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Revision 1 Flashcards

1
Q

1st pharyngeal arch

A

Tragus and ant helix
Ext auditory meatus
Malleus and incus

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2
Q

2 pharyngeal arch

A

Rest pinna
Stapes suprastucture

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3
Q

1 pharyngeal cleft ecto

A

Ext auditory cannal

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4
Q

1 pharyngeal pouch/ tympanic recess
endo

A

Middle ear cleft
( ME cavity + Mastoid Antrum+ Eustachian tube)

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5
Q

Otic capsule

A

Stapes foot plate + annular ligament

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6
Q

Pars sup.

A

Semicircular canal
Utricle
Endo lymphatic sac

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7
Q

Pars inf

A

Saccule
Cochlea

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8
Q

Microtia/Anotia

A

Pinnaplasty/otoplasty-autologus rib cartilage 6 yrs

BAHA

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9
Q

Landmark of Mastoid Antrum
i) bony
ii) cartilagenous

A

I) Mac ewans triangle
ii) Cimba concha

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10
Q

Ear pain n increase on jaw movement
O/E : lesion on outer1/3 tragus sign +

A

Furuncle

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11
Q

Pain discharge h/o trauma
O/E Diffuse edema of EAC tragal sign +

Cause

A

Diffuse ottitis externa(swimmer ear)

Pseudomonas

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12
Q

Pain discharge fullness itching
O/E- wet newspaper / cotton ball

A

Otomycosis

Aspergillus Candida

Aural toilet anti fungal

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13
Q

Pain discharge fullness
O/E vesicles in outer 1/3 EAC facial palsy

A

Herpes Zoster Oticus

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14
Q

Severe pain discharge granulation immunocompromised facial palsy

No mitotic figure
High uptake of Tc99

A

Malignant otitis externa( skull based osteomyelitis)

Pseudomonas

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15
Q

Severe otalgia
H/o chr sinusitis bronchiectasis
O/E Facial falsy, white mass in deep meatus widening of EAM

A

Keratosis obturans

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16
Q

Type of joint
1. Incudomalleolar
2. Incudostapedial

A
  1. Saddle joint
  2. Ball and socket
17
Q

Ossicular necrosis

A
  1. Long process of incus
  2. Head of stapes
18
Q

Child with B/L HL ( painless,fluctuating)
Speech delay snoring
Or
Adult- U/L progressive HL
O/E TM- dull bluish retracted with fluid level &air bubbles

Cause
Best ix
Mx

A

Serous otitis media
Adenoid hypertrophy (child)
Nasopharyngeal ca (adult)

Tympanimetry B type curve

1st - Medical 3 mo
Adenoidectomy+ myringotomy+ grommet insertion

19
Q

Adult (female) B/L progressive HL
Post pregnancy (aggravating factor)
Similar complaints in mother (autosomal dominant)

A

Otosclerosis

Ix- TFT- CHL (mostly)
PTA- CHL ( carhartz notch)
Tympanimetry (best) As type curve
Stapedial reflex -nt
Gelles -ve

20
Q

Adult (female) B/L progressive HL
Post pregnancy (aggravating factor)
Similar complaints in mother (autosomal dominant)

A

Otosclerosis

Ix- TFT- CHL (mostly)
PTA- CHL ( carhartz notch)
Tympanimetry (best) As type curve
Stapedial reflex -nt
Gelles -ve

21
Q

Narrowest part of ME

A

Mesotympanum

22
Q

Middle Ear wall relations
1. Anterior
2. Posterior
3. Medial
4. Inferior
5. Roof

A
  1. Int carotid artery
    Chorda tympani nerve
    Eustatian tube
    Tensor tympani mus.
  2. Aditus
    Pyramidal eminence
    Chorda tympani nerve
  3. Lateral SCC
    Facial canal prominence
    Oval window
    Promontory
    Round window
  4. Internal jugular vein
  5. Tegmen tympani
23
Q

Structures of ear not developed at birth

A

Bony EAC
Mastoid tip ( 2 yrs )

24
Q

From how many ossification center the inner ear develop

25
When does fetus start hearing
20 wks as organ of corti develops by 20-25 wks
26
Collaural fistula
Congenital anomaly of 1st brachial cleft Traverse close to facial nerve within parotid B/w EAC (open in floor) and neck ( b/w mandible and SCM)
27
Pericondritis
Red hot painful pinna sparing lobule Mc cause 1 Trauma 2. Infection from diffuse otitis externa or furuncle Pseudomonas Mx- Ciprofloxacin
28
Contents n function 1. SCC 2. Utricle n saccule 3. Scala media/cochlear duct 4. Vestibule 5. Scala vestibuli n tympani
1. Cristae- rotational acceleration 2. Maculae- linear acceleration, gravitation and head tilt movement 3. Organ of corti ,endolymph(k+) 4. Perilymph ( Na+, CSF)
29
Excitatory neurotransmitter in ear
Glutamate
30
Peripheral Nystagmus 1. Direction 2. Property 3. Example
1. fast component Vertical canal ( S. SCC , P. 2. Latency +, Duration 1.5-2 min , Fatiguability+, optic fixation
31
Causative organism 1. ASOM 2. CSOM
1. Streptococcus pneumonia (mc) H. influenza Moraxella catarrhalis,etc 2. Mixed pseudomonas e. coli proteus staph. aureus
32
C/O- acute onset ear pain +discharge+h/o URTI O/E TM congested cart wheel appearance Light house sign /pulsatile otorrhoea Stages
Acute otitis media Stages Tubal congestion Pre suppuration Suppuration Resolution Complication Decongestant Abx Myringotomy curvillinear incision at postero inferior quadrant

ENT (1 decks)

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