NAUI Instructor Exam with precise detailed solutions ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Henry's Law - correct answer✔✔The amount of gas dissolved in a liquid is directly related
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to its partial pressure above the liquid.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Relationship of gas solubility and temperature - correct answer✔✔Solubility of gas ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
decreases with increasing temperature ||\\//|| ||\\//|| ||\\//||
(INVERSELY RELATED) ||\\//||
Inert gas loading in relation to body tissue - correct answer✔✔Body tissue absorbs more
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
inert gas as depth increases
||\\//|| ||\\//|| ||\\//|| ||\\//||
Benefit of Dive Computer compared to Dive Tables - correct answer✔✔Gives the diver
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
credit for shallow portions of the dive
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Cold or Strenuous dive planning rule - correct answer✔✔Use the next greater dive TIME to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
determine letter group
||\\//|| ||\\//|| ||\\//||
Equilibrium as it relates to nitrogen in the body - correct answer✔✔When the pressure of ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
nitrogen is balanced between air and your body ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Haldane surfacing ratio - correct answer✔✔Originally 2:1 - Updated with new research to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1.58:1
Tissue compartment half-time - correct answer✔✔The time required for the compartment
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to absorb or eliminate half of the pressure difference between what it started with and the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
ambient pressure ||\\//||
,M-Value of tissue - correct answer✔✔The maximum allowable nitrogen (inert gas) pressure ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in a specific tissue
||\\//|| ||\\//|| ||\\//|| ||\\//||
NAUI recommendation for diving while pregnant - correct answer✔✔Do not dive while
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
pregnant
Haldane tissue compartments - correct answer✔✔Haldane - 5 compartments ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Modern Computers - Apx. 16 compartments ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tissue compartment - correct answer✔✔Mathematical model consisting of multiple
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
theoretical tissues and their relative halftimes ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Fast compartments - short halftimes
||\\//|| ||\\//|| ||\\//|| ||\\//||
Slow compartments - long halftimes ||\\//|| ||\\//|| ||\\//|| ||\\//||
Ascent rate at altitude - correct answer✔✔Slower than at sea level ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Extend dive times with gas by - correct answer✔✔Decreased nitrogen and increased oxygen
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in breathing gas
||\\//|| ||\\//|| ||\\//||
RNT - correct answer✔✔Residual Nitrogen Time||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tme already spent at the repetitive dive depth (dive tables)
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Procedure for missed decompression stops - correct answer✔✔Remain out of the water, ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
rest, breathe 100% oxygen, drink fluids, be monitored for signs of decompression illness,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
transported to a hyperbaric facility if symptoms arise ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
SIT - correct answer✔✔Surface Interval Time
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, Longer time at the surface allows for increased repeat dive times
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Canadian Dive Tables published by the Defense and Civil Institute of Environmental ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Medicine (DCIEM) - correct answer✔✔Based on 20+ years of research pioneered by Kidd ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
and Stubbs (1962)
||\\//|| ||\\//||
Swiss Dive Tables - correct answer✔✔Developed by A.A. Bühlmann at the University of
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Zurich - EXTENDED TO INCLUDE ALTITUDE DIVING ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
If the time spent making a "precautionary stop" at 5 msw (15 fsw) causes your Total Dive
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Time to exceed the Dive Time Limits, you should: - correct answer✔✔Use the Maximum
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Dive Time as your Total Dive Time
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Aching pains an hour after a dive might be: - correct answer✔✔Decompression sickness
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
ATA rating for most hyperbaric chambers for treating divers: - correct answer✔✔6 ATA
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Haldane Tissue Half-Times (Compartments) - correct answer✔✔5, 10, 20, 40, 75 Mins ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
High altitude dive - correct answer✔✔Any dive at greater than 1000 feet
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Ideal hyperbaric chamber for dive injury - correct answer✔✔Multiplace, double-lock
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
chamber rated for service to six atmospheres ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Repetitive Dive - correct answer✔✔Any dive started within 24 hours after a previous dive ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
NAUI recommended minimum SIT time - correct answer✔✔60 mins
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Henry's Law - correct answer✔✔The amount of gas dissolved in a liquid is directly related
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to its partial pressure above the liquid.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Relationship of gas solubility and temperature - correct answer✔✔Solubility of gas ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
decreases with increasing temperature ||\\//|| ||\\//|| ||\\//||
(INVERSELY RELATED) ||\\//||
Inert gas loading in relation to body tissue - correct answer✔✔Body tissue absorbs more
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
inert gas as depth increases
||\\//|| ||\\//|| ||\\//|| ||\\//||
Benefit of Dive Computer compared to Dive Tables - correct answer✔✔Gives the diver
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
credit for shallow portions of the dive
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Cold or Strenuous dive planning rule - correct answer✔✔Use the next greater dive TIME to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
determine letter group
||\\//|| ||\\//|| ||\\//||
Equilibrium as it relates to nitrogen in the body - correct answer✔✔When the pressure of ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
nitrogen is balanced between air and your body ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Haldane surfacing ratio - correct answer✔✔Originally 2:1 - Updated with new research to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1.58:1
Tissue compartment half-time - correct answer✔✔The time required for the compartment
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to absorb or eliminate half of the pressure difference between what it started with and the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
ambient pressure ||\\//||
,M-Value of tissue - correct answer✔✔The maximum allowable nitrogen (inert gas) pressure ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in a specific tissue
||\\//|| ||\\//|| ||\\//|| ||\\//||
NAUI recommendation for diving while pregnant - correct answer✔✔Do not dive while
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
pregnant
Haldane tissue compartments - correct answer✔✔Haldane - 5 compartments ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Modern Computers - Apx. 16 compartments ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tissue compartment - correct answer✔✔Mathematical model consisting of multiple
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
theoretical tissues and their relative halftimes ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Fast compartments - short halftimes
||\\//|| ||\\//|| ||\\//|| ||\\//||
Slow compartments - long halftimes ||\\//|| ||\\//|| ||\\//|| ||\\//||
Ascent rate at altitude - correct answer✔✔Slower than at sea level ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Extend dive times with gas by - correct answer✔✔Decreased nitrogen and increased oxygen
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in breathing gas
||\\//|| ||\\//|| ||\\//||
RNT - correct answer✔✔Residual Nitrogen Time||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tme already spent at the repetitive dive depth (dive tables)
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Procedure for missed decompression stops - correct answer✔✔Remain out of the water, ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
rest, breathe 100% oxygen, drink fluids, be monitored for signs of decompression illness,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
transported to a hyperbaric facility if symptoms arise ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
SIT - correct answer✔✔Surface Interval Time
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, Longer time at the surface allows for increased repeat dive times
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Canadian Dive Tables published by the Defense and Civil Institute of Environmental ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Medicine (DCIEM) - correct answer✔✔Based on 20+ years of research pioneered by Kidd ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
and Stubbs (1962)
||\\//|| ||\\//||
Swiss Dive Tables - correct answer✔✔Developed by A.A. Bühlmann at the University of
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Zurich - EXTENDED TO INCLUDE ALTITUDE DIVING ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
If the time spent making a "precautionary stop" at 5 msw (15 fsw) causes your Total Dive
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Time to exceed the Dive Time Limits, you should: - correct answer✔✔Use the Maximum
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Dive Time as your Total Dive Time
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Aching pains an hour after a dive might be: - correct answer✔✔Decompression sickness
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
ATA rating for most hyperbaric chambers for treating divers: - correct answer✔✔6 ATA
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Haldane Tissue Half-Times (Compartments) - correct answer✔✔5, 10, 20, 40, 75 Mins ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
High altitude dive - correct answer✔✔Any dive at greater than 1000 feet
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Ideal hyperbaric chamber for dive injury - correct answer✔✔Multiplace, double-lock
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
chamber rated for service to six atmospheres ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Repetitive Dive - correct answer✔✔Any dive started within 24 hours after a previous dive ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
NAUI recommended minimum SIT time - correct answer✔✔60 mins
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
