ADP Chapter 4

Question 1

What factors contribute to DCS?

Answer 1

Ascent rate too rapid 
improper depth monitoring
Work load 
Improper timing of stops 
Cold 
dehydration

Question 2

What are the types of DCS?

Answer 2

Type 1 = pain only

Type 2 = CNS involvement

Question 3

What time scale do symptoms occur in?

Answer 3

42% = 1 hour 
60% = 3 hours 
83% = 8 hours 
98% = 24 hours

Question 4

What is type 1 DCS?

Answer 4

Joint and muscle pain, swelling or pain in lymph nodes, skin symptoms
Shoulder, elbow or wrist are common
Itching is common, then discolouration

Question 5

What is type 2 DCS?

Answer 5

Tired, weak, hearing problems, walking problems, difficulty urinating
Split into neurological and cardiorespiratory

Question 6

What is the ‘chokes’?

Answer 6

Difficulty breathing, painful inhalation and SOB

Question 7

5 minute neuro exam

Answer 7

Orientation - name, DOB, where they are
Eyes - H movement, pupils equal and responding to light 
Forehead = sensation and movement 
Face = movement 
Ears = check hearing
Gag reflex = get them to swallow 
Tongue = stick out 
Shoulders = shrug
Arms = squeeze fingers, test strength 
Chest = skin sensation 
Legs = strength 
Heel to toe = walk heel to toe for balance