eyes, ears, nose and throat
DESCRIPTION
EYES, EARS, NOSE AND THROAT. conjunctivitis Most common eye disease May be acute or chronic Most cases caused : 1- bacterial (gonococcal and chlamydial ) 2-viral infection Other causes : allergy and chemical irritants. Bacterial Conjunctivitis - PowerPoint PPT PresentationTRANSCRIPT
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EYES, EARS, NOSE AND THROAT conjunctivitisMost common eye diseaseMay be acute or chronicMost cases caused : 1- bacterial (gonococcal and chlamydial ) 2-viral infectionOther causes : allergy and chemical irritants
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Bacterial ConjunctivitisA.Gonococcal ConjunctivitisAcquired through contact with infected
genital secretions.Manifested by a copious purulent dischargeInvolvement of corneal leads to perforationDx confirmed by stained smear and culture
of the discharge.
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TreatmentTopical antibiotic :erythromycin or bacitracinSingle IM dose of ceftriaxone ,1g ,is effectiveWhen the cornea is involved , a 5-day of
parenteral ceftriaxone ,1-2g daily ,is required.
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viral ConjunctivitisAdenovirus is the most common causeAssociated with :pharyngitis, fever, malaise
and preauricular adenopathy.Characterized by :red palpebral conjunctiva
and copious watery dischargeTreatment : local sulfonamide therapy , hot
compresses
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Allergic ConjunctivitisNo pain , vision changesMarked pruritusBilateral watery eyesTreatment :antihistamine or steroid drops
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Herpes Zoster OphthalmicusFrequently involves the ophthamic division
the trigeminal nerve.Eruptions preceded by :malaise, fever,
headache and burning and itching in the peri-orbital region.
Rash ccc v vesicular pustular crusting
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Ocular manifestations: Conjunctivitis Keratitis Episcleritis Anterior uveitis Elevated intraocular pressure Treatment :high dose oral acyclovir
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Uveitis• Inflammation of the iris , ciliary body and /or
choroid• Characterized by : pain , miosis, photophobia• Diagnosis made by slit lamp examination• Flare & cells seen in aqueous humor• Seen in IBD, sarcoidosis• Treatment underlying disease
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Glaucoma• A group of diseases that can damage the
eye’s optic nerve and result in vision loss and blindness
• 2 types :1.Angle –closure glaucoma2.Open-angle glaucoma
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Angle closure glaucoma• Severe pain• Decreased peripheral vision • Presence of halos around lights• Fixed mid-dilated pupil• Tonometry reveals elevated intraocular
pressure• Treatment : IV mannitol , acetazolamide,
laser iridotomy for cure
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Cataract • Lens opacity• Blurred vision ,progressive over months or
years• No pain or redness• Treatment :surgery
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Macular degeneration• Age-related • Painless loss of visual acuity• Dx by altered pigmentation in macula• No Tx , but patient often retains adequate
peripheral vision
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Retinal detachment• Blurred vision in one eye becoming w0rse ( “
a curtain came down over my eyes”)• No pain or redness• Detachment seen by ophthalmoscopy• Tx = urgent surgical reattachment
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OTITIS EXTERNA• Presents with otalgia• Pruritus• Purulent discharge• h/o recent water exposure or mechanical
trauma• Examination reveals : erythema and edema of
the ear canal and pulling on pinna or pushing on tragus cause pain
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• Pseudomonas is usual cause• Treatment: I.Protection of the ear from additional
moisture II.Otic drops containing a mixture of
aminoglycoside antibiotic and anti-inflammatory corticosteroid( eg. Neomycin sulfate , polymyxin B , and hydrocortisone
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Malignant External otitis• Persistent external otitis in the diabetic• Caused by pseudomonas aeruginosa• May evolve into osteomyelitis of the skull
base• Presents with persistent foul aural discharg,
granulations in the ear canal ,deep otalgia, progressive cranial nerves palsies
• CT confirmed the dx by demonstrating of osseous erosion
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Treatment • Medical : antipseudominal antibiotic often
for several months• Surgical debridement
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Acute Otitis Media• Bacterial infection of the mucosally lined air-
containing spaces of the temporal bone.• Precipitated by a viral upper respiratory tract
infection.• Most common in infant and children• Most common pathogens : streptococcus
pneumonia, haemophilus influenzae and streptococcus pyogenes
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Patient presents with otalgia, aural pressure, decreased hearing and fever.
Typical findings : erythema and decreased mobility of the tympanic membrane.
Treatment:First –choice antibiotic either amoxicillin or
erythromycin.Amoxicillin-clavulanate useful alternative
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Vertigo SyndromesA. Benign positional vertigo • Sudden,episodic vertigo with head
movement lasting for seconds.• Treatment : hallpike maneuver B. Viral labyrinthitis• Prececed by viral respiratory illness• Vertigo lasting days to weeks• Treatment : meclizine
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Meniere’s disease• Dilation of membrane labyrinth due to excess
endolymph• Characterized by classic triad :hearing loss,
tinnitus and episodic vertigo lasting several hours.
• Treatment : thiazide, anticholinergic or surgery
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Acoustic neuroma• CN VIII schwannoma commonly affects
vestibular portion but can also affect cochlea.
• Patient presents with : vertigo, sudden deafness and tinnitus.
• Dx = MRI of cerebellopontine angle• Tx = local radiation or surgical erection
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EPISTAXIS• Bleeding from Kiesselbach’s plexus, a
vascular plexus on the anterior nasal septum.• Predisposing factors :a.Nasal trauma (nose picking, foreign bodies,
forceful nose blowing)b.Rhinitis, drying of the nasal
mucosa ,deviation of the nasal septum, alcohol , bone spurs, antiplatelet medication.
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Treatment = direct pressure, topical nasal constriction (phenylephrine 0.125-1% solution), consider anterior nasal packing if unable to stop.
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SINUSITIS• Result of impaired mucociliary clearance
and obstruction of the osteomeatal complex. Edematous mucosa causes obstruction of the sinus drainage tract, resulting in the accumulation of mucous secretion in the sinus cavity that becomes secondarily infected by bacteria.
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A . Acute sinusitis• Patient presents with : purulent rhinorrhea,
headache, pain on sinus palpation,fever, halitosis.
• Most common pathogens : S. pneumoniae, H. influenzae, Moraxella catarrhalis.
• Tx : Bactrim , amoxicillin, decongestants
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B. Chronic sinusitis• Same clinical presentation as for acute.• Lasts longer > 3 months• Common pathogens : Bacteroides, Staph.
Aureus, Pseudomonas , Streptococcus spp.• Dx = CT scan showing inflammatory changes
or bone destruction.• Tx = surgical correction of obstruction , nasal
steroids• Complication : meningitis, abscess
formation,orbital infection,osteomyelitis
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PHARYNGITISA. Group A Strep throat• High fever• Severe throat pain w/o cough• Edematous tonsils with white or yellow
exudate• Unilateral cervical adenopathy
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DiagnosisI.H&P 50 % accurateII.Rapid antigen testIII.Throat swab culture is gold standard• Tx: penicillin to prevent acute rheumatic
fever
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Membranous ( diphtherial )I.High fever II.DysphagiaIII.Drooling can cause respiratory failureDx : pathognomonic gray membrane on
tonsils extending into throatTx : Antitoxin
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• Fungal (candida)I.Dysphagia II.Sore throat with white ,cheesy patches in
oropharynx (oral thrush)seen in AIDS and small children
III.Dx : clinical or endoscopyIV.Tx : nystatin ,clotrimazole
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AdenovirusI.FeverII.Red eyeIII.Sore throatIV.Dx : clinicalV.Tx : supportive
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Herpangina ( coxsackie A)I.FeverII.PharyngitisIII.Body acheIV.Tender vesicles along tonsils, uvula and soft
palateV.Dx : clinicalVI.Tx : supportive