Block 1 - HENT Exam Flashcards
Describe purpose, procedure, and findings of Weber test regarding auditory acuity
Purpose: Assess unilateral hearing loss
Procedure: Place 512Hz tuning fork on middle of head, ask pt if sound heard bilaterally or better in one ear, (if one is) cover one ear and occulded ear should sound better.
Findings: Should be bilateral; if lateralization occurs - conductive hearing loss if sound heard better in bad ear, sensorineural hearing loss if sound heard better in good ear.
Describe purpose, procedure, and findings of Rinne test regarding auditory acuity
Purpose: Distinguish if pt hears better by air or bone conduction
Procedure: Place 512Hz tuning fork against pt’s mastoid bone, ask if sound is heard, when no longer heard move by ear, when no longer heard record time.
Findings: Positive - AC>BC in 2:1 ratio; conductive hearing loss - BC>AC on affecte side; sensorineural hearing loss - AC>BC but less than 2:1 ratio
Describe procedure and findings of gross hearing test regarding auditory acuity
Proceure: Occlue pt’s untested ear, stand out of vision, whisper word with 2 syllables, have pt repeat word, repeat on other side.
Findings: Failure could indicate hearing loss.
Describe purpose and procedure of audiogram regarding auditory acuity
Purpose: Used to show the amount of hearing loss individual has for each ear. Graphical display - frequency (Hz) vs intensity of sound (dB).
Procedure: Continuous and interrupted tons presented at various frequencies. Hearing threshold - softest tone which person can hear recorded by audiogram.
Describe the difference between sensorineural hearing loss and conductive hearing loss
Sensorineural hearing loss: Any type of damage from cochlear hair cells beyond (eg CN VIII) - eg noise-induced hearing loss, old age, genetics, head injuries. Marked by loss of high-frequency sounds. Permanent.
Conductive hearing loss: Any obstruction or defect or interference with mechanism of sound transmission (ear infections, fluid in middle ear, abnormal bone growth, cerumen impaction, TM perforation). Not permanent - usually fixed with surgical or medical intervention.
Discuss the otoscope
Used for illumination of external auditory canal and tympanic membrane. Select largest size that will fit in pt’s ear.
Discuss the insuffilator
Provides information about tympanic membrane mobility and middle ear space.
Discuss the transilluminator
Used to examine sinuses. Helps differentiate presence of media in cavity (air, fluid, tissue).
Describe normal dentition in the adult
Most adults have 32 permanent teeth. 2I, 1C, 2PM, 3M, bilaterally and superiorly and inferiorly.
Define and describe septal deviation
Nasal septum is displaced to one side making one nasal passage smaller. This can reduce airflow causing breathing difficulty.
Define and describe nasal polyp
Boggy, dependent mucosa that is round and elongated which projects into nasal cavity - tissue blockage of nasal passageway.
Define and describe rhinitis/rhinorrhea
Inflammation or irritation of nasal passages, “runny nose,” nasal congestion, and/or postnasal drainage. Can be seasonal or accompany sickness.
Define and describe otorrhea
Often purulent discharge from the ear
Define and describe effusion
Loss of fluid from the blood vessels or lymphatics into the tissue or a body cavity. Edema, pain, and tension in area of build up.
Define and describe retraction of tympanic membrane
Concave, accentuated bony landmarks, distored light reflex.