Question 1

What is the half-life of carboxyhemoglobin (HbCO) for the patient in a hyperbaric chamber breathing 100% oxygen at 3 atmospheres?

Accepted Answer

A)  20-30 minutes
B)  60-90 minutes
C)  100-150 minutes
D)  Depends on lung status of the victimE) B) and C)
F) None of the above

Question 2

About how many people die each year in the United States due to fire injuries?

Accepted Answer

A)  1,000
B)  4,000
C)  10,000
D)  15,000E) A) and C)
F) A) and B)

Question 3

The affinity of carbon monoxide (CO) for hemoglobin is how many times greater than the affinity of oxygen for hemoglobin?

Accepted Answer

A)  100
B)  200
C)  350-400
D)  800E) A) and B)
F) A) and C)

Question 4

Delayed neuropsychological sequelae of carbon monoxide poisoning include all of the following except:

Accepted Answer

A)  Movement disorders
B)  Cognitive deficits
C)  Arrhythmias
D)  Personality changesE) All of the above
F) A) and B)

Question 5

Which of the following is appropriate treatment to relieve the compressive effect of circumferential burns to the thorax?

Accepted Answer

A)  Silvadene applied topically
B)  Diuretics
C)  Escharatomy
D)  Closed chest drainageE) A) and D)
F) A) and C) C

Question 6

What accounts for reduced cardiac output in burn patients?

Accepted Answer

A)  Decreased circulating blood volume
B)  Sympathetic nervous system stimulation
C)  Kidney failure
D)  All the aboveE) A) and B)
F) B) and C) A

Question 7

Which of the following is NOT a cause of increased mortality among burn victims?

Accepted Answer

A)  Greater total body surface (TBS
A)  involvement
B)  Women ages 30 to 55
C)  Significant smoke inhalation
D)  None of the aboveE) None of the above
F) C) and D) D

Question 8

Which of the following factors plays a key role in determining the severity of injury in a fire victim?

Accepted Answer

A)  Preexisting health status of the victim
B)  Heat level of the inhaled gases
C)  Depth of skin burns
D)  All the aboveE) A) and B)
F) All of the above

Question 9

Which of the following is the method of choice for treating COHb levels of less than 30% with cardiovascular stability?

Accepted Answer

A)  Hyperbaric oxygen at 3 atm with 100% O2 for 30-60 minutes
B)  Tight-fitting non-rebreathing mask at 15 L/min
C)  Answer A is optimal,but answer B is acceptable
D)  Low flow O2 at 6 L/minE) A) and C)
F) B) and C)

Question 10

Inhaled hydrogen cyanide (HCN) binds enzymes in what part of the cell?

Accepted Answer

A)  Nucleus
B)  Cytoplasm
C)  Membrane
D)  MitochondriaE) A) and B)
F) A) and C)

Question 11

Most burn patients become colonized with which of these bacteria within a week of admission?

Accepted Answer

A)  Serratia marscescens
B)  Bacillus cereus
C)  Staphylococcus aureus
D)  Eikenella corrodensE) All of the above
F) A) and B)

Question 12

What is the expected level of carboxyhemoglobin (HbCO) in the blood of nonsmokers?

Accepted Answer

A)  
B)  3-5%
C)  7-10%
D)  15%E) None of the above
F) A) and B)

Question 13

What poisonous gas is emitted when products made of nylon burn?

Accepted Answer

A)  Hydrogen sulfite
B)  Hydrogen cyanide
C)  Chlorine
D)  Sodium sulfateE) C) and D)
F) A) and B)

Question 14

A 40-year-old patient was found unconscious in a running vehicle parked in a garage.Burns to the neck appear to have come from the cigarette he had been smoking.Arterial blood gases are as follows: pH = 7.36
PaCO2 = 46
PaO2 = 90
HCO3 = 24
BE = 0
Regarding oxygen administration,which is the most appropriate device?

Accepted Answer

A)  No oxygen necessary
B)  Cannula at 6 L/min
C)  Face tent with cool humidity at 40%
D)  100% non-rebreathing mask at 10 L/minE) B) and D)
F) None of the above

Question 15

Which of the following is advised for the prevention of infection in the burn patient?

Accepted Answer

A)  Wound covering
B)  Room pressurization
C)  Air filtration
D)  All the aboveE) B) and D)
F) B) and C)

Question 16

Why should the pulse oximeter not be used to assess HbO2 concentration in carbon monoxide poisoning?

Accepted Answer

A)  O2 and CO have similar light-absorption spectra and thus give a falsely high value for HbO2
B)  Because of any methemoglobin that might be present
C)  Intravascular dyes for diagnostic purposes make the oximeter inaccurate
D)  Because CO prevents the oximeter from reading oxygenE) A) and C)
F) A) and D)

Question 17

Thermal injury to the respiratory tract is frequently confined to which of these?

Accepted Answer

A)  Airways 
B)  Face,nasal,and oral cavities,as well as trachea
C)  Respiratory bronchioles,alveolar ducts and sacs,alveoli
D)  LarynxE) B) and C)
F) A) and B)

Question 18

Your patient is more than 7 days post-burn.He develops tachypnea,increasing minute ventilation with marked decrease in the PaO2/FIO2 ratio and an increase in the P(a-ET) CO2.What is the most likely cause?

Accepted Answer

A)  Acute bronchitis
B)  Pulmonary embolism
C)  ARDS
D)  TracheitisE) A) and C)
F) All of the above

Question 19

Most burn injuries occur in what locale?

Accepted Answer

A)  The workplace
B)  Automotive accidents
C)  The home
D)  WildfiresE) B) and C)
F) A) and D)

Question 20

Which of the following is/are a potential mechanism for the ARDS that accompanies some burns?

Accepted Answer

A)  Surfactant dysfunction
B)  Increased capillary permeability
C)  Bacterial sepsis
D)  All the aboveE) A) and C)
F) B) and C)

Exam 9: Smoke Inhalation Injury and Burns

What is the half-life of carboxyhemoglobin (HbCO) for the patient in a hyperbaric chamber breathing 100% oxygen at 3 atmospheres?

Correct Answer
verified

About how many people die each year in the United States due to fire injuries?

Correct Answer
verified

The affinity of carbon monoxide (CO) for hemoglobin is how many times greater than the affinity of oxygen for hemoglobin?

Correct Answer
verified

Delayed neuropsychological sequelae of carbon monoxide poisoning include all of the following except:

Correct Answer
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Which of the following is appropriate treatment to relieve the compressive effect of circumferential burns to the thorax?

Correct Answer
verified
C

What accounts for reduced cardiac output in burn patients?

Correct Answer
verified
A

Which of the following is NOT a cause of increased mortality among burn victims?

Correct Answer
verified
D

Which of the following factors plays a key role in determining the severity of injury in a fire victim?

Correct Answer
verified

Which of the following is the method of choice for treating COHb levels of less than 30% with cardiovascular stability?

Correct Answer
verified

Inhaled hydrogen cyanide (HCN) binds enzymes in what part of the cell?

Correct Answer
verified

Most burn patients become colonized with which of these bacteria within a week of admission?

Correct Answer
verified

What is the expected level of carboxyhemoglobin (HbCO) in the blood of nonsmokers?

Correct Answer
verified

What poisonous gas is emitted when products made of nylon burn?

Correct Answer
verified

Correct Answer
verified

Which of the following is advised for the prevention of infection in the burn patient?

Correct Answer
verified

Why should the pulse oximeter not be used to assess HbO₂ concentration in carbon monoxide poisoning?

Correct Answer
verified

Thermal injury to the respiratory tract is frequently confined to which of these?

Correct Answer
verified

Your patient is more than 7 days post-burn.He develops tachypnea,increasing minute ventilation with marked decrease in the PaO₂/FIO₂ ratio and an increase in the P(a-ET) CO₂.What is the most likely cause?

Correct Answer
verified

Most burn injuries occur in what locale?

Correct Answer
verified

Which of the following is/are a potential mechanism for the ARDS that accompanies some burns?

Correct Answer
verified

Exam 9: Smoke Inhalation Injury and Burns

What is the half-life of carboxyhemoglobin (HbCO) for the patient in a hyperbaric chamber breathing 100% oxygen at 3 atmospheres?

Correct AnswerverifiedShow Answer

About how many people die each year in the United States due to fire injuries?

Correct AnswerverifiedShow Answer

The affinity of carbon monoxide (CO) for hemoglobin is how many times greater than the affinity of oxygen for hemoglobin?

Correct AnswerverifiedShow Answer

Delayed neuropsychological sequelae of carbon monoxide poisoning include all of the following except:

Correct AnswerverifiedShow Answer

Which of the following is appropriate treatment to relieve the compressive effect of circumferential burns to the thorax?

Correct AnswerverifiedC

What accounts for reduced cardiac output in burn patients?

Correct AnswerverifiedA

Which of the following is NOT a cause of increased mortality among burn victims?

Correct AnswerverifiedD

Which of the following factors plays a key role in determining the severity of injury in a fire victim?

Correct AnswerverifiedShow Answer

Which of the following is the method of choice for treating COHb levels of less than 30% with cardiovascular stability?

Correct AnswerverifiedShow Answer

Inhaled hydrogen cyanide (HCN) binds enzymes in what part of the cell?

Correct AnswerverifiedShow Answer

Most burn patients become colonized with which of these bacteria within a week of admission?

Correct AnswerverifiedShow Answer

What is the expected level of carboxyhemoglobin (HbCO) in the blood of nonsmokers?

Correct AnswerverifiedShow Answer

What poisonous gas is emitted when products made of nylon burn?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is advised for the prevention of infection in the burn patient?

Correct AnswerverifiedShow Answer

Why should the pulse oximeter not be used to assess HbO2 concentration in carbon monoxide poisoning?

Correct AnswerverifiedShow Answer

Thermal injury to the respiratory tract is frequently confined to which of these?

Correct AnswerverifiedShow Answer

Your patient is more than 7 days post-burn.He develops tachypnea,increasing minute ventilation with marked decrease in the PaO2/FIO2 ratio and an increase in the P(a-ET) CO2.What is the most likely cause?

Correct AnswerverifiedShow Answer

Most burn injuries occur in what locale?

Correct AnswerverifiedShow Answer

Which of the following is/are a potential mechanism for the ARDS that accompanies some burns?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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C

Correct Answer
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A

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D

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Why should the pulse oximeter not be used to assess HbO₂ concentration in carbon monoxide poisoning?

Correct Answer
verified

Correct Answer
verified

Your patient is more than 7 days post-burn.He develops tachypnea,increasing minute ventilation with marked decrease in the PaO₂/FIO₂ ratio and an increase in the P(a-ET) CO₂.What is the most likely cause?

Correct Answer
verified

Correct Answer
verified

Correct Answer
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