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ear Flashcards

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1
Q

Only part of external ear which develops from 1st branchial arch

A

Tragus of pinna

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2
Q

incision passing via incisura terminalis

A

LEM PERT END AURAL INCISION

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3
Q

failure of union of the 1st and the 2nd brachial arch leads to

A

preauricular sinus

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4
Q

Bat ear

A

Absence of anti helix

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5
Q

development of inner ear

A

1- pars superior gives rise to semicircular canal and utricle
2- pars inferior gives rise to cochlea and saccule

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6
Q

Cochlea develops from

A

Neuroectoderm

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7
Q

nerve supply of pinna

A
  • greater auricular nerve
  • lesser occipital n
  • auriculotemporal n
  • vagus n : auricular branch
  • facial n : sensory branch
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8
Q

Main nerve supply of pinna
Injured in which surgery

A

Greater auricular nerve
Parotid surgery

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9
Q

neuroectoderm derivatives in the ear

A
  • footplate of staples
  • cochlea
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10
Q

Boxer ear / cauliflower ear

A

Necrosis of cartilage—> post trauma pinna deformity

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11
Q

Rx for ear wax

A

PARA DI CHLORO BENZENE drops -> syringing or suction

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12
Q

cold water should never be used in syringing bcoz of

A

leads to vertigo

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13
Q

syringing is also done in the
_____ direction

A

posterio superior

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14
Q

EAC infection goes to the parotid gland via _____

A

fissure of SANTORINI

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15
Q

Doctor was cleaning the ear suddenly pt starts coughing or has a syncopal episode

  • which nerve is stimulated ?
A

Arnold nerve ( auricular branch of vagus)

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16
Q

m/c organism to cause diffuse otitis externa ( swimmers ear)

A

PSEUDOMONAS

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17
Q

Rx of furunculosis

A

IG packing

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18
Q

malignant otitis externa
- clinical picture?

A

1) severe ear ache
2) blood stained ear discharge
3) VII CN involved
4) +_ 9, 10 , 11 , 12 CN palsy

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19
Q

diagnostic invgt of malignant otitis externa

A

technetium ( bone ) scan

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20
Q

DOC for malignant otitis externa

A

3rd gen cephalosporin +_ aminoglycosides

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21
Q

malignant otitis externa
- assess response of Rx

A

1) gallium bone scan
2) CRP
3) ESR

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22
Q

causative organism for otomycosis

A

aspergillus niger -> candida

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23
Q

wet newspaper appearance on otoscope

A

OTO MY CO SIS

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24
Q

Glue ear
Also known as
Etiology
M/c cause
Rare cause

A

SOM or OME
ET blockage
M/c cause adenoid hypertrophy - school age children

Rare cause nasopharyngeal ca in adults unilat

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25
Adult with unilat glue ear Diagnosis
Nasopharyngeal ca
26
diagnosis Mouth breathing child with hearing loss + heaviness of ear examination: air bubbles trapped in glue
Adenoid hypertrophy with glue ear
27
Rx for glue ear
myringoplasty + grommets incision + / - adenoidectomy
28
Otoscope m/c cause of air bubble behind TM
Glue ear
29
Scutum
Outer attic bony wall of epitympanium
30
Sensory supply of middle ear
Tympanic branch of glossopharyngeal nerve (JACOBSON’s nerve)
31
m/c site for residual cholesteatoma after mastoid surgery
sinus tympani
32
________ is also known as seecondary TM
round window
33
ASOM - m/c organism
strept. pneumoniae
34
on examination cartwheel sign is seen in? explain cartwheel sign?
ASOM cartwheel sign : red TM with dilated capillaries
35
type of discharge in csom
mucopurulent, non foul smelling, non blood stained
36
csom type of hearing loss
conductive
37
1st ossicle (part to be eroded in csom + reason
incus (lenticular process) - no muscle attachment - least blood supply
38
austin classification of ossicular erosion A- B- C- D-
A: M+ I- S+ B: M+ I- S- C: M- I- S+ D: M- I- S-
39
classification of tympanoplasty
I- myringoplasty II- graft placed on incus III- my ringo stap e dio pexy or columnar tympanoplasty IV- RW shielding effect V- fenestration
40
first sign of mastoiditis
ironing of the mastoid surface
41
signs of mastoiditis
1- ironing 2- mastoid tenderness + 3- skin sagging in post.sup area of EAC 4- reservoir sign 5- light house sign
42
light house sign seen in
- mastoiditis - asom with small perforation
43
mastoiditis xray view ? what is seen ?
sculler view seen - - clouding of air cells - coal e scence of air cells
44
Rx for mastoiditis
antibiotics for 48 hrs ----> no recovery surgery- cortical mastoidectomy "SCH WARTZ operation"
45
SCHWARTZ operation first cell to be located? anatomical landmark
antrum landmark: McEwen's triangle
46
in which condition will there be a difficulty in identifing mcewan's triangle
korner septum - persistance of petrosquamous suture
47
symptoms of gar din e go syndrome
ear discharge retro orbital pain diplopia
48
hallmark of attico antral csom
presence of cholesteatoma
49
m/c site of cholesteatoma
PRU SS AK's space
50
Rx for cholesteatoma
MRM (tympanomastoid exploration)
51
combined approach tympanoplasty is a canal wall up or down surgery?
canal wall up
52
_____ sign is seen in labyrinth fistula
positive fistula
53
false positive fistula sign is seen
meneire disease congential syphilis
54
false negative fistula sign is seen in
fistula with dead labyrinth fistula covered by cholesteatoma wrong technique
55
sigmoid sinus thrombosis signs and symptoms
headache pallor picket fence fever GRI ES SINGER sign
56
GRI ES SINGER sign - seen in - explain
sigmoid / lateral sinus thrombosis - pitting edema in the mastoid
57
2 tests used to check IVP in lateral sinus thrombosis
tobey ayer test- on LP crowe beck test- fundus examination
58
endolymph a) produced by b) absorbed by c) - not done properly can lead to
a) stria vascularis b) endolymphatic sac c) meniere's disease
59
post meningitis deafness is lead by _________ pathway
aqueduct of cochlea
60
MONDINI dysplasia of the cochlea Rx?
1 1/2 turn ( n: 2 3/4) cochlear implant
61
MICHEL's aplasia of cochlea Rx?
auditory brainstem implant
62
BPPV a) diagnostic test b) Rx c) other maneuvre
a) DIX HALL PICK MANEUVER b) EPLEY maneuver c) SEMONT maneuvre
63
SCC m/c involved with BPPV
posterior SCC
64
persistence of BPPV even after EPLEY MANEUVRE
BRAND T - DAROFF EXERCISES
65
_____ is area of fusion of superior and posterior SCC
CRUS COMMUNE
66
bithermal caloric test is a test for
lateral SCC measures the vestibulo ocular reflex
67
______ is an electrical reading of nystagmus
electro nystagmo graphy (EMG)
68
saccule nerve supply
inferior vestibular division of the VIII cn
69
VEMP is used to detect the fn of :
saccule inferior vestibular division of the VIII cn
70
VEMP is used in
acoustic neuroma meniere's disease superior SCC dehiscence
71
clinical picture of superior SCC dehiscence
CHL 3rd window phenomenon tullio's phenomenon vertigo on blowing nose

ENT (2 decks)

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