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ENT > Diseases Of External Ear > Flashcards

Diseases Of External Ear Flashcards

1
Q

Congenital abnormalities of pinna

A 
Anotia
Microtia
Macrotia
Bat earcup / Lop ear
Cryptotia
Coloboma
Ear lobule deformity
Pre auricle tags / appendages
Pre auricular pits / Sinus
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2
Q

Minor deformities of pinna

A

Darwin’s tubercle
Stahl’s ear
Satyr ear

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3
Q

Trauma to the pinna (auricle)

A 
Haematoma
Lacerations
Avulsion
Frostbite
Keloid
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4
Q

Inflammatory disorders of the pinna

A

Erysipelas
Cellulitis
Perichondritis
Relapsing polychondritis

Chondrodermatitis nodularis chronica helicis

Tumors

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5
Q

Galium 67 used in malignant otitis externa

A

Detect soft tissue infection

Taken up by monocytes + reticuloendothelial cells

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6
Q

Technitium 99 used in diagnosis

A

Bone infection in malignant otitis externa

Results positive for 1 yr

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7
Q

Arnold’s nerve

A

Auricular branch of vagus nerve(X)

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8
Q

Swimmer’s ear

A

Otitis externa

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9
Q

Otitis externa /swimmer’s ear causes

A

Bacterial (pseudomonas, E coli,S. Aureus)

Fungal (candida, aspergillus)

Dermatological (alllergic contact dernatitis, psoriasis, atopic dermatitis

Diabetes

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10
Q

Signs of swimmer’s ear/ititis externa

A

Pinna traction
Otorrea (yellow discharge)

Swelling purulent debris (canal obstruction)(conductive hearing loss)

Post. Auricular lymphadenopathy
External ear canal pruritis

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11
Q

Complicated otitis externa signs

A

Periauricular soft tissue erythema

Swelling

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12
Q

Hearing test in otitis externa/swimmer’s ear

A 
Weber test (sound lateralized to affected ear)
Rinne test (BC > AC)
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13
Q

Signs of otitis externa /swimmer’s ear

A 
Ear pain(otalgia)
Discharge/debris (yellow ,white,gray)
Pruritis
Tinnitus
Hearing loss
Lymphadenopathy
Fever
External auditory canal occluded (erythematous+edematous)
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14
Q

Types of otitis externa (eitiological)

A

Infective

Reactive

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15
Q

Infective type of Otitis Externa include

A 
Bacterial 
  Furuncle/localized OE
  Diffuse OE
  Malignant OE
Viral
  Herpes zoster oticus
  OE haemorrhagica
Fungal
  Otomycosis
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16
Q

Reactive type of otitis externa include

A

Eczematous OE
Seborrhoeic OE
Neurodermatitis

17
Q

Herpes zoster oticus

A 
Vesicles on tympanic membrane
Meatal skin
Concha
Postauricular groove
7th + 8th nerve involved
18
Q

Otitis externa haemorrhagica

A

Haemorhhagic bullae on tympanic membrane
Deep meatus
Severe pain
Blood stained discharge(bullae rupture)

19
Q

Furuncle /Localized Acute OE

A 
Staph. infection of hair follicle
Furucle only in meatus
Single/multiple
Severe pain
Tenderness
Painful pinna movement
Painful jaw movement
Edema over mastoid (post meatal wall)
20
Q

Treatment of Furuncle OE

A

10% Ichthammol glycerine

Provide splintage and reduces pain

21
Q

Diffuse OE

A

Diffused inflammation of meatal skin

Pinna + epidermal layer of tympanic membrane

Excessive sweating changes pH of meatal skin (alkaline)

Leads trauma + invasion of pathogens

22
Q

Phases of Diffuse OE

A

Acute

Chronic

23
Q

Acute phase Diffuse OE

A 
Hot burning sensation
Pain (jaw movement)
thin serous discharge (thick+purulent)
Meatal lining (inflammed+swollen)
Conductive hearing loss(oclusion)
Lymph nodes swell +tender(cellulitis)
24
Q

Chronic phase of diffuse OE

A

Irritation
Itching
Discharge scanty (dry crusts)
Meatal skin (thick + swollen + scalling + fissuring)
Chronic stenotic OE(hypermetropic meatal skin)

25
Q

Malignant /necrotizing OE

A 
Pseudomonas infection
Elderly diabetics / immunosuppressive
Excruciating pain
Granulation in ear canal
FACIAL PARALYSIS
SPREAD
  Skull+jugular foramen(nerve palsies)
  Ant. Temporomandibular fossa
  Post. Mastoid
  Medially middle ear+petrous bone
Severe otalgia
26
Q

Fungal OE /otomycosis

A 
Aspergillus niger, fumigatus, candida
Tropical and subtropical
Intense itching
Pain 
Watery discharge (musty odour)
Ear blockage
Fungal mass (white/brown/black)
Meatal skin red + edematous

Antifungals (nystatin,clotrimazole,povidone iodine)
Keratolytic (2% salicylic acid)

27
Q

Eczematous OE

A 
Hypersenstivity to organisms/ear drops(neomycin)
Allergic reaction(hearing aids)
Intense irritation
Vesicle formation
Canal crusting+oozing
28
Q

Seborrhoeic OE

A

Seborrhoeic dermatitis of scalp
Itching
Greasy yellow scales (canal+lobule+postauricular sulcus)

29
Q

Neurodermatitis

A

Compulsive scratching (psychological)
Intense itching
Bacterial infection may follow

30
Q

Area of collection in canal/blind pocket

A

Anteroinferior meatal recess

31
Q

Ear toilet

A

Blind spot specially
Dry mopping
Suction clearance
Irrigation (warm sterile normal saline)

32
Q

Medicated wicks

A

Gauze wick Soaked in antibiotic steroid
2-3 times a day
Local steroid drops releive edema, erythema and prevent itching

Aluminium acetate 8% ,silver nitrate 3% mild astringents (dry up oozing meatus)

33
Q

Antibiotics for treatment of malignant/necrotizing OE

A

Gentamicin+ticarcillin IV
(Ototoxic+nephrotoxic)
Cephalosporins(ceftriaxone/ceftazidime)
Quinolones+rifampin

34
Q

Primary cholesteatoma of EAC

A 
Squamous epithelium invades bone
Abnormality conductive for epithelium
Post traumatic /post surgical
Starts from posteroinferior part of ear canal
Purulent otorrhoea
Pain
Granulation(sequestrated bone)

ENT (18 decks)

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