SSI Open Water Chapter 3 Quiz

The proper first aid for Arterial Gas embolism, Subcutaneous emphysema, Pneumothorax, and Mediastinal Emphysema is:

• Seek proper medical aid (a recompression chamber) as quickly as possible

• Administer oxygen (if qualified)

• Watch Vital signs, treat for shock and stand by to administer cardio-pulmonary resuscitation (if qualified)

• All answers are correct

Which of the following overexpansion injuries can be characterized by swelling in the neck area with a crackling sensation upon touching the swollen area?

• Subcutaneous emphysema

• Pneumothorax

• Arterial Gas Embolism

• Mediastinal emphysema

Decompression sickness occurs when:

• Excess nitrogen bubbles out of solution into the blood and tissues

• A diver stays at depth too long and surfaces too quickly

• The nitrogen tissue tolerance gradient is exceeded

• All answers are correct

Other symptoms of decompression sickness include:

• Itchy skin

• Paralysis and loss of manual dexterity

• Numbness

• All answers are correct

The best prevention for decompression sickness is to:

• Dive with a buddy that has a computer

• Never hold your breath

• Never dive below 100 feet

• Plan your dive and dive your plan

If a flexible air-filled container at 100 feet of sea water has a volume of 10 cu ft, what would be the volume if it were transported to the surface?

• 30 cu ft

• 20 cu ft

• 15 cu ft

• 40 cu ft

The term gradient can be described as:

• The total pressure of all gases

• Total tissue saturation

• As always zero when the diver is super-saturated

• The difference between the internal partial pressure and the external partial pressure of a gas

Which of the following overexpansion injuries can be characterized by swelling in the neck area with a crackling sensation upon touching the swollen area?

• Arterial Gas Embolism

• Mediastinal emphysema

• Pneumothorax

• Subcutaneous emphysema

Overexpansion injuries can be prevented by:

• Learning the correct breathing patterns reinforced in classroom, pool, and open water training

• Dive with a properly maintained high-quality Total Diving System

• Never holding your breath while diving

• All answers are correct

The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of the:

• Blood vessels

• Bronchiole trees

• Alveoli

• Arteries