Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Flight Paramedic Certification Study set > Flight physiology > Flashcards

Flight physiology Flashcards

You may prefer our related Brainscape-certified flashcards:
NREMT® Paramedic flashcards NREMT® EMT flashcards
1
Q

What three gasses are in the atmosphere?

A

Nitrogen 78%
Oxygen 21%
Argon 0.93%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many ATM (atmosphere) are at sea level?

A

1 ATM or 760 torr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many feet per 1 ATM (atmosphere)

A

33 feet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Barometric pressure per altitude?

A

Sea level- 760 torr or 1 ATM
10k ft msl- 523 torr
18k ft msl- 380 torr/ 1/2 ATM
63k ft msl- o torr/o ATM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Abbreviations for:

Above ground level
Above sea level
Mean sea level

A

AGL-Above ground level
ASL- Above sea level
MSL- Mean sea level

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Physiological zone Altitude and key facts

A

Sea level to 10k ft MSL

Night vision decreases starting at 5k ft MSL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Physiologic deficient zone altitude and key facts

A

10k-50k ft MSL

Need O2 or pressurized cabin at this altitude
Time of useful consciousness is cut in half

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Time of useful consciousness (TUC)

A

Effective performance time with poor O2 supply
Normal TUC is 90 seconds with normal decompression
Cut in half at deficient zone with rapid decompression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Space equivalent zone altitude and key facts

A

50k ft MSL and above

Astronauts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Boyles gas Law

A

As altitude increases, pressure decreases
Pressure of gas inversely proportional to volume at constant temp
Affects: ETT cuffs, drip chambers, skull fractures, ICP increases, air splints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Charles gas law

A

As air heats up, molecules spread and make air less dense
Volume of gas is proportional to temp of gas
This will affect how well the aircraft performs at various temps
Ex: when a ball is inflated indoors during the winter, it will shrink when brought outdoors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Dalton’s gas Law

A

Increased altitude, decreased partial pressure
Total pressure of gas mixture is equal to the pressure of all gasses in mixture
Ex: When ascending to higher altitude, less O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fick’s gas law

A

Inversely proportional to thickness of membranes and difference in partial pressure
Gas diffusion across alveoli
Ex: as altitude increases, pressure decreases and decreased perfusion rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Henry’s gas law

A

Solubility of gas in liquid
Affects divers, leads to decompression sickness (the bends)
Nitrogen comes out of tissue and into the venous system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Guy-Lussac’s gas law

A

Directly proportional to temp and pressure

Ex: why you have to add air to tires when it’s cold out

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Graham’s gas law

A

Gas exchange at cellular level
Heavier gasses diffuse slower
O2 molecules traveling through surfactant, CHF or mucous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is the O2 adjustment formula

A

FIO2x P1 / P2 = FIO2 required for ascent

P1 is pressure you are at on the ground
P2 is the pressure you will be flying at

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Altitude effects

A

Cold, dry, higher altitude environment has greatest negative outcome for patient.
Temp is inversely proportional to altitude
Greatest amount of pressure change occurs closest to sea level
For every 1k increase temp will decrease by 2c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Barodontalgia

A 
Occurs on ascent
Boyles law (air trapped in fillings)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Barotitis

A

Occurs on descent

Air trapped in middle ear

21
Q

Barosinusitis

A

Occurs on both ascent and descent

Sinus block causing maxillary pain

22
Q

Decompression sickness (the Bends)

A

Henry’s law
6 types of decompression sickness
Type 1-Joint and skin, nitrogen related. Painful joints mottled skin and itching
Type 2- Neuro. Rapid ascending paralysis, hypovolemic shock, pulmonary chokes, Preferred method of transport by ground, pressurized cabin or below 1k helicopter

23
Q

Babrobariotrauma

A

Obese pt’s, peds or pregnant patients
sudden release of nitrogen stores in lipids
Nitrogen washout before take off at 15 LPM non rebraether

24
Q

Inherent stressors of flight (8)

A

Thermal, humidity, G-Forces, fatigue, Pressure change, noise, vibration

25
Q

Self imposed stressor of flight (5)

A

Dehydration, exhaustion, alcohol, tobacco, hypoglycemia

26
Q

Types of hypoxia (4)

A

Hypoxic hypoxia- not enough O2 in lung (lung level hypoxia)
Stagnant-Blood isn’t moving or moving slowly (cellular level)
Hypemic-Transport problem (blood level) ex: anemia, co2 or fire vict.
Histotoxic- Tissue cannot accept or offload O2 (cellular hypoxia)

27
Q

Stages of Hypoxia (4)

A

Indifferent-full reasoning
Compensatory- Increased HR and RR, slowed judgement
Disturbance- Slurred speech, impaired judgment (drunk)
Critical-No longer able to physiologically function, death imminent

28
Q

O2 is required above 10k ft for any time greater than how many minutes?

A

30 minutes

29
Q

What is the body’s PaO2 at 10k ft ASL

A

61 mmHg (90% SPO2)

30
Q

Boyle’s law states that as altitude increases, pressure __________?

A

Decreases

31
Q

If you set a 2000 psi hot O2 cylinder outside overnight, would you expect the pressure to increase or decrease?

A

Charles law

DECREASE

32
Q

If you placed a balloon in a freezer then removed it into a warmer place, would the balloon grow, shrink or stay the same due to which gas law?

A

Grow

Gay-Lussac’s law

33
Q

For every 1,000 feet increase in altitude the temp decreases by how many degrees celsius?

A

2 degrees celsius

34
Q

Is barodontalgia and ascent or descent problem?

A

Ascent

35
Q

Is Barotitis media an ascent or descent problem?

A

Descent

36
Q

Is barosinusitis primarily an ascent or descent problem?

A

60% occur on descent but can happen on both

37
Q

What 3 main population groups does barobariotrauma effect?

A

Obese pt’s
pregnant pt’s
Pediatric pt’s

38
Q

While diving, you will experience 1 additional ATM for how many feet you descent?

A

Every 33 feet

39
Q

The greatest pressure changes occur within how many feet below sea level and above sea level?

A

The first 4 feet while diving and the first 5000 feet while flying

40
Q

During flight, what amount of low frequency vibrations may you feel? (amount in HZ)

A

1-12 HZ

41
Q

What are two examples of stagnant hypoxia?

A

Cardiogenic shock

High G-Forces

42
Q

What are 3 causes of hypemic hypoxia?

A

Anemia
CO poisoning
Sickle cell disease

43
Q

What are the 4 different stages of hypoxia? (ICDC)

A

Indifferent
Compensated
Disturbance
Critical

44
Q

What gravitational force is best tolerated?

A

GX (anterior/posterior force)

Like accelerating in your car

45
Q

Which gravitational force is least tolerated?

A

(Lateral) GY

Like being t-boned

46
Q

What are the 4 different types of hypoxia?

A

Hypoxic hypoxia
Stagnant hypoxia
Hypemic hypoxia
Histotoxic hypoxia

47
Q

PaO2 decreases ____mmHg for every 1000 feet increase in altitude?

A

5 mmHg

48
Q

Space altitude in feet?

A

250,000 feet and above

Flight Paramedic Certification Study set (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions