Weber Test
The vibrating tuning fork is placed on the vertex (forehead or teeth)
Normal ear hears in the midline
In neural loss, vibration is heard on the healthy side (lateralized to the healthy side)
In conductive loss, the patient lateralizes to the ear.
Its purpose is to distinguish between neural and conductive loss.
Normal ear hears in the midline
In neural loss, vibration is heard on the healthy side (lateralized to the healthy side)
In conductive loss, the patient lateralizes to the ear.
Its purpose is to distinguish between neural and conductive loss.
Schwabach Test
The patient's bone path is compared with the physician's bone path. Normal or prolonged Schwabach test is called
NOTE
Frequency: The number of vibrations per second or the number of waves per unit of time.
The higher the number of vibrations in a time period, the higher the sound, and the lower the frequency, the quieter the sound.
The normal hearing human ear detects sounds between 16 Hz and 20000 Hz.
Daily speech is in the range of 400-3000 hz
Sudden Hearing Loss
It is sensorineural hearing loss that occurs in less than 12 hours.
Factors affecting prognosis
Severity of hearing loss
Pattern of hearing loss on the audiogram (raising-falling between frequencies)
vertigo
Age
It is usually unilateral
Reasons
viral infections
Meningitis
Lyme
syphilis
acquired immunodeficiency syndrome (AIDS)
acoustic trauma
ototoxic drugs
acoustic neuroma
multiple sclerosis
sarcoidosis
head trauma
Meniere's disease
Vascular: Labyrinth artery embolism, thrombosis, spasm or hemorrhages
Autoimmunity: Occurs with antigen-antibody complexes in the perilymph.
In treatment, high-dose steroids and hyperbaric oxygen are given.
NOTE
Most common cause of congenital deafness - - Genetics (OR) (Connexing-26)
Most common congenital VIRAL deafness - - - CM V
Most common cause of acquired unilateral deafness - - - Mumps
Syndrome most common cause of congenital deafness - - - Pendred syndrome
İŞİTME KAYBI TİPLERİ
Cochlear Implant
It is performed when hearing aids are not sufficient to provide hearing and speech.
Indications
Children who have not passed the age of learning to speak (4-5 years)
Adults with up to 100% bilateral hearing loss
Contraindications
Narrow meatus acousticus internus (8th CN)
Michel's aplasia (absence of the cochlea)
Cochlear ossification (sequelae of late meningitis)
The patient's bone path is compared with the physician's bone path. Normal or prolonged Schwabach test is called
NOTE
Frequency: The number of vibrations per second or the number of waves per unit of time.
The higher the number of vibrations in a time period, the higher the sound, and the lower the frequency, the quieter the sound.
The normal hearing human ear detects sounds between 16 Hz and 20000 Hz.
Daily speech is in the range of 400-3000 hz
Sudden Hearing Loss
It is sensorineural hearing loss that occurs in less than 12 hours.
Factors affecting prognosis
Severity of hearing loss
Pattern of hearing loss on the audiogram (raising-falling between frequencies)
vertigo
Age
It is usually unilateral
Reasons
viral infections
Meningitis
Lyme
syphilis
acquired immunodeficiency syndrome (AIDS)
acoustic trauma
ototoxic drugs
acoustic neuroma
multiple sclerosis
sarcoidosis
head trauma
Meniere's disease
Vascular: Labyrinth artery embolism, thrombosis, spasm or hemorrhages
Autoimmunity: Occurs with antigen-antibody complexes in the perilymph.
In treatment, high-dose steroids and hyperbaric oxygen are given.
NOTE
Most common cause of congenital deafness - - Genetics (OR) (Connexing-26)
Most common congenital VIRAL deafness - - - CM V
Most common cause of acquired unilateral deafness - - - Mumps
Syndrome most common cause of congenital deafness - - - Pendred syndrome
İŞİTME KAYBI TİPLERİ
Cochlear Implant
It is performed when hearing aids are not sufficient to provide hearing and speech.
Indications
Children who have not passed the age of learning to speak (4-5 years)
Adults with up to 100% bilateral hearing loss
Contraindications
Narrow meatus acousticus internus (8th CN)
Michel's aplasia (absence of the cochlea)
Cochlear ossification (sequelae of late meningitis)
Rinne Test
Compares the airway with the bone conduction
Normal ear is Rinne positive
The sound continues to be heard when the tuning fork is held to the external ear canal when its vibration on the mastoid ends.
Rinne is negative in conduction loss.