HMC Mason Review Flashcards
Thermal receptors located where?
Epidermis and dermis
Cold receptors are located where?
Epidermis (dermis warm receptors)
Nociceptors are located everywhere except?
Brain
Muscles spindles do what?
Inform which muscle is contracting
Joint kinesthetic does what?
Inform the position of our joints while doing work
The olfactory tract projects smell to where in your brain?
Cerebral cortex (frontal and temporal lobe)
Which portion of the brain is responsible for emotional response to odors?
Limbic system
What cranial nerves are involved with taste and the taste buds?
CN VII & IX
Exophthalmus is associated with what?
Hyperthyroidism
Which CN’s innervate movement of the eye?
CN 3 (occulomotor), CN 4 (trochlear), CN 6 (abducens)
CN 3 controls which muscles of the eye?
Controls the levator palpebrae superior is (which elevates and retracts the upper eyelid). Controls superior, inferior, medial rectus muscles and the inferior oblique muscles
CN 4 controls which muscles of the eye?
superior oblique muscle
CN 6 controls which muscles of the eye?
Controls the lateral rectus muscle.
What color light is used for fluorescein staining
Cobalt blue
How long do you flush eyes?
15-30 min
Complication of auricular hematoma?
Cartilage necrosis or cauliflower ear
How to treat cauliflower ear?
Incision and drainage/ Aspiration > Topical antibiotics
What is the temperature of water for ear irrigation?
Body/room temp
Most common cause of Cholesteatoma?
Prolonged Eustachian tube dysfunction
How to treat Cholesteatoma?
Surgical marsupialization of the sac or its complete removal.
What do you use for foreign bodies in ear?
Loops and scoops
How do you remove living foreign body in ear?
Lidocaine
When do you not irrigate the ear?
Don’t irrigate ear if can’t see TM
Complication of foreign bodies?
Perforated TM, Hearing loss, Cellulitis
What are the 2 types of Eustachian tube dysfunction?
Classified as a patulous dysfunction, in which the Eustachian tube is excessively open, or dilatory dysfunction, in which there is failure of the tubes to dilate appropriately.
How to treat Eustachian tube dysfunction?
Treat underlying cause/ reduce infection/inflammation (Sudafed, Afrin)
Hearing loss begins at what?
High frequencies
. What are causes of hearing loss?
Machinery, weapons, headphones
What is the treatment for hearing loss?
Take out of environment. Do audio if needed.
Mastoiditis is caused by what?
Otitis media
What bacteria is associated with Otitis Media?
Most common pathogens are Streptococcus pneumoniae, Haemophilus influenzae, and Streptococcus pyogenes.
How do you treat otitis externa?
Neomycin/Polymyxin B plus hydrocortisone
How do you treat otitis media?
Amoxicillin. Ceftriaxone if PCN allergy.
How do you treat mastoiditis?
Ceftriaxone 2g every 24 hours
Bacteria associated with acute otitis externia?
The most common of which are Pseudomonas
aeruginosa (20% to 60%) and Staphylococcus aureus (10% to 70%).
Treatment for otitis externa?
Neomycin/Polymyxin B plus hydrocortisone
Otitis externa can lead to what?
Otitis media
Otitis media is normally caused by what
URI
Most common pathogens of Otitis media?
Most common pathogens are Streptococcus pneumoniae, Haemophilus influenzae, and Streptococcus pyogenes.
How do you treat Otitis media including allergy to PCN?
Amoxicillin or Augmentin. PCN allergy= Ceftriaxone or Doxy
Complications of otitis media are what?
Mastoiditis or cholesteastoma
Complications of mastoiditis?
Destruction of bony septa. Spread of infection.
What causes to tinnitus and what happens to the hair cells?
If hairs are damaged, they may move randomly, sending electrical impulses to your brain as noise, or tinnitus. Tinnitus can also be caused by turbulence in the carotid artery or jugular vein, and temporomandibular joint problems.
Where does perforated TM most commonly occur?
Pars tensa
TM perforations occur secondary to what?
Barotrauma per review. TM perforations can occur secondary to middle-ear infections or as a result of barotrauma, blunt/penetrating/acoustic trauma, or, on rare occasions, lightning strikes.
How do you treat TM perforation?
Spontaneous resolve
What’s the most common nose bleed?
Acute, unilateral bleeding from the anterior nasal cavity
Where do anterior nose bleeds most commonly come from?
Kiesselbach’s Plexus
How do you treat a nose bleed? What’s the last resort? When do you need antibiotics?
Direct pressure by compression of the nares continuously for 15 minutes. Nasal decongestant. Topical decongestant (Afrin). Last resort is nasal packing or cauterization. Packing should be left in place for 48 hours and the patient should be placed on oral antibiotics.
Nasal polyps are associated with what?
Asthma, allergies
How do you treat polyps?
Corticosteroids (Flonase)
How do they look in nose?
Pale, most commonly semitransparent, edematous, mucosally covered masses.
What bone in nose is most common broken?
The nasal pyramid
Complication of nasal trauma?
Septal hematoma
How do you treat nasal trauma?
Tylenol, ENT if displaced
Does everyone need antibiotics?
Nope
When do you treat sinusitis with antibiotics?
When over 10 days symptomatic
How do you treat sinusitis?
Augmentin or amoxicillin (Augmentin per review) Amoxicillin-Clavulanate
Treatment for epiglottitis?
Ceftizoxime (Rocephin), 2 g IV every 8-12 hrs
What may have a wrinkled “wet finger” appearance?
Leukoplakia
Cause of leukoplackia
Smoking, alcohol, dentures
Pt has muffled hot potato voice?
PTA
How do you treat?
Ceftriaxone 2g IV QD + Metronidazole 500mg IV q6h
How do you do needle aspiration?
With a 19 to 21-gauge needle passed medial to the molar and no deeper than 1cm due to the internal carotid artery lays laterally and posterior to the posterior edge of the tonsil.
Another name for tonsillitis?
Step throat
What is CENTOR criteria?
Fever over 38 degrees Celsius;Tender anterior cervical lymphadenopathy; Lack of a cough; Pharyngotonsillar exudates
What is used for centor criteria used for?
strep
What’s the treatment for strep?
Benzathine penicillin (Bicillin) - a Penicillin class antibiotic. Dose: 1.2 million units IM (only 1 dose)
Most common organism for Sialadenitis?
Most common organism recovered from purulent draining saliva is S aureus
What’s the treatment for sialadentitis
IV Antibiotics Nafcillin 2gm IV QD. MEDEVAC
Where do tonsilloliths most occur?
Occur most commonly in the palatine tonsils
Most common cause of barotrauma?
Flying
How do you treat orbital fracture on ship?
Augmentin
. How do you teat orbital cellulitis?
Augmentin
HypopyonHypopyon is associated with what?
Corneal ulcers and Uveitis/Iritis.
Treatment for auricular hematoma?
I & D
Sounds like underwater is what?
Eustachian tube dysfunction
Dendritic lesions are associated with what?
Herpetic lesions of eye
Do you patch ulcers?
No
A blowout fracture is associated with what?
Affects the floor or inner wall of the orbit
Before you do anything with the eye you do what?
Visual acuity