Week 6- ENT Flashcards Preview

Nurp 500: Health Assessment > Week 6- ENT > Flashcards

Flashcards in Week 6- ENT Deck (51)
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1

Ear development occurs at the same time as ___ development- malformation or dysfunction in one system should alert the healthcare provider to problems in the other.

Kidney

2

The external ear comprises:

Auricle and ear canal

3

In the air filled middle ear these structures transform sound vibrations into mechanical waves for the inner ear:

Ossicles- the malleus, the incus, and the stapes

4

The proximal end of ___ connects the middle ear to the nasopharynx.

The Eustachian tube

5

The inner ear includes:

The cochlea, the semicircular canals, and the distal end of the auditory nerve (vestibulocochlear nerve or CN VIII)

6

Movements of the ___ vibrate the perilymph in the labyrinth of the semicircular canals and the hair cells and endolymph in the ducts of the cochlea, producing electrical nerve impulses transmitted by the auditory nerve to the brain.

Stapes

7

The first part of the hearing pathway, from the external ear through the middle ear, is known as:

The conductive phase

8

The second part of the hearing pathway, involving the cochlea and the cochlear nerve is:

The sensorineural phase

9

____ describes the normal first phase in the head pathway.

Air conduction

10

A vibrating tubing fork, placed on the head, sets the bone of the skull into vibration and stimulates the cochlea directly.

Bone conduction

11

In normal hearing what is more sensitive: bone or air conduction?

AC is more sensitive than BC
( AC > BC)

12

Nontender modular swellings covered by normal skin deep in the ear canals that are non malignant overgrowths which may obscure the drum:

Exotosis

13

Movement of the auricle and tragus (tug test) is painful in:

Acute otitis externa

14

Tenderness behind the ear occurs in:

Otitis media

15

In an adult, to see the internal structures by straightening the ear canal:

Pull the auricle upward, backward, and slightly away from the head.

16

Cone of light in right ear:

At 5 o’clock

17

Cone of light in the left ear:

7 o’clock

18

Most specific and sensitive hearing test?

Whispered voice test - sensitivity 90-100% and specificity 70-87%. Defects significant hearing loss of greater than 30 decibels.

19

These tests may be done for patients failing the whispered voice test to help determine if hearing loss is conductive or sensorineural:

Weber and Rinne

20

Weber test is used for:

Unilateral hearing loss only

21

In unilateral conductive hearing loss sound is heard in what ear with the Weber test?

Impaired ear: explanations include otosclerosis, otitis media, perforation of the eardrum, and cerumen.

22

In unilateral sensorineural hearing loss with the Weber test, sound is heard in:

The good ear.

23

What tests compares air conduction and bone conduction?

Rinne

24

What is normal finding for the Rinne?

AC > BC

25

In conductive hearing loss with the Rinne test, sound is:

Heard through bone as long or longer than it is through air ( BC = AC or BC >AC)

26

In sensorineural hearing loss with the Rinne test, sound is heard:

Longer through air (AC > BC)

27

A pneumatic scope with peds patient allows puff of air to go into air canal and TM should flutter with air; if TM fails to move:

Likely middle ear effusion

28

Eustachian tube in peds is:

Shorter, wider, and more horizontal than an adults allowing for pathogens from the nasopharynx to migrate through to the middle ear.

29

This part of the ear transmits sound by vibrations of the TM causing the ossicles and oval window to set the inner ear fluids in motion:

Inner ear

30

Hair cells in the inner ear transmit impulses to what cranial nerve that then transmits to the brain:

CN VII