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NEMO 22 > SUMC > Flashcards

SUMC Flashcards

1
Q

Describe Boyles Law?

A

Pressure + Volume Vary Inversely [Temp Constant]

P1V1 = P2V2

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2
Q

Describe Charles’ Law?

A

Volume + Temperature Vary Directly [Pressure Constant]

V1/T1 = V2/T2

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3
Q

Describe Gay-Lussac’s Law?

A

Pressure + Temperature Vary Directly [Volume Constant]

P1/T1 = P2/T2

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4
Q

Describe Dalton’s Law?

A

Total Pressure = Sum Of All Partial Pressures

PTotal = P1 + P2 + Px

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5
Q

Describe Henry’s Law?

A

Solubility Of Gas Varies Directly With Pressure + Varies Inversely With Temperature

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6
Q

What Is Decompression Illness [DCI]?

A

Evolved Gas Disease

[Incorporates DCS + Barotrauma]

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7
Q

Define Absolute Pressure?

A

Gauge Pressure + Atmospheric Pressure

Depth [Meters] + 10 / 10

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8
Q

What Happens To Light As You Dive?

A

Light Wavelengths Blocked

Red = 1st
Blue = Last

[ROYGBIV]

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9
Q

Injuries Associated With Descent?

A

[HONE]

High Pressure Neuro Syndrome
Oxygen Toxicity
Nitrogen Narcosis
Ear Barotrauma

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10
Q

Injuries Associated With Ascent?

A

[PADS]

Pulmonary Over Inflation Syndrome
Arterial Gas Embolism
Decompression Illness [DCI]
Skin Squeeze

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11
Q

Pros/Cons Of Oxygen?

A

Pro: Required To Breath

Cons: ^ = Toxicity [CNS = >1.7ata + Pulm = 0.5ata]
v = Hypoxia

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12
Q

Pros/Cons Of Nitrogen?

A

Pros: Inert Gas

Cons: ^ = Narcosis + DCI

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13
Q

Pros/Cons Of Carbon Dioxide?

A

Pros: Breathing Reflex

Cons: ^ = Dizzyness/SOB
v = Shallow Water Blackout [Loss Of Reflex]

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14
Q

Pros/Cons Of Helium?

A

Pro: Inert Gas

Cons: ^ = Hypothermia + Narcosis + HPNS

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15
Q

Benefits Of Nitrox?

A

Longer Duration Of Dive

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16
Q

Benefits Of 100% Oxygen?

A

No Decompression Required

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17
Q

Describe Haldane Principle?

A

Elimination Of Gas Occurs Exponentially @ Ratio 2:1

18
Q

Symptoms Of Decompression Illness?

A

[MR LSC]

MSK = Joint Pain
Resp = The Chokes
Lymphatic = Peu d’Orange
Skin = Rash
CNS = Ataxia + Parasthesia + Visual Disturbances
19
Q

Management Of Decompression Illness?

A

Hyperbaric Chamber

20
Q

Types Of Tables For Hyperbaric Chamber?

A

Table 61 = Missed Deco [~5min To Enter - RARE]
Table 62 = Short Decompression
Table 67 = Long Decompression

21
Q

Describe SCUBA?

A

Self Contained Underwater Breathing
< 30m
Compressed Air

22
Q

Describe Saturation Diving?

A

Trimix
Based Below 50m
Decompress Post Job

23
Q

What Depth Does HPNS Occur At?

A

150m

24
Q

Describe Guidelines For Recreational Diving?

A

BSAC + Self Report

25
Q

Describe Guidelines For Commercial Diving?

A

MA 1

26
Q

Describe Guidelines For Military Diving?

A

Br 1750a Chapter 12

JSP 950

27
Q

Most Common Diving Injury?

A

ENT Barotrauma

28
Q

Most Severe Diving Injury?

A

Arterial Gas Embolism

29
Q

As Diver Ascends, What Law Dictates Gas Will Expand?

A

Boyles Law

30
Q

As Diver Descends, What Law Dictates Partial Pressures Will Increase?

A

Dalton’s Law

31
Q

Can Diver Continue With History Of Pneumothorax?

A 
Spontaneous = NO
Traumatic = YES [BUT NEEDS SMO[DM] REVIEW]
32
Q

Symptoms Of CNS Oxygen Toxicity?

A 
[VENTID C]
Vision Change
Ear Tinnitus
Nausea
Tingling
Irritation
Dizzyness
Convulsions
33
Q

What Does Nitrox 36 Mean?

A

36% Oxygen

64% Nitrogen

34
Q

Atmospheric Pressure @ Surface?

A

1 ata

35
Q

Can You Sign Off Diver For Military Recreational Diving In Free Time?

A

No

Can Only Sign Off For Diving @ Work

36
Q

What Effect Causes Decompression Illness?

A

Bubble Effect

37
Q

Describe Bubble Effect?

A 
Increased Depth > Increased Partial Pressures
[Daltons Law]
Increased Partial Pressures > Increased Saturation Of Tissues
[Henry’s Law]
Increased Saturation > Super Saturation
Ascent > Bubble Formation
[Henry’s Law]
Ascent > Larger Bubbles
[Boyles Law]
38
Q

Differentiate Between Outer/Middle/Inner Ear Barotrauma?

A 
Outer = Hood Squeeze + Descent
Middle = Reverse Squeeze [Tympanic Membrane] + Ascent/Descent
Inner = Oval/Round Window Rupture + Descent + ENDEX
39
Q

No Fly/Dive Time For Missed Decompression?

A

Fly = 24hrs

Dive = 48hrs

40
Q

No Fly/Dive Time For DCI 1?

A

Fly = 72hrs

Dive = 7 Days

41
Q

No Fly/Dive Time For DCI 2?

A

Fly = 72hrs [Table 62] OR ~6 Weeks [Unresolved]

Dive = 28 Days OR ~SMO[DM] [Unresolved]

NEMO 22 (4 decks)

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