Question 1

What is the minimum desaturated hemoglobin concentration in the capillaries when most observers perceive cyanosis?

Accepted Answer

A)  5 g/dL 
B)  7 g/dL 
C)  9 g/dL 
D)  11 g/dL 
A)  5 g/dL 
B)  7 g/dL 
C)  9 g/dL 
D)  11 g/dL

Question 2

Which of the following levels of PO2 is associated with sharp decreases in oxygen saturation and content?

Accepted Answer

A)  <40 mm Hg 
B)  <60 mm Hg 
C)  <80 mm Hg 
D)  <100 mm Hg 
A)  <40 mm Hg 
B)  <60 mm Hg 
C)  <80 mm Hg 
D)  <100 mm Hg

Question 3

What is the normal amount of oxygen extracted by the tissues for each 100 mL of blood?

Accepted Answer

A)  5 mL/dL 
B)  10 mL/dL 
C)  15 mL/dL 
D)  20 mL/dL 
A)  5 mL/dL 
B)  10 mL/dL 
C)  15 mL/dL 
D)  20 mL/dL

Question 4

What is the interpretation of a decrease in the C(a - $ \bar{V} $ )O2?

Accepted Answer

A)  A decrease in the oxygen extraction ratio 
B)  A reduction in cardiac output 
C)  An increase in cardiac output 
D)  A decrease in the Hb level 
A)  A decrease in the oxygen extraction ratio 
B)  A reduction in cardiac output 
C)  An increase in cardiac output 
D)  A decrease in the Hb level

Question 5

Which of the following terms describes the unoxygenated hemoglobin?

Accepted Answer

A)  Carboxyhemoglobin 
B)  Reduced hemoglobin 
C)  Deoxyhemoglobin 
D)  Methemoglobin 
A)  Carboxyhemoglobin 
B)  Reduced hemoglobin 
C)  Deoxyhemoglobin 
D)  Methemoglobin

Question 6

Which of the following is the conventionally accepted value for hemoglobin's oxygen-carrying capacity?

Accepted Answer

A)  1.34 mL of oxygen per gram of hemoglobin 
B)  1.39 mL of oxygen per gram of hemoglobin 
C)  2.34 mL of oxygen per gram of hemoglobin 
D)  2.39 mL of oxygen per gram of hemoglobin 
A)  1.34 mL of oxygen per gram of hemoglobin 
B)  1.39 mL of oxygen per gram of hemoglobin 
C)  2.34 mL of oxygen per gram of hemoglobin 
D)  2.39 mL of oxygen per gram of hemoglobin

Question 7

Which of the following are statements related to P50?
I.Normally, a PO2 of 27 mm Hg produces an SO2 of 50%.
II.The P50 is a measure of hemoglobin's affinity for oxygen.
III.A normal P50 is accurate when the blood temperature is 37° C, pH is 7.40, and PCO2 is 40 mm Hg.
IV.Normally, a PO2 of 47 mm Hg produces an SO2 of 50%.

Accepted Answer

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

Question 8

How many times the body tissues' resting requirement is oxygen delivery?

Accepted Answer

A)  Two times 
B)  Three times 
C)  Four times 
D)  Five times 
A)  Two times 
B)  Three times 
C)  Four times 
D)  Five times

Question 9

Which of the following factors affect oxygen delivery to the tissues?
I.Hemoglobin concentration
II.Arterial hemoglobin saturation with oxygen
III.Cardiac output
IV.PCO2 level

Accepted Answer

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

Question 10

What is the rationale behind using an FIO2 of 1.0 to manage patients with acute CO poisoning?

Accepted Answer

A)  An FIO2 of 1.0 greatly decreases the half-life of HbCO. 
B)  An FIO2 of 1.0 greatly increases the half-life of HbCO. 
C)  An FIO2 of 1.0 greatly decreases the Hb affinity for CO. 
D)  An FIO2 of 1.0 greatly increases the Hb affinity for CO. 
A)  An FIO2 of 1.0 greatly decreases the half-life of HbCO. 
B)  An FIO2 of 1.0 greatly increases the half-life of HbCO. 
C)  An FIO2 of 1.0 greatly decreases the Hb affinity for CO. 
D)  An FIO2 of 1.0 greatly increases the Hb affinity for CO.

What is the minimum desaturated hemoglobin concentration in the capillaries when most observers perceive cyanosis?

Which of the following levels of PO₂ is associated with sharp decreases in oxygen saturation and content?

What is the normal amount of oxygen extracted by the tissues for each 100 mL of blood?

What is the interpretation of a decrease in the C(a - $\bar{V}$ )O₂?

Which of the following terms describes the unoxygenated hemoglobin?

Which of the following is the conventionally accepted value for hemoglobin's oxygen-carrying capacity?

How many times the body tissues' resting requirement is oxygen delivery?

Which of the following factors affect oxygen delivery to the tissues? I.Hemoglobin concentration II.Arterial hemoglobin saturation with oxygen III.Cardiac output IV.PCO₂ level

What is the rationale behind using an FIO₂ of 1.0 to manage patients with acute CO poisoning?

The Airways and Alveoli

The Lungs and Chest Wall

Mechanics of Ventilation

Ventilation

Pulmonary Function Measurements

Pulmonary Blood Flow

Gas Diffusion

Carbon Dioxide Equilibrium and Transport

Acid-Base Regulation

Control of Ventilation

Ventilation-Perfusion Relationships

Clinical Assessment of Acid-Base and Oxygenation Status

Physiological Basis for Oxygenation and Lung Protection Strategies

Physiology of Sleep Disordered Breathing

Fetal and Newborn Cardiopulmonary Physiology

Functional Anatomy of the Cardiovascular System

Cardiac Electrophysiology

The Electrocardiogram and Cardiac Arrhythmias In Adults

Control of Cardiac Output and Hemodynamic

Filtration, Urine Formation, and Fluid Regulation

Electrolyte and Acid-Base Regulation

Cardiopulmonary Response to Exercise in Health and Disease

Aging and the Cardiopulmonary System

Filters

Exam 8: Oxygen Equilibrium and Transport

What is the minimum desaturated hemoglobin concentration in the capillaries when most observers perceive cyanosis?

Which of the following levels of PO2 is associated with sharp decreases in oxygen saturation and content?

What is the normal amount of oxygen extracted by the tissues for each 100 mL of blood?

What is the interpretation of a decrease in the C(a - Vˉ \bar{V} Vˉ )O2?

Which of the following terms describes the unoxygenated hemoglobin?

Which of the following is the conventionally accepted value for hemoglobin's oxygen-carrying capacity?

How many times the body tissues' resting requirement is oxygen delivery?

Which of the following factors affect oxygen delivery to the tissues? I.Hemoglobin concentration II.Arterial hemoglobin saturation with oxygen III.Cardiac output IV.PCO2 level

What is the rationale behind using an FIO2 of 1.0 to manage patients with acute CO poisoning?

The Airways and Alveoli

The Lungs and Chest Wall

Mechanics of Ventilation

Ventilation

Pulmonary Function Measurements

Pulmonary Blood Flow

Gas Diffusion

Carbon Dioxide Equilibrium and Transport

Acid-Base Regulation

Control of Ventilation

Ventilation-Perfusion Relationships

Clinical Assessment of Acid-Base and Oxygenation Status

Physiological Basis for Oxygenation and Lung Protection Strategies

Physiology of Sleep Disordered Breathing

Fetal and Newborn Cardiopulmonary Physiology

Functional Anatomy of the Cardiovascular System

Cardiac Electrophysiology

The Electrocardiogram and Cardiac Arrhythmias In Adults

Control of Cardiac Output and Hemodynamic

Filtration, Urine Formation, and Fluid Regulation

Electrolyte and Acid-Base Regulation

Cardiopulmonary Response to Exercise in Health and Disease

Aging and the Cardiopulmonary System

Filters

Which of the following levels of PO₂ is associated with sharp decreases in oxygen saturation and content?

What is the interpretation of a decrease in the C(a - $\bar{V}$ )O₂?

Which of the following factors affect oxygen delivery to the tissues? I.Hemoglobin concentration II.Arterial hemoglobin saturation with oxygen III.Cardiac output IV.PCO₂ level

What is the rationale behind using an FIO₂ of 1.0 to manage patients with acute CO poisoning?