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Anatomy of the ear.

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Presentation on theme: "Anatomy of the ear."— Presentation transcript:

1 Anatomy of the ear

2 1-Vertigo 2-Deafness

3 1- Physiological 2- Pathological
Vertigo Vertigo is hallucination of movement 1- Physiological 2- Pathological

4 Physiology of balance

5 Physiology of balance

6 Pathology Causes: A- Central: B- Peripheral: Stroke Migraine
Multiple Sclerosis Cerebrum degeneration Head injury. Meningitis. Brain abscess B- Peripheral: Vestibular lesion Visual lesion Somatosensory lesion

7 1- Benign Paroxysmal Positional Vertigo (BPPV)
A- Vestibular lesion 1- Benign Paroxysmal Positional Vertigo (BPPV) Most common Causes, it may develop after: * Ear infection * Ear surgery * Head injury: Prolonged bed rest for ex. while recovering from an illness Pathophysiology: Otolith in the posterior semicircular cannal (canalolithiasis) Clinical Picture: Sudden vertigo in certain head position No hearing loss Latent period Fatigable on reposition

8 Repositioning (Epley manouvor)
Treatment of BPPV Repositioning (Epley manouvor)

9 2- Vestibular Neuronitis Causes: Viral Clinical picture:
A- Vestibular lesion 2- Vestibular Neuronitis Causes: Viral Clinical picture: Vertigo – lasting days No hearing loss No other neurological signs or symptoms Nystagmus – horizontal Treatment: Only Symptomatic: Vestibular sedation (Betaserc) Antiemetics

10 3- Menier’s Disease (Endo lymphatic hydropes)
A- Vestibular lesion 3- Menier’s Disease (Endo lymphatic hydropes)

11 Treatment: Possible treatments include:
3- Menier’s Disease Causes: Unknown Clinical picture: Vertigo – the sensation that you, or the environment around you, is moving or spinning Tinnitus – hearing sounds from inside your body, rather than from an outside source Hearing loss, with a particular difficulty hearing deep or low sounds Sense of pressure or fullness deep inside the ear Treatment: Possible treatments include: Dietary advice, particularly a low-salt diet Medication: Betahistine (Betaserc) for treatment and prevention Treatment called vestibular rehabilitation to cope with balance problems Surgery

12 Hearing Loss 1-Conductive External auditory meatus ….wax Middle ear Tympanic membrane Perforation Otitis media Ossicular disconnection

13 Normal tympanic membrane

14 Perforation of tympanic membrane

15 Otitis Media Acute Chronic

16 2-Sensorineural Deafness
a-Developmental &Hereditary b-Infectious … otitis media c-Toxicity …. aminoglycoside d-Trauma ….Head injury ....Noise induced

17 e-Neurologic disorder
….Multiple sclerosis f-Immune disorders ….Polyarteritis g-Bone disorders ….Paget ,s Disease i-Neoplasms .…Acoustic neuroma

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