Question 1

Which of the following statements is NOT true about the effect of / imbalances on oxygen and carbon dioxide exchange?

Accepted Answer

A) Blood leaving high $\dot { V }$ / $\dot { Q }$ units has a high PO2 and a low PCO2. 
B) Blood leaving low $\dot { V }$ / $\dot { Q }$ units has a low PO2 and a high PCO2. 
C) High $\dot { V }$ / $\dot { Q }$ units can compensate for high PCO2 levels from low $\dot { V }$ / $\dot { Q }$ units. 
D) High $\dot { V }$ / $\dot { Q }$ units can compensate for low PO2 levels from low $\dot { V }$ / $\dot { Q }$ units. 
A) Blood leaving high $\dot { V }$ / $\dot { Q }$ units has a high PO2 and a low PCO2. 
B) Blood leaving low $\dot { V }$ / $\dot { Q }$ units has a low PO2 and a high PCO2. 
C) High $\dot { V }$ / $\dot { Q }$ units can compensate for high PCO2 levels from low $\dot { V }$ / $\dot { Q }$ units. 
D) High $\dot { V }$ / $\dot { Q }$ units can compensate for low PO2 levels from low $\dot { V }$ / $\dot { Q }$ units.

Question 2

When a Hb molecule accumulates excessive amounts of HCO3-, it is expelled from the cell in exchange for Cl-. What is this called?

Accepted Answer

A) Bohr effect 
B) Haldane effect 
C) Hamburger phenomenon 
D) hydrolysis phenomenon 
A) Bohr effect 
B) Haldane effect 
C) Hamburger phenomenon 
D) hydrolysis phenomenon

Question 3

The expected PaO2 for an 80-year-old man who is otherwise in good health and breathing room air is about what level?

Accepted Answer

A) 50 mm Hg 
B) 75 mm Hg 
C) 80 mm Hg 
D) 90 mm Hg 
A) 50 mm Hg 
B) 75 mm Hg 
C) 80 mm Hg 
D) 90 mm Hg

Question 4

As the amount of oxygen that dissolves in the plasma increases, what is it directly proportional to?

Accepted Answer

A) its partial pressure 
B) its solubility coefficient 
C) minute ventilation 
D) temperature 
A) its partial pressure 
B) its solubility coefficient 
C) minute ventilation 
D) temperature

Question 5

Compared to normal levels, a shift in the HbO2 curve to the right has which of the following effects?
I .The affinity of Hb for oxygen decreases.
II.The Hb saturation for a given PO2 falls.
III.The Hb saturation for a given PO2 rises.

Accepted Answer

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

Exam 11: Gas Exchange and Transport

Which of the following statements is NOT true about the effect of / imbalances on oxygen and carbon dioxide exchange?

When a Hb molecule accumulates excessive amounts of HCO3-, it is expelled from the cell in exchange for Cl-. What is this called?

The expected PaO2 for an 80-year-old man who is otherwise in good health and breathing room air is about what level?

As the amount of oxygen that dissolves in the plasma increases, what is it directly proportional to?

Compared to normal levels, a shift in the HbO2 curve to the right has which of the following effects? I .The affinity of Hb for oxygen decreases. II.The Hb saturation for a given PO2 falls. III.The Hb saturation for a given PO2 rises.

History of Respiratory Care

Quality and Evidence-Based Respiratory Care

Patient Safety, Communication, and Record Keeping

Principles of Infection Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

Computer Applications in Respiratory Care

The Respiratory System

The Cardiovascular System

Ventilation

Solutions, Body Fluids, and Electrolytes

Acid-Base Balance

Regulation of Breathing

Bedside Assessment of the Patient

Interpretation of Clinical Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

Pulmonary Function Testing

A Review of Thoracic Imaging

Nutrition Assessment

Pulmonary Infections

Obstructive Lung Disease: Copd, Asthma, and Related Diseases

Interstitial Lung Disease

Pleural Diseases

Pulmonary Vascular Disease

Acute Lung Injury, Pulmonary Edema, and Multiple System Organ

Lung Cancer

Neuromuscular and Other Diseases of the Chest Wall

Disorders of Sleep

Neonatal and Pediatric Respiratory Disorders

Airway Pharmacology

Airway Management

Emergency Cardiovascular Life Support

Humidity and Bland Aerosol Therapy

Aerosol Drug Therapy

Storage and Delivery of Medical Gases

Medical Gas Therapy

Lung Expansion Therapy

Bronchial Hygiene Therapy

Respiratory Failure and the Need for Ventilatory Support

Mechanical Ventilators

Physiology of Ventilatory Support

Initiating and Adjusting Ventilatory Support

Noninvasive Positive Pressure Ventilation

Monitoring and Management of the Patient in the Intensive Care Unit

Discontinuing Ventilatory Support

Neonatal and Pediatric Respiratory Care

Patient Education and Health Promotion

Cardiopulmonary Rehabilitation

Respiratory Care in Alternative Settings

Filters

When a Hb molecule accumulates excessive amounts of HCO₃^-, it is expelled from the cell in exchange for Cl^-. What is this called?

The expected PaO₂ for an 80-year-old man who is otherwise in good health and breathing room air is about what level?

Compared to normal levels, a shift in the HbO₂ curve to the right has which of the following effects? I .The affinity of Hb for oxygen decreases. II.The Hb saturation for a given PO₂ falls. III.The Hb saturation for a given PO₂ rises.