Ears

Question 1

Where in the ear is an air filled cavity and eustachian tube?

Answer 1

Middle ear

Question 2

what does the eustachian tube do?

Answer 2

Connects to the nasopharynx and allows you to equalise

Question 3

forced valsava manoeuvre to clear middle ear

Answer 3

round window membrane reptured. Loss of fluid from inner ear –> ears ringing, vertigo, disorientation, blockage sensation

Surgery

Question 4

barotrauma caused by descent

Answer 4

most common damage
ear drum bulges inwards, eardrum reptures, cold water into middle ear, temp drops affecting balance and hearing, body heats cold water, feel fine, ascent, inform supervisor

Question 5

what does valsalva manoeuvre mean?

Answer 5

ear cleaning

Question 6

what can block the outer ear canal?

Answer 6

wax, hood, ear plugs

Question 7

what is reversed ear?

Answer 7

middle ear pressure greater than outer ear pressure

Question 8

what is barotrauma

Answer 8

pressure = baro
trauma= damage

Question 9

what barotrauma can occur if you ascend too quickly

Answer 9

decrease of pressure on ascent causes air spaces to expand and tissues to swell. gas escapes into other tissues or the bloodstream leading to further damage

Question 10

where are the body air spaces?

Answer 10

Sinuses, ears, lungs

stomach, intestines, teeth

Question 11

what are sinuses

Answer 11

air filled cavities in the skull that connect to respiratory tract