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Critical Care FP-C 2.0 > Flight Physiology > Flashcards

Flight Physiology Flashcards

1
Q

Boyle’s Law

A

Volume is inversely proportional to the pressure
-Think balloons
Pressure increases, volume decreases
Pressure decreases, volume increases

Cuffs, MAST, GI, ETT, IABP

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2
Q

Charles Law

A

Gas expands when heated

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3
Q

Gay Lussac’s Law

A

Volume directly proportional to its absolute temperature
-Every 1,000ft of altitude, temperature decrease 1C (330ft=1F)

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4
Q

Henry’s Law

A

Decompression sickness

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5
Q

Hypoxic Hypoxia

A

Inadequate ambient oxygen
Common in flight (altitude hypoxia)

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6
Q

Hypemic Hypoxia

A

Reduced capacity of blood to carry oxygen

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7
Q

Stagnant Hypoxia

A

Inadequate blood flow causes insufficient tissue oxygenation
-Shock

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8
Q

Histotoxic Hypoxia

A

Cell unable to use oxygen
-Cyanide and CO poisoning

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9
Q

Stages of Hypoxia

A

Indifferent (90-98%)
Compensatory (80-89%)
Disturbance (70-79%)
Critical (60-69%)

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10
Q

Supplemental Oxygen must be worn by pilot

A

> 12,500 MSL for >30 minutes
14,000 MSL for “required minimum flight crew”
15,000 MSL must be worn by everyone on board (or must be pressurized)

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11
Q

Time of useful Consciousness (TUC)

A

Slow loss of pressure at 30,000ft: 90 secs
Rapid depressure at 30,000ft: 45 secs

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12
Q

Rotor-wing pilot required hours

A

2000 hours
1000 PIC
100 hours at night

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13
Q

“Bottle to throttle” time

A

At least 8 hours

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14
Q

Rules of flight

A
  • Sterile cockpit during critical phases of flight
  • 15 minutes max between communication center during flight
  • 45 minutes max while on ground
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15
Q

Rotor-wing shut off sequence

A

“TFB”
Throttle
Fuel
Battery

Meet at 12 o’clock position

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16
Q

Survival sequence

A

Shelter
Fire
Water
Food

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17
Q

FARS

A

Part 91: no passenger
Part 135: passengers (14 hours max for pilots)

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18
Q

Local flying area determined by

A

Certificate holder

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19
Q

Cell phones prohibited

A

While airborne

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20
Q

Three killers of ventilator patients during flight

A

Pericardial tamponade
Tension pneumothorax
Hypovolemia

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21
Q

Medical director not required to

A

Live in same state

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22
Q

Intubation requirement

A

Quarterly

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23
Q

Live intubation required during training

24
Q

Specialty team response time

A

45 minutes

25
Q

Pilot area orientation day/night

A

5 hours day/ 2 hours night

26
Q

Helipad required to have

A

2 paths, security

27
Q

Fixed wing twin engine time

28
Q

Ambulance fuel requirement

29
Q

ELT set off at

30
Q

Uniform fit

A

1/4 in space between body and uniform

31
Q

Dalton’s law

A

Tissue swelling, hypoxic hypoxia, O2 available at altitude

32
Q

Grahams law

A

Cellular gas exchange, diffusion

Gas moved from high to low concentration

33
Q

Effects of altitude worsen with

A

Cold upper latitudes

34
Q

Universal law

A

Combines Boyles and Charles laws

35
Q

Volume of gas in GI expands thrice at what altitude?

A

25,000 feet

36
Q

What law affects GI the most?

A

Boyles law

37
Q

ELT frequency

38
Q

Confirm ELT working

A

Tune it in and listen

39
Q

Twin engine required offshore

A

Raft, vest

40
Q

Rotor wing minimum ceiling/visibility

A

Day/local: 500 ft (ceiling) and 1 mile visibility
-xcountry: 1,000 ft and 1 mile

Night/local: 500 ft (ceiling) and 2 mile visibility
- xcountry: 1,000 ft and 3 mile visibility

41
Q

Number 1 cause of air medical crashes

A

Controlled flight into terrain, pushing the weather

42
Q

O2 adjustment calculation to maintain saturation at altitude

A

% oxygen patient is already on x pressure at departure
Divided by:
Pressure at altitude

Ex. FiO2 .40
Depart: 681
Altitude: 565
Answer: 48%

43
Q

Boyle’s law ascent

A

Barodontalgia (toothache)
Barosinutis can occur on ascent
Bariobariatrauma (obese) - nitrogen in fat cells cause the “bends”
-High flow O2 15 minutes prior to lift off

44
Q

Boyle’s law descent

A

Barotitus media (middle ear)

45
Q

Night vision lost at

46
Q

Stressors of flight

A

Third spacing
Fatigue
G-forces
Noise
Vibration
Hypoxia
Dehydration
Temp changes
Barometric pressure changes

47
Q

Personal factors affecting stressors of flight

A

DEATH

Drugs
Exhaustion
Alcohol
Tobacco
Hypoglycemia

48
Q

Dalton’s law

A

Sum total of partial pressures equal to total atmospheric pressures (Dalton’s gang)

Ex. Tissue swelling, altitude hypoxia, hypoxic hypoxia

This is why O2 is needed at altitude

49
Q

Newtons Laws

A

First law: object in motion stays in motion
Second law: force = mass x acceleration
Third law: every action has = and opposite reaction

50
Q

Efficient Zone

A

0 - 12,500 ft

51
Q

Physiologically deficient zone

A

12,500 - 50,000 ft

52
Q

Partial Space equivalent zone

A

50,000 ft - 120 miles

53
Q

PAVE Checklist

A

Pilot
Aircraft
enVironment
External pressures

54
Q

FAR 121.542/135.100

A

Sterile cockpit

55
Q

CAMTS Survival Standards

A

The transport vehicle must be equipped with survival gear

Critical Care FP-C 2.0 (15 decks)

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