Ch. 41

Question 1

Soon after being placed in a cool environment, the body will respond by:

A) inhibiting conduction through piloerection.
B) inducing thermogenesis to increase heat production.
C) inducing thermolysis to release heat.
D) increasing ambient temperature to decrease the thermal gradient.

Answer 1

B) inducing thermogenesis to increase heat production.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 2

Heat flowing from a surface of greater temperature to one of lesser temperature via direct contact BEST explains the concept of:

A) radiation.
B) convection.
C) conduction.
D) evaporation.

Answer 2

C) conduction.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 3

Convection causes the body to lose heat by:

A) direct contact with another surface.
B) transferring heat to moving air molecules.
C) radiation of heat to the environment.
D) evaporation of moisture from the skin.

Answer 3

B) transferring heat to moving air molecules.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 4

The body’s attempt at maintaining a core temperature is known as:

A) compensation.
B) metabolism.
C) aerobic metabolism.
D) thermoregulation.

Answer 4

D) thermoregulation.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 5

If heat exhaustion is NOT treated, the patient is at risk for:

A) pulmonary edema.
B) respiratory distress.
C) heatstroke.
D) heat cramps.

Answer 5

C) heatstroke.

Page Ref: 912
Objective: 41.1 Define key terms introduced in this chapter; 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries.

Question 6

During immersion in cold water, heat loss will MOST likely occur as a result of:

A) conduction.
B) convection.
C) radiation.
D) evaporation.

Answer 6

A) conduction.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 7

An environmental emergency is an emergency involving any of the following EXCEPT:

A) submersion in water.
B) temperature.
C) atmospheric pressure.
D) trauma.

Answer 7

D) trauma.

Page Ref: 908
Objective: 41.2 Explain actions you should take to protect your own safety when responding to environmental emergencies; 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries.

Question 8

Shivering is a mechanism in which:

A) metabolic activity decreases in order to create heat.
B) physical activity increases, generating heat.
C) the muscle cells lose their ability to compensate for heat loss.
D) blood shunts from the muscles, generating heat.

Answer 8

B) physical activity increases, generating heat.

Page Ref: 908
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 9

Heatstroke results in:

A) an abnormally high core temperature.
B) shivering to release heat.
C) thermogenesis.
D) vasoconstriction.

Answer 9

A) an abnormally high core temperature.

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 10

Classic heatstroke is a result of:

A) exposure to excessive heat.
B) cardiac arrest.
C) hyperglycemia.
D) heat cramps.

Answer 10

A) exposure to excessive heat.

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 11

Heat-related injury may manifest itself as any of the following EXCEPT:

A) heatstroke.
B) heat cramps.
C) heat exhaustion.
D) perspiration.

Answer 11

D) perspiration.

Page Ref: 911
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 12

Treatment of heat cramps should include:

A) deep muscle massage.
B) oral electrolytes such as non-caffeinated sports drinks.
C) rapid infusion of cooled IV fluids.
D) very cold water provided orally until the patient feels better.

Answer 12

B) oral electrolytes such as non-caffeinated sports drinks.

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 13

If transport time is extended for a patient who has severe deep frostbite to an extremity, it is BEST to attempt warming by:

A) vigorously massaging the affected areas to promote circulation.
B) immersing the affected areas in water that is approximately 102-104 degrees F.
C) administering vasopressors to promote circulation.
D) rubbing the affected areas gently.

Answer 13

B) immersing the affected areas in water that is approximately 102-104 degrees F.

Page Ref: 915
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 14

A 42-year-old construction worker faints while mixing cement. The patient presents as warm and diaphoretic, with rapid and shallow respirations. He responds to verbal stimuli and complains of being extremely weak. Management should consist of:

A) encouraging the patient to drink iced tea.
B) removing the patient from the hot environment.
C) administering an IV of D5W.
D) giving the patient salt tablets.

Answer 14

B) removing the patient from the hot environment.

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 15

With a core temperature of 28°C (82.4°F) a patient will display all of the following signs or symptoms EXCEPT:

A) loss of consciousness.
B) decline in oxygen consumption and pulse.
C) increased muscle rigidity.
D) marked bradypnea.

Answer 15

C) increased muscle rigidity.

Page Ref: 914
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 16

Your patient is standing outside where the ambient temperature is 100 degrees F. Due to the thermal gradient, you would expect:

A) heat transfer from the patient to the environment.
B) heat transfer from the environment to the patient.
C) heat exchange from the patient by conduction.
D) heat loss to occur quickly.

Answer 16

B) heat transfer from the environment to the patient.

Page Ref: 908
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 17

Associated factors in determining the rate of heat exchange in the environment include:

A) ambient temperature of the body.
B) humidity and wind.
C) percentage of carbon dioxide in the atmosphere.
D) carbon emissions from vehicles.

Answer 17

B) humidity and wind.

Page Ref: 908-909
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 18

When the core temperature is greater than that of the surrounding environment, the body will:

A) lose heat (thermolysis).
B) elevate the core temperature (thermogenesis).
C) increase the basal metabolic rate.
D) utilize the thermal gradient to exchange heat from the atmosphere to the body.

Answer 18

A) lose heat (thermolysis).

Page Ref: 908
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 19

When air enters the body through the nose and mouth and travels through the airway into the lungs, it is:

A) conducted as heat to the surrounding tissues.
B) compressed and pressurized.
C) cooled and dried.
D) warmed and humidified.

Answer 19

D) warmed and humidified.

Page Ref: 909
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 20

If the temperature regulating functions of the ________ are NOT working, the result is an abnormally high or low temperature.

A) hypothalamus
B) adrenal glands
C) kidneys
D) pancreas

Answer 20

A) hypothalamus

Page Ref: 908
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 21

There are sensors throughout the surface of the skin known as:

A) chemoreceptors.
B) peripheral thermoreceptors.
C) baroreceptors.
D) central thermoreceptors.

Answer 21

B) peripheral thermoreceptors.

Page Ref: 908
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat.

Question 22

The primary mechanisms for thermolysis are:

A) vasoconstriction and shivering.
B) vasodilation and sweating.
C) vasodilation and shivering.
D) shivering and sweating.

Answer 22

B) vasodilation and sweating.

Page Ref: 911
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 23

Core body temperature in a patient suffering from heatstroke will usually be greater than:

A) 104°F.
B) 102°F.
C) 107°F.
D) 100°F.

Answer 23

A) 104°F.

Page Ref: 912
Objective: 41.4 Explain the process of thermoregulation, including mechanisms by which the body gains and loses heat; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 24

Patients with preexisting conditions such as diabetes:

A) are unable to remove themselves from an unsuitable environment.
B) cannot tolerate any length of exposure to unsuitable conditions.
C) experience higher or lower ambient temperatures.
D) lose the efficiency of their autonomic nervous system.

Answer 24

D) lose the efficiency of their autonomic nervous system.

Page Ref: 910
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 25

You are treating a construction worker who has been assembling large, iron girders with a torch. It is very warm where you are treating the patient. Suddenly, he experiences a severe cramp to his shoulder region. This has probably occurred because the patient:

A) may have dislocated his shoulder during the activity.
B) lost both water and electrolytes in his sweat.
C) is probably not strong enough to maneuver the iron girders.
D) was not sweating enough to keep him cool.

Answer 25

B) lost both water and electrolytes in his sweat.

Page Ref: 911-912
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 26

You are called to a football game for a 15-year-old boy who is lying on the field, conscious and alert. It is August, and the patient is complaining of weakness and cramping to his abdomen. He is breathing well, his skin color is normal, and his skin is warm and moist to touch. Vital signs are normal. Treatment should include:

A) rapid cooling with ice packs to major pulse sites.
B) rapid fluid infusion of NaCl 0.9 percent to replace lost sodium.
C) administering an oral electrolyte replacement fluid.
D) high-flow oxygen and aggressive fluid replacement.

Answer 26

C) administering an oral electrolyte replacement fluid.

Page Ref: 911-912
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 27

You find an elderly patient who is unconscious and appears in poor condition. The patient was last seen three days ago. The house is hot because the area has been experiencing a heat wave with temperatures in excess of 100 degrees for the past two weeks. The patient is hot, dry, and breathing deeply and rapidly. Pulses are present and are full and bounding. Your immediate attention should be directed to:

A) immediate cooling to reduce body core temperature.
B) gentle cooling to avoid hypothermia.
C) insertion of a supraglottic airway.
D) cooling the patient to induce shivering.

Answer 27

A) immediate cooling to reduce body core temperature.

Page Ref: 912-913
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 28

The patient with hypothermia should be transported:

A) in Trendelenburg positioning.
B) with the head and shoulders elevated to 45-degrees.
C) rapidly to a Level III trauma facility.
D) with gentle handling to prevent ventricular fibrillation from occurring.

Answer 28

D) with gentle handling to prevent ventricular fibrillation from occurring.

Page Ref: 915
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 29

You have encountered a patient who is approximately one mile from the road where you parked your ambulance. The patient was cross-country skiing, became disoriented in the dark, and has been in a crude shelter all night. Examination reveals a moderately hypothermic patient who is alert and oriented. His feet are white and hard to palpation with decreased sensation. All of the following are true EXCEPT:

A) Hypothermia is a true concern, and warming should begin immediately.
B) Prior to walking the patient to the ambulance, you should attempt to rewarm the feet.
C) When warming the patient’s feet, you should immerse them in warm water and avoid rubbing.
D) Transport should be to a facility that can provide active internal and external rewarming.

Answer 29

B) Prior to walking the patient to the ambulance, you should attempt to rewarm the feet.

Page Ref: 915
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 30

A young man has been struck by lightning on a golf course and is in cardiac arrest. Other golfers say that he was struck about 10 minutes ago. Which one of the following should you do immediately?

A) Ventilate 10 to 12 breaths per minute.
B) Start cardiopulmonary resuscitation.
C) Do a secondary assessment to locate the burn sites.
D) Attach the automated external defibrillator.

Answer 30

B) Start cardiopulmonary resuscitation.

Page Ref: 921-922
Objective: 41.6 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of lightning strike injuries.

Question 31

An intoxicated 24-year-old woman has been struck by lightning and is conscious but confused. Which one of the following assessment findings should the AEMT investigate FIRST?

A) Deformity to the left wrist
B) Irregular heart beat
C) Burns to both arms
D) Unequal pupils

Answer 31

B) Irregular heart beat

Page Ref: 921-922
Objective: 41.6 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of lightning strike injuries.

Question 32

A patient at a mountain ski resort presents to you with notable shortness of breath. She denies any past medical history and takes no medications. Your assessment reveals crackles to the bases of both lungs. After applying oxygen, you realize that the key to helping this patient improve is to:

A) remove to a lower altitude.
B) administer albuterol by a metered-dose inhaler.
C) place her in a supine position with legs elevated.
D) position her in a left lateral recumbent position.

Answer 32

A) remove to a lower altitude.

Page Ref: 920-921
Objective: 41.8 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of drowning

Question 33

A teenage boy has fallen beneath a frozen pond while ice skating. Bystanders report that the boy disappeared almost an hour ago. He is brought to you by rescue personnel and is apneic and pulseless. There is cyanosis centrally and the child is very rigid. Which of the following statements is MOST correct?

A) Advanced procedures should include larger doses of resuscitative medications.
B) Resuscitative efforts should begin and continue despite a long transport time to the hospital.
C) Resuscitation should be withheld due to the rigor indicating a futile resuscitation effort.
D) Rescuers should avoid active rewarming due to transport time and provide BLS only en route.

Answer 33

B) Resuscitative efforts should begin and continue despite a long transport time to the hospital.

Page Ref: 917
Objective: 41.9 Explain factors that affect the likelihood of survival from drowning; 41.10 Recognize additional mechanisms of injury and illness that are associated with drowning, such as trauma and hypothermia; 41.11 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of drowning.

Question 34

Which of the following is defined as “the difference between body and environmental temperatures”?

A) Thermogenesis
B) Thermolysis
C) Thermal gradient
D) Conduction

Answer 34

C) Thermal gradient

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter.

Question 35

Heat transfer from the body directly to the environment without physical contact is called:

A) convection.
B) conduction.
C) evaporation.
D) radiation.

Answer 35

D) radiation.

Page Ref: 908
Objective: 41.1 Define key terms introduced in this chapter.

Question 36

When the relative humidity is greater than 75 percent, which of the following would be a temperature where sunstroke, heat cramps, and heat exhaustion are possible?

A) 70°F-90°F
B) 75°F-90°F
C) 80°F-90°F
D) 90°F or more

Answer 36

D) 90°F or more

Page Ref: 910
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 37

What condition might the patient have who is exposed to high heat and humidity and exhibits symptoms of abdominal muscle cramps, weakness, and dizziness?

A) Heat exhaustion
B) Heat cramps
C) Heatstroke
D) Hyperthermia

Answer 37

B) Heat cramps

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 38

What environmental emergency may be present when a patient is exhibiting symptoms of weakness, headache, dizziness, and anxiety?

A) Heat exhaustion
B) Heat cramps
C) Heatstroke
D) Hyperthermia

Answer 38

A) Heat exhaustion

Page Ref: 912
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 39

Generalized hypothermia is a condition in which the core body temperature drops below:

A) 80 degrees F.
B) 85 degrees F.
C) 90 degrees F.
D) 95 degrees F.

Answer 39

D) 95 degrees F.

Page Ref: 913
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 40

Severe hypothermia occurs when the core body temperature is less than:

A) 80 degrees F.
B) 85 degrees F.
C) 90 degrees F.
D) 95 degrees F.

Answer 40

C) 90 degrees F.

Page Ref: 914
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 41

At the scene, you examine the patient and note the following symptoms: cold, waxy skin; puffy face; confusion; some muscle rigidity; and a slow heart rate. What condition might these symptoms indicate?

A) Heat exhaustion
B) Heatstroke
C) Mild hypothermia
D) Severe hypothermia

Answer 41

C) Mild hypothermia

Page Ref: 914
Objective: 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 42

When treating a patient for frostbite, which should be done on the scene if transport is delayed and the patient will not have to walk?

A) Massage the affected areas.
B) Immediately thaw the affected areas.
C) Cover the affected areas with dressings moistened with saline.
D) Administer analgesia and then allow the affected areas to thaw.

Answer 42

D) Administer analgesia and then allow the affected areas to thaw.

Page Ref: 917
Objective: 41.3 Describe the scene size-up, primary and secondary assessments, and management of environmental emergencies including deep-water diving injuries, high-altitude sickness, lightning strike, local cold injuries, drowning, and systemic heat and cold injuries; 41.5 Explain the risk factors, pathophysiology, signs, symptoms, assessment, and management of heat cramps, heat exhaustion, heatstroke (classical and exertional), local cold injury, and mild, moderate, and severe hypothermia.

Question 43

Which of the following refers to medical conditions resulting from changes in pressure?

A) Thermolysis
B) Nitrogen narcosis
C) Dysbarism
D) Barotrauma

Answer 43

C) Dysbarism

Page Ref: 918
Objective: 41.1 Define key terms introduced in this chapter.

Question 44

Which of the following laws states that the volume of a gas is inversely proportional to its pressure?

A) Boyle’s law
B) Charles’s law
C) Dalton’s law
D) Henry’s law

Answer 44

A) Boyle’s law

Page Ref: 918
Objective: 41.1 Define key terms introduced in this chapter.

Question 45

Which law supports the idea that gases expand equally as temperature increases?

A) Boyle’s law
B) Charles’s law
C) Dalton’s law
D) Henry’s law

Answer 45

B) Charles’s law

Page Ref: 918
Objective: 41.1 Define key terms introduced in this chapter.

Question 46

What condition occurs when air pressure in the hollow spaces of the body (such as the middle ear and sinuses) rises too high or drops too low?

A) Arterial gas embolism
B) Nitrogen narcosis
C) Decompression sickness
D) Barotrauma

Answer 46

D) Barotrauma

Page Ref: 919
Objective: 41.1 Define key terms introduced in this chapter.

Question 47

Which of the following diving conditions is also called the bends?

A) Arterial gas embolism
B) Nitrogen narcosis
C) Decompression sickness
D) Barotrauma

Answer 47

C) Decompression sickness

Page Ref: 919
Objective: 41.1 Define key terms introduced in this chapter.

Question 48

Which of the following diving conditions is also commonly called rapture of the deep?

A) Arterial gas embolism
B) Nitrogen narcosis
C) Decompression sickness
D) Barotrauma

Answer 48

B) Nitrogen narcosis

Page Ref: 920
Objective: 41.1 Define key terms introduced in this chapter.

Question 49

You are sent to a diving emergency and have a single victim complaining of acute dyspnea, altered mental status, dizziness, and chest pain. Upon arrival at the scene, you are told that the diver probably ascended too rapidly. What condition is most likely occurring?

A) Arterial gas embolism
B) Nitrogen narcosis
C) Decompression sickness
D) Barotrauma

Answer 49

A) Arterial gas embolism

Page Ref: 921
Objective: 41.1 Define key terms introduced in this chapter.