Otorrino 2 Flashcards
In the audio logic testing, what structures does physiologic measures evaluate?
Middle ear, cochlear and retro cochlear status
What test does physiologic measures has?
- otoacoustic emissions testing for peripheral auditory status (OAE)
- Tympanometry
- acoustic reflex
What does electrophysiologic testing evaluates
Peripheral auditory function and auditory nervous system function
Involuntary Reflex caused by a strong contraction of the stapedius muscle, which is detonated by loud noises in order to protect the ear
Acoustic or stapedius reflex
Three tests that audiologic testing comprises, and which ones are behavioral and objective
Behavioral tests: hearing sensitivity, and speech recognition like audiometry
Objective tests: physiologic measures en electrophysiologic, for example, tympanometry, acoustic reflex, auditory brainstem, response, etc.
Introduction of noise to the non-test ear during a pure tone Audiogram with white noise to prevent crossover, usually done to identify asymmetric hearing loss 
Masking
Test in which you put the patient in a Cavan to measure volume and frequency starting on the healthiest year
Puretone audiogram
Symbols of the audiogram
Right - red
< - bone conduction
O - air conduction
Left - blue
> - bone conduction
X - air conduction
Bone conduction can be below the air conduction on the audiometry
Force bone conduction must be above air conduction
How to classify the audiometry based on the hearing loss patterns
Conductive
AC >25
BC <25
ABG >10
Sensory neural
AC >25
BC >25
ABG <10
Mixed
AC >25
BC >25
ABG >10
How do you classification the magnitude of hearing loss and how many types are there?
Base of the Puretone average adding the threshold where is the AC symbol, falls in 500 1000 and 2000 Hz and dividing by 3
Mild 25 to 40
moderate 40 to 55
Moderate severe 55 to 70
Severe 70 to 90
Profound more than 90 
What type of pathologies can cause a conductive hearing loss
otitis media, earwax, Tim panic membrane rupture, foreign body 
What type of pathologies can calls sensory neural hearing loss
Presbiacusy, ototoxicity, tumors, trauma
This test represents the lowest intensity, at which the patient can correctly repeat half of the spondaic words or other speech, stimuli
Speech audiometry
Types of test done in pediatric patients for audiology testing
<6 months: behavioral observation audiometry
6 months - 2.5 years: visual reinforcement audiometry
2.5 to 4 years: play audiometry
Test that measures of movement of the membrane by sealing the ear canal, pumping air and causing movement 
Tympanometry 
Normal tympanometry threshold’s
DaPa > -50
MmHg 0.5-1.3
Types of tympanometry patterns
Type A = sensorineural HL
Normal parameters
Type As = otoesclerosis
DaPa normal
mmHg <0.5
Type Ad = osicular chain luxation
DaPa normal
mmHg >1.3
Type B = otitis media/conductive HL y perforación
DaPa x
mmHg x
Type C = eustaquian tube disfunction (adenoid, rhinitis)
DaPa < -50
mmHg normal
Nerve In Charge Of Moving stapedius muscle and, tympanic muscle
Stapedius- facial nerve
Tympanic - trigeminus
Where is the place where the vestibular nerve crosses in the brain stem
Medial superior olive nucleus 
Causes of an absent acoustics reflex threshold
Conductive hearing loss
Sensory neural hearing loss above 50 dB
Nerve lesion
Stapedius lesion
Acoustic admittance testing is useful for the detection of middle ear, effusion in pediatric population. True or false
True
Screening test used to track the movement of the outer cells. Useful in detection of hearing disorders, ototoxicity and retro cochlear pathology.
Oto acoustic emissions
Anatomical site, which contains the tectorial membrane that causes the movement of the Celia, particularly external cilia
Corti organ
Tool for recording the very early latency vote potential’s from the cochlea and distal auditory nerve
Electrocochleograpgy
Test in which you put an electrode before head over there in the mastoid to measure evoked potential. Useful in babies, patients with palsy, autism, that can’t cooperate with audiometry. 
Auditory brainstem response
Parts of the pinna
Helix
Antihelix
Anti-tragus
Tragus
Lobule
Narrowest point of the external ear canal
Bony cartilaginous Junction
First third is cartilage and the second and third is bony structure
Ear epithelium
Stratified squamous
Which one of the following nerves doesn’t give innervation to the ear
Trigeminal facial Vegas, spinal or great auricular nerve
Spinal
Artery that gives irrigation to the medial ear canal and timpani membrane
Maxillary artery
Unilateral malformation’s present at birth classified with the Marx system
Microtia 
What grade of microtia that’s no recognizable landmarks of the pinna and has a peanut shape
3
Grade of microtia, when there’s a mild deformity, with a dysmorphic helix, and anti-helix
1
The absence of the external ear is called
Anotia or grade 4 microtia
Which type of hearing loss do patients with microtia present
Conductive hearing loss detected with auditory brainstem response
Is caused by the lack of antihelix fold in prominence of concha bowl
Protruding ears
Neck masses among the branchial, cleft anomalies associated with infection, and present with pain and swelling
First branchial Cleft anomalies
Accumulation of blood in the subpericondral space secondary to blunt trauma
Auricular hematoma
Pathology the presents with otalgia, otorrhea, hearing loss and tragus sign
Often caused by pseudomonas and S Aureus
Otitis externa
Inflammatory process of the EAC due to infection with fungi
Otomicosis
Pathology that presents usually with facial palsy, Otorrhea
In the otoscopy, you can see a granulation tissue
Skull base osteomielitis
Hypersensitivity that causes contact dermatitis
Type 4
Most common malignant neoplasm in the ear
Basal cell carcinoma 
Growth of the lamellar bone common in surfers
Exostosis
The middle ear cleft comprises 3 contiguous components:
eustachian tube,
the tympanic cavity (middle ear)
the mastoid air cells (antrum is the biggest cell)
Mucosa inflammation in absence of effusion caused by an infection which causes bulging
* Upper respiratory infection prior
* Otoscopy: Hyperemia, Purulent secretion posterior to the membrane
* Fever
ACUTE OTITIS MEDIA
common pathogens for otitis media
H. Influenzae, S. Pneumoniae, Moraxella catharalis
Intracranial OM complications
4
- Meningitis
- Otitic hydrocephalus
- Abscess
- Sigmoid sinus thrombophlebitis
Increased intracranial pressure secondary to AO or OME.
* Headaches, lethargy, and papilledema
* no meningeal signs or evidence of intracranial abscess
Otitic hydrocephalus
OM complication in which Patients present classically with diurnal or “picket fence” fever curves, septicemia, and torticollis.
Sigmoid sinus thrombophlebitis
OM complications (no intracraneal)
5
- Tympanic perforation
- Mastoiditis - Bezold abscess (sternocleoidmastoid)
- Petrous apicitis- Gradenigo syndrome
- Facial nerve palsy - indicator of tx with tympanostomy tubes
- Labyrinthitis - mixed hearing loss and Vertigus