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Acute Suppurative Otitis Media

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Presentation on theme: "Acute Suppurative Otitis Media"— Presentation transcript:

1 Acute Suppurative Otitis Media
Dr. Vishal Sharma

2 Definition Pyogenic infection of middle ear cleft lasting for < 3 weeks. Routes for infection: Via Eustachian tube Via Tympanic membrane perforation Haematogenous (rare)

3 Predisposing Factors 1. Breast feeding in supine position
2. Recurrent upper respiratory tract infection 3. Nasal allergy 4. Chronic rhinitis & sinusitis 5. Tumours of nose & nasopharynx 6. Exposure to cigarette smoke 7. Cleft palate

4 Bacteriology Haemophilus influenzae Streptococcus pneumoniae
Staphylococcus aureus Moraxella catarrhalis  - Hemolytic streptococci (causes acute necrotizing otitis media)

5 Stages of A.S.O.M.

6 1. Stage of Hyperaemia Synonym: Stage of tubal occlusion Mild earache
T.M. retracted in early stage T.M. congested later stage Cartwheel appearance: radiating blood vessels from handle of malleus

7 Cart wheel appearance

8 2. Stage of Exudation High fever Severe earache Deafness
Marked congestion + bulging of T.M. Mastoid tenderness P.T.A.: high frequency conductive deafness due to mass effect of pus

9 Stage of Exudation

10 Stage of Exudation

11 Stage of Exudation

12 Stage of Exudation

13 Nipple sign (impending perforation)
Localized protrusion of tympanic membrane due to destruction of fibrous layer by continuous pressure of pus

14 3. Stage of Suppuration Symptoms:
Ear discharge (blood-stained  purulent) Increased deafness Decreased fever Decreased earache

15 Blood stained otorrhoea

16 Signs & Investigations
Pinhole perforation + otorrhoea Light house sign: intermittent reflection of light Decreased mastoid tenderness High (mass effect) + low frequency (stiffness effect of thick periosteum) Conductive deafness Clouding of air cells in mastoid X-ray

17 Light House sign

18 Pinhole perforation

19 Clouding of mastoid cells

20 4. Stage of Coalescent Mastoiditis
Otorrhoea > 2 weeks, otalgia & deafness Mastoid reservoir sign: pus fills up on mopping Sagging of postero-superior canal wall caused by peri-osteitis due to pus in adjacent mastoid antrum Ironed out appearance of skin over mastoid due to thickened periosteum Mastoid cavity in X-ray & CT scan

21 Pathogenesis Aditus Blockage  Failure of drainage
 Stasis of secretions  Hyperemic decalcification  Resorption of bony septa of air cells  Coalescence of small air cells to form cavity  Empyema of mastoid cavity

22 Pathogenesis

23 Mastoid reservoir sign

24 Sagging of posterior wall

25 Ironed out appearance

26 Mastoid cavity

27 Mastoid cavity

28 5. Stage of Resolution Otorrhoea stops Normal hearing
Healed perforation

29 Stage of Resolution

30 Sterile exudate in middle ear

31 6. Stage of Complications
Sub-periosteal abscess Vertigo Headache + blurred vision + projectile vomiting Fever + neck rigidity + irritability Drowsiness Gradenigo syndrome (apex petrositis)

32 Treatment of A.S.O.M. Systemic Antibiotic
Nasal decongestants (systemic + topical) H1 anti-histamines Analgesic + anti-pyretic Aural toilet for ear discharge Heat application for severe earache Review after 48 hours

33 Ciprofloxacin: 500mg B.D. Doxycycline: 100 mg B.D.
Amoxicillin-clavulanate duo: 625 mg B.D. Ciprofloxacin: 500mg B.D. Doxycycline: 100 mg B.D. Cefadroxil: 500 mg B.D. Cefaclor: 500 mg T.I.D. Cefuroxime: 250 mg B.D. Cefixime: 200 mg B.D. Cefpodoxime: 200 mg B.D. Azithromycin: 500 mg O.D. Clarithromycin: 250 mg B.D.

34 Antihistamines Systemic: Cetirizine: 10 mg OD Fexofenadine: 120 mg OD
Loratidine: 10 mg OD Levocetrizine: 5 mg OD Desloratidine: 5 mg OD Topical: Azelastine spray (0.1%): 1-2 puff BD

35 Nasal Decongestants Systemic decongestants  Phenylephrine
 Pseudoephedrine Topical decongestants  Xylometazoline  Oxymetazoline  Saline

36 Anti-cold preparations
Name Chlorpheniramine Decongestant Paracetamol COLDIN 4 mg PsE 60 mg 500 mg SINAREST DECOLD PhE 7.5 mg SUPRIN 2 mg PhE 5 mg PsE = Pseudoephedrine; PhE = Phenylephrine

37 Topical Decongestants
Oxymetazoline 0.05 %: 2-3 drops BD (NASIVION) Oxymetazoline %: 2 drops BD (NASIVION-P) Xylometazoline 0.1 %: 3 drops TID (OTRIVIN) Xylometazoline 0.05 %: 2 drops BD (OTRIVIN-P) Saline 2 %: 3 drops TID Saline 0.67 %: 2 drops BD (NASIVION-S)

38 On review after 48 hours Earache + fever persists: change to higher antibiotic. If T.M. is bulging  perform myringotomy. Send ear discharge for C/S. Earache + fever subside: continue same treatment for days Review after 3 months

39 On review after 3 months No effusion: no further treatment
Effusion persists: treat as Otitis Media with Effusion Presence of abscess or coalescent mastoiditis: do cortical mastoidectomy

40 Myringotomy in A.S.O.M. Curvilinear incision made in postero-inferior quadrant. Incision is curvilinear & not radial (as in OME), to cut fibres of TM. This keeps opening patent for long time.

41 Why make incision in PIQ?
 Least vascular area  T.M. bulge is maximum  Ossicles not damaged  Easily accessible

42 Sub-periosteal abscess & fistula

43 Pathology Production of pus under tension
 hyperaemic decalcification (halisteresis) + osteoclastic resorption of bone  sub-periosteal abscess  penetration of periosteum + skin  fistula formation

44 Sub-periosteal abscess formation

45 Sub-periosteal fistula: dry

46 Sub-periosteal fistula: wet

47 Types of sub-periosteal abscess
Post-auricular Bezold Citelli Zygomatic Luc Retro-mastoid Parapharyngeal & Retropharyngeal

48 Types of sub-periosteal abscess

49 Post-auricular abscess
Commonest. Present behind the ear. Pinna pushed forward & downward.

50 Bezold & Citelli abscesses
Bezold: neck swelling over sternocleido- mastoid muscle Citelli: neck swelling over posterior belly of digastric muscle

51 Bezold’s abscess

52 Bezold’s abscess

53 Luc: swelling in external auditory canal
Zygomatic: swelling antero-superior to pinna + upper eyelid oedema Retro-mastoid: swelling over occipital bone (? Citelli’s abscess) Parapharyngeal & Retropharyngeal: due to spread of pus along Eustachian tube

54 Retromastoid abscess

55 Giuseppe Gradenigo (1859 – 1926)
Gradenigo syndrome Giuseppe Gradenigo (1859 – 1926)

56 Defining triad  Persistent otorrhoea: despite adequate cortical mastoidectomy  Retro-orbital pain: Trigeminal nerve involvement  Diplopia: convergent squint due to lateral rectus palsy by injury to abducent nv in Dorello’s canal under Gruber’s petro-sphenoid ligament, at petrous apex

57 Persistent otorrhoea + Retro-orbital pain +
Convergent squint

58 Right Convergent squint
Right gaze Central gaze Left gaze

59 Etiology: Coalescent mastoiditis involving petrous apex along postero-superior & antero-inferior tracts in relation to bony labyrinth Diagnosis: 1. C.T. scan temporal bone for bony details. 2. M.R.I. to differ b/w bone marrow & pus Treatment: Modified radical mastoidectomy & clearance of petrous apex cells

60 C.T. scan & M.R.I.

61 Hearing preserving approaches to petrous apex
Eagleton’s middle cranial fossa approach Frenckner’s subarcuate approach Thornwaldt’s retro-labyrinthine approach Dearmin & Farrior’s infra-labyrinthine approach Farrior’s hypotympanic sub-cochlear approach Lempert Ramadier’s peri-tubal approach Kopetsky Almoor’s peri-tubal approach

62

63 Hearing sacrificing approaches to petrous apex
Trans-cochlear approach Trans-labyrinthine approach

64 Spread of pus

65 Post-auricular: Lateral spread
Bezold: Inferior spread Citelli: Inferior spread Luc: Anterior spread Zygomatic: Superior spread Retro-mastoid: Posterior spread Parapharyngeal: Medial spread Retropharyngeal: Medial spread Gradenigo syndrome: Medial spread

66 Cortical Mastoidectomy

67 Antiseptic dressing

68 Draping

69 Infiltration

70 Marking of incision

71 Wilde’s post-aural incision

72 Incision deepened

73 Musculoperiosteal flap elevated

74 Bezold’s abscess

75 Aspiration of pus

76 Drainage of abscess

77 Drainage of abscess

78 Corical mastoidectomy begun

79 Exposure of mastoid antrum

80 Widening of aditus

81 Aditus widened

82 Final Cavity

83 Cortical Mastoidectomy

84 Drain put in mastoid cavity

85 Mastoid dressing

86 Healed post-aural scar

87 Thank you


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