

When Hb saturation with O2 is high, less carbon dioxide is carried in the blood. What is this relationship called?

What occurs in the bases of the lung when a person is standing upright?

Which of these statements applies to the following reaction: Prot-NH2 + CO2 Prot-NHCOO- + H+?

What role does the Bohr effect play in O2 transport?

Disorders that can lead to alveolar dead space include: 1) pulmonary emboli. 2) partial obstruction of the pulmonary vasculature. 3) destroyed pulmonary vasculature. 4) reduced cardiac output.

A 70-kg male patient has a CO2 of 200 ml/min and a VA of 9 L/min. From this information, what can you infer?

A patient has a whole-body O2 consumption of 320 ml/min and a measured CaO2 - CO2 of 8 ml/dl. What is the cardiac output?

History of Respiratory Care

Delivering Evidence-Based Respiratory Care

Quality, Patient Safety, and Communication, and Recordkeeping

Principles of Infection Prevention and Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

E-Medicine in Respiratory Care

Fundamentals of Respiratory Care Research

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The Cardiovascular System

Ventilation

Solutions, Body Fluids, and Electrolytes

Acid-Base Balance

Regulation of Breathing

Bedside Assessment of the Patient

Interpreting Clinical and Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

Pulmonary Function Testing

Review of Thoracic Imaging

Flexible Bronchoscopy and the Respiratory Therapist

Nutrition Assessment

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Respiratory Failure and the Need for Ventilatory Support

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Physiology of Ventilatory Support

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Filters

Given the following blood parameters, compute the total O₂ content (dissolved + HbO₂) of the blood in ml/dl: Hb = 16; PO₂ = 625 Hg; SO₂ = 100%.

When Hb saturation with O₂ is high, less carbon dioxide is carried in the blood. What is this relationship called?

Which of these statements applies to the following reaction: Prot-NH₂ + CO₂ Prot-NHCOO^- + H⁺?

What role does the Bohr effect play in O₂ transport?

A 70-kg male patient has a CO₂of 200 ml/min and a V_A of 9 L/min. From this information, what can you infer?

A patient has a whole-body O₂ consumption of 320 ml/min and a measured CaO₂ - CO₂of 8 ml/dl. What is the cardiac output?