SSI OPEN WATER LATEST 2026 STUDY GUIDE
QUESTIONS AND ANSWERS MARKED A+
✔✔The only accepted treatment for Arterial Gas Embolism is: - ✔✔Stabilize the victim,
medical treatment, decompression chamber
✔✔Haldanes theory that the human body can withstand a 2:1 pressure difference was
revised by D Workman to a nitrogen ratio of: - ✔✔1.58 : 1
✔✔The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of
the: - ✔✔Alveoli
✔✔The most serious lung overexpansion injury is: - ✔✔Arterial gas embolism
✔✔Dalton's Law can be paraphrased as: - ✔✔The total pressure of a mixture of gases
equals the sum of the partial pressures
✔✔The proper first aid for Arterial Gas embolism, Subcutaneous emphysema,
Pneumothorax, and Mediastinal Emphysema is: - ✔✔Administer oxygen (if qualified)
Seek proper medical aid (recompression chamber)
Watch vital signs, treat for shock, administer CPR (if qualified)
✔✔Decompression sickness occurs when? - ✔✔Nitrogen tissue tolerance gradient is
exceeded
A diver stays at depth too long and surfaces too quickly
Excess nitrogen bubbles out of solution and into the blood and tissues
✔✔No decompression limit is defined as? - ✔✔Maximum time allowed at depth without
having to perform mandatory decompression stops during the ascent
✔✔Surface interval is defined as? - ✔✔The amount of time the diver spends out of the
water or on the surface between dives
✔✔To use a compass to navigate to a sighted object? - ✔✔Point the compass toward
the object, rotate the bezel until the witness marks are over the magnetic needle, and
follow the lubber line
✔✔T/F It is ok to share a dive computer with a buddy - ✔✔False
✔✔Dive computers are essential for planning and executing dives because they? -
✔✔Record all pertinent information
Help divers stay within no decompression limits
Monitor ascents and descents
QUESTIONS AND ANSWERS MARKED A+
✔✔The only accepted treatment for Arterial Gas Embolism is: - ✔✔Stabilize the victim,
medical treatment, decompression chamber
✔✔Haldanes theory that the human body can withstand a 2:1 pressure difference was
revised by D Workman to a nitrogen ratio of: - ✔✔1.58 : 1
✔✔The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of
the: - ✔✔Alveoli
✔✔The most serious lung overexpansion injury is: - ✔✔Arterial gas embolism
✔✔Dalton's Law can be paraphrased as: - ✔✔The total pressure of a mixture of gases
equals the sum of the partial pressures
✔✔The proper first aid for Arterial Gas embolism, Subcutaneous emphysema,
Pneumothorax, and Mediastinal Emphysema is: - ✔✔Administer oxygen (if qualified)
Seek proper medical aid (recompression chamber)
Watch vital signs, treat for shock, administer CPR (if qualified)
✔✔Decompression sickness occurs when? - ✔✔Nitrogen tissue tolerance gradient is
exceeded
A diver stays at depth too long and surfaces too quickly
Excess nitrogen bubbles out of solution and into the blood and tissues
✔✔No decompression limit is defined as? - ✔✔Maximum time allowed at depth without
having to perform mandatory decompression stops during the ascent
✔✔Surface interval is defined as? - ✔✔The amount of time the diver spends out of the
water or on the surface between dives
✔✔To use a compass to navigate to a sighted object? - ✔✔Point the compass toward
the object, rotate the bezel until the witness marks are over the magnetic needle, and
follow the lubber line
✔✔T/F It is ok to share a dive computer with a buddy - ✔✔False
✔✔Dive computers are essential for planning and executing dives because they? -
✔✔Record all pertinent information
Help divers stay within no decompression limits
Monitor ascents and descents
