ears, nose, mouth, throat assessment - Sheet1 Flashcards
What is the primary function of the ear?
The ear is the sensory organ for hearing and equilibrium, with the semicircular canals providing balance information to the brain about body position.
What are the three divisions of the ear?
External ear, middle ear, and inner ear.
What separates the external ear from the middle ear?
The tympanic membrane (eardrum), which is oval, translucent, and pearly-gray.
What is the function of the middle ear?
Conducts sound vibrations from the outer ear to the central hearing apparatus in the inner ear.
What is the role of the Eustachian tube?
Connects the middle ear to the nasopharynx, allowing equalization of air pressure on both sides of the tympanic membrane. The tube is normally closed but opens with swallowing or yawning.
How does the Eustachian tube differ in infants/children compared to adults?
It is shorter and more horizontal, making it easier for pathogens to move from the nasopharynx to the ear, which increases the risk of ear infections in infants and children.
What is the appearance of a healthy tympanic membrane?
Oval, translucent, and pearly-gray.
What part of the ear provides information about balance to the brain?
The semicircular canals in the inner ear.
What assessments are important when examining the tympanic membrane?
Check color, shape, and position; a healthy membrane is pearly-gray, translucent, and positioned in the center without bulging or retraction.
Why might infants and young children experience more frequent ear infections?
The shorter, more horizontal Eustachian tube in children allows easier access for pathogens from the nasopharynx to the middle ear.
What subjective data should be gathered during an ear assessment?
Earaches, infections, discharge, hearing loss, environmental noise, tinnitus (ringing), vertigo (spinning), and self-care behaviors (e.g., use of Q-tips, applying sunblock to ears).
What are common indicators of hearing loss observed during conversation?
Lip reading or face-watching, frowning or straining to hear, head posturing, frequently asking to repeat questions, irritability or startle reflex when speaking loudly, speech sounds garbled, inappropriately loud voice, or flat tone.
What are normal findings during external ear inspection?
Ears are equal in size, symmetrical, skin color matches the face, no swelling, lumps, lesions, or drainage.
What is noted during palpation of the ear?
No tenderness or deformity; palpation of the pinna, tragus, and mastoid process should be painless.
How is the ear positioned when using an otoscope in adults and children under 3 years?
For adults: pull pinna up and back. For children under 3 years: pull pinna down.
What are you looking for in the external ear canal during otoscope inspection?
Note any redness, swelling, lesions, foreign bodies, or discharge.
What does a normal tympanic membrane (TM) look like?
Shiny, translucent, pearly-gray color with a cone-shaped light reflex (5 o’clock position in right ear, 7 o’clock in left ear), with no perforations or discoloration.
What does a perforated tympanic membrane indicate?
Indicates an abnormal finding; perforations are not normal and may suggest trauma or infection.
What are signs of otitis media observed in the tympanic membrane?
The TM may appear yellow or amber, suggesting fluid behind the membrane, or it may be red, indicating inflammation.
How is the whisper test conducted?
Stand about 2 feet behind the person, whisper a combination of numbers or letters, and ask them to repeat it. Use if conversational hearing seems normal; no additional testing if whisper test is passed.
How should an otoscope be handled during an ear exam?
Hold it upside down and anchor your hand on the person’s cheek to prevent sudden movements and avoid forceful insertion. Use the largest speculum that comfortably fits the ear canal.
What are abnormal findings related to skin conditions on the ears?
Eczema (crusts and scaling), decubitus ulcers (from oxygen tubing), lumps, or lesions.
What is tinnitus?
Ringing or roaring noise in the ear.