patients with hearing and balance disorders
DESCRIPTION
Mrs. Yniesta's notesTRANSCRIPT
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Chapter 59
Assessment and Management of Patients with Hearing and
Balance Disorders
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Anatomy of the EarAnatomy of the Ear
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Anatomy of the Inner EarAnatomy of the Inner Ear
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Bone Conduction Compared to Air Conduction
Bone Conduction Compared to Air Conduction
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Assessment Assessment
• Inspection of the external ear
• Otoscopic examination
• Gross auditory acuity
• Whisper test
• Weber test
• Rinne test
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Technique for Using an Otoscope Technique for Using an Otoscope
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Weber TestWeber Test
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Rinne TestRinne Test
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Speech DiscriminationSpeech Discrimination
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Diagnostic EvaluationDiagnostic Evaluation
• Audiometry
• Tympanogram
• Auditory brain stem response
• Electronystagmography
• Platform posturography
• Sinusoidal harmonic acceleration
• Middle ear endoscopy
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Hearing LossHearing Loss
• Affects more than 28 million people in the U.S.
• Increased incidence with age: presbycusis
• Risk factors include exposure to excessive noise levels: see Chart 59-3
• Types
– Conductive: due to external middle ear problem
– Sensorineural: due to damage to the cochlea or vestibulocochlear nerve
– Mixed: both conductive and sensorineural
– Functional (psychogenic): due to emotional problem
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ManifestationsManifestations• Early symptoms include:
– Tinnitus: perception of sound; often “ringing in the ears”
– Increased inability to hear in a group
– Turning up the volume on the TV
• Impairment may be gradual and not recognized by the person experiencing the loss
• As hearing loss increases, patients may experience deterioration of speech, fatigue, indifference, social isolation, or withdrawal; for other symptoms see Chart 59-2
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Guidelines for Communicating With the Hearing Impaired
Guidelines for Communicating With the Hearing Impaired
• Use a low-tone, normal voice
• Speak slowly and distinctly
• Reduce background noise and distractions
• Face the person and get his attention
• Speak into the less-impaired ear
• Use gestures and facial expressions
• If necessary, write out the information or use a sign language translator
• See Chart 59-4
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Conditions of the External EarConditions of the External Ear
• Cerumen impaction
– Removal may be by irrigation, suction, or instrumentation
– Gentle irrigation should be used with lowest pressure, directing stream behind the obstruction
Glycerin, mineral oil, half-strength H2O2 or peroxide in glyceryl may help soften cerumen
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Conditions of the External Ear (cont.)Conditions of the External Ear (cont.)
• Foreign bodies
– Removal may be by irrigation, suction, or instrumentation
– Objects that may swell (such as vegetables or insects) should not be irrigated
– Foreign-body removal can be dangerous and may require extraction in the operating room
• External otitis
– Inflammation is most commonly due to the bacteria staphylococcus or pseudomonas, or to fungal infection due to Aspergillus
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Conditions of the External Ear (cont.)Conditions of the External Ear (cont.)• External otitis (cont.)
– Manifestations include pain and tenderness, discharge, edema, erythema, pruritus, hearing loss, and feelings of fullness in the ear
– Therapy is aimed at reducing discomfort, reducing edema, and treating the infection
– A wick may be inserted into the canal to keep it open and to facilitate medication administration
• Malignant external otitis: rare, progressive infection that effects the external auditory canal, surrounding tissue, and the skull
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Conditions of the Middle EarConditions of the Middle Ear
• Tympanic membrane perforation
• Acute otitis media
– Most frequently seen in children
– Pathogens are most commonly Streptococcus pneumonia, Haemophilus influenzae, and Moraxella catarrhalis
– Manifestations include otalgia (ear pain), fever, and hearing loss
– Treatment
Antibiotic therapy
Myringotomy or tympanotomy
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Conditions of the Middle Ear (cont.)Conditions of the Middle Ear (cont.)
• Serous otitis media: fluid in the middle ear without evidence of infection
• Chronic otitis media
– Result of recurrent acute otitis media
– Chronic infection damages the tympanic membrane and ossicle, and involves the mastoid
– Treatment
Prevent by treatment of acute otitis
Tympanoplasty, ossiculoplasty, or mastoidectomy
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Middle Ear Surgical ProceduresMiddle Ear Surgical Procedures
• Tympanoplasty
– Reconstruction of the tympanic membrane
• Ossiculoplasty
– Reconstruction of the bones of the middle ear
– Prostheses are used to reconnect the ossicles to reestablish sound conduction
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Middle Ear Surgical Procedures (cont.)Middle Ear Surgical Procedures (cont.)
• Mastoidectomy
– Removal of diseased bone, mastoid air cells, and cholesteatoma to create a non-infected, healthy ear
– Cholesteatoma: a benign tumor that is an ingrowth of skin that causes persistently high pressure in the middle ear, causing hearing loss, neurologic disorders, and destroying structures
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Stapedectomy for OtosclerosisStapedectomy for Otosclerosis
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Nursing Process—Assessment of the Patient Undergoing Mastoid SurgeryNursing Process—Assessment of the Patient Undergoing Mastoid Surgery
• Health history
• Include data related to the ear disorder, hearing loss, otalgia, otorrhea, and vertigo
• Medications
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Nursing Process—Diagnosis of the Patient Undergoing Mastoid Surgery
Nursing Process—Diagnosis of the Patient Undergoing Mastoid Surgery
• Anxiety
• Acute pain
• Risk for infection
• Disturbed auditory sensory perception
• Risk for trauma related to imbalance or vertigo
• Disturbed sensory perception related to damage to facial nerve
• Impaired skin integrity
• Deficient knowledge
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Nursing Process—Planning the Care of the Patient Undergoing Mastoid Surgery
Nursing Process—Planning the Care of the Patient Undergoing Mastoid Surgery
• Major goals include: – Reduction of anxiety – Freedom from pain and discomfort – Prevention of infection – Stable or improved hearing and communication – Absence of vertigo and injury
– Absence of or adjustment to altered sensory perception, return of skin integrity
– Increased knowledge of disease – Surgical procedure and postoperative care
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InterventionsInterventions• Reduce anxiety
– Reinforce information and patient teaching
– Provide support and allow patient to discuss anxieties
• Relieve pain
– Medicate with analgesics for ear discomfort
– Occasional sharp, shooting pains may occur as the eustachian tube opens and allows air into the middle ear; constant throbbing pain and fever may indicate infection
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Interventions (cont.)Interventions (cont.)
• Prevent injury
– Implement safety measures such as assisting with ambulation
– Provide antiemetics or antivertigo medications
• Improve communication and hearing
– Hearing may be reduced for several weeks following surgery due to edema, accumulation of blood and fluid in the middle ear, and dressings and packings
– Use measures to improve hearing and communication as discussed in “Communicating With the Hearing Impaired”
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Interventions (cont.)Interventions (cont.)
• Preventing infection
– Monitor for signs and symptoms of infection
– Administer antibiotics as ordered
– Prevent contamination of ear with water from showers, washing hair, etc.
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Patient TeachingPatient Teaching
• Medications teaching; analgesics and antivertigo medications
• Activity restrictions
• Gently blow nose on only one side at a time; sneeze and cough with mouth open
• Patient may need instruction to avoid heavy lifting, exertion, and nose blowing to prevent dislodgement of grafts or prostheses
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Patient Teaching (cont.)Patient Teaching (cont.)
• Safety issues related to potential vertigo
• Instruction regarding potential complications and reporting of problems
• Avoid getting water in ear
• Follow-up care
• See Chart 59-6
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Conditions of the Inner EarConditions of the Inner Ear
• Disorders of the vestibular system affect more than 30 million in the U.S.; falls resulting from these disorders result in 100,000 hip fractures a year
• Dizziness: any altered sense of orientation in space
• Vertigo: the illusion of motion or a spinning sensation
• Nystagmus: involuntary rhythmic movement of the eyes associated with vestibular dysfunction
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Conditions of the Inner Ear (cont.)Conditions of the Inner Ear (cont.)
• Tinnitus
• Labyrinthitis
• Benign positional vertigo (BBPV)
• Ototoxicity: see Chart 59-9
• Acoustic neuroma: tumor of cranial nerve VIII
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Ménière’s DiseaseMénière’s Disease
• Abnormal inner ear fluid balance caused by malabsorption of the endolymphatic sac or blockage of the endolymphatic duct
• Manifestations include fluctuating, progressive hearing loss; tinnitus; feeling of pressure or fullness; and episodic, incapacitating vertigo that may be accompanied by nausea and vomiting
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Ménière’s Disease (cont.)Ménière’s Disease (cont.)
• Treatment
– Low-sodium diet, 2000 mg a day: see Chart 59-7
– Meclizine (Antivert), tranquilizers, antiemetics, and diuretics
– Surgical management to eliminate attacks of vertigo; endolymphatic sac decompression; middle and inner ear perfusion; and vestibular nerve sectioning