Ch. 14 HEENT, Dental Flashcards
What is the treatment for septal hematoma?
- anesthetize the septum
- make elliptical incision in the mucosa overlying the hematoma (be careful not to incise the cartilage)
- evaluate clot with pressure or suction
- place small penrose drain into the incision
- pack both nostrils
follow up ENT in 48 hrs
Why is it important to drain septal hematomas?
untreated–» abscess, necrosis, and septal perforation
Which muscle is most commonly entrapped in orbital floor fractures?
inferior rectus muscle – limits upward gaze
What clinical exam can be performed to test for mandibular fracture?
Tongue blade test: The ability to maintain the bite on a tongue blade being twisted with enough force that it cracks has a negative predictive value of 95% for mandibular fracture
What recommendations should you make after mandibular reductions?
Avoid extreme jaw opening for 3 weeks, soft diet, nonsteroidal anti-inflammatory drugs (NSAIDs) for pain, and OMS follow-up in 1-3 days
What is a “tripod” fracture of the face?
classic fracture pattern involving the zygoma, the lateral orbital wall, and the maxilla
Which nerve supplies maxillary teeth?
dentoalveolar nerve; can be injured in tripod fractures
What are sinus precautions?
Avoid:
- blowing your nose
- exercise or bending over, straining, sneezing.
If you have to sneeze, do so with your mouth open.
- avoid straws or suction.
What classification system describes mid-face fractures?
Le Fort
Define Le Fort I
Unilateral or bilateral fracture through the inferior maxilla just above the roots of the teeth
Define Le Fort II
Bilateral pyramidal fracture extending superiorly from the maxilla through the orbital floor and rim, medially through the lacrimal bones, and across the nasal bridge
Define Le Fort III
Rare injury with fractures spreading laterally from the nasal bridge
through the medial wall, floor, and lateral wall of the orbit and then the zygoma resulting in complete craniofacial dissociation
■ Intranasally, the fracture extends posteriorly to the sphenoid and is frequently
associated with a cerebrospinal fluid (CSF) leak.
What is the treatment for Le Fort fractures?
- airway protection
- prophylactic abx – augmentin or clindamycin
- urgent OMFS consultation
What is the treatment for auricular hematoma?
<2cm – needle aspiration
>2cm – I&D
THEN pressure dressing with daily follow-up
What are symptoms of vestibular neuritis?
Continuous vertigo
+/- hearing loss (if cochlear branch is involved)
What causes BPPV?
calcium debris (otoconia) within the semicircular canals of the inner ear
What causes Menieres?
An idiopathic excess of fluid in the endolymphatic spaces of the inner ear
What is the classic triad of Menieres?
Sensorineural hearing loss, peripheral vertigo, tinnitus
What is the treatment for Menieres attacks?
Antiemetics, antihistamines (eg, meclizine), and benzodiazepines for acute attacks.
What are long term recommendations for patients with Menieres?
low-sodium diet,
diuretics,
smoking and caffeine cessation,
and
chemical ablation of vestibular function with aminoglycosides
in extreme cases.
What two organisms most commonly cause otitis externa?
pseudomonas and staph aureus
What is furunculosis of the ear canal?
a well-circumscribed infection of the cartilaginous portion
of the external canal caused by S. aureus that requires incision and drainage and oral antibiotics
Ramsay-Hunt Syndrome or herpes zoster oticus is due to reactivation of herpes zoster in the ___ ganglion.
geniculate
What is the treatment for Ramsay Hunt Syndrome?
acyclovir or valacyclovir
What is the treatment for otitis externa if TM is intact?
PolymyxinB/neomycin/hydrocortisone or
ciprofloxacin/hydrocortisone.
+ topical anesthestics
What is the treatment for otitis externa if the TM is perforated?
UTD says topical fluoroquinolone (ciprofloxacin)
If you suspect otitis externa but you see granulation tissue at the floor of the canal, what should you be concerned for?
necrotizing (malignant) otitis externa
What organism is responsible for necrotizing otitis externa?
pseudomonas aeruginosa
What is the treatment for necrotizing otitis externa?
Admission for iV antibiotics (unless nontoxic, then may treat with oral ciprofloxacin for 6-8 weeks with ENT referral)
What is bullous myringitis?
AOM with formation of bullae on the TM and medial canal wall
What is the treatment for acute otitis media?
> 80% of cases resolve spontaneously
- in children >6months okay to do watchful waiting for 48 hours
then Amoxicillin is first line
if tubes then add topical oflaxcin or ciprofloxain (to cover for pseudomonas)
In what population is mastoiditis most common?
children <2 years old
What is the most common organism attributed to mastoiditis?
s. pneumonia
What is the treatment for mastoiditis?
ceftriaxone or clindamycin
+/- surgical drainage
What physical exam test can be used to test for conductive hearing loss?
Rinne test
What physical exam test can be used to evaluate sensorineural hearing loss?
Weber test
What is the treatment for sudden hearing loss?
treat cause, otherwise..
oral steroid for 10-14 days and ENT follow up
What is a cholesteatoma?
An accumulation of epithelial cells resulting from chronic Eustachian tube dysfunction or middle ear infection with retraction of the TM that can lead to bone erosion of the middle ear.
WHat are the signs/symptoms of cholesteatoma?
Recurrent or persistent purulent otorrhea with hearing loss is common.
■ Whitish mass of epithelial debris may be visible behind the TM.
What is the treatment of cholesteatoma?
reverse underlying process– ie treat infection, improve eustachian tube dysfunction
What are examples of Ototoxic agents?
■ Aminoglycosides
■ Loop diuretics
■ Salicylates (usually chronic toxicity)
■ Erythromycin
■ Quinine and related drugs
■ Chemotherapeutics
What is the most common cause of TM perforation?
otitis media
What is the treatment for TM perforation?
■ Keep ear dry; provide analgesia and topical antibiotic suspension if contaminated
or at risk for contamination.
■ Most (90%) heal within a few months, but should follow-up with ENT.
How can lacerations medial to the medial canthus be evaluated for lacrimal system injury?
instill fluorescein into the eye and see if dye is present in the wound
For chemical exposures to the eye, how long should you irrigate?
At least 30 minutes; or longer– use pH paper and irrigate until pH of eye tear is 7.0
Are steroids indicated in UV keratitis?
No
What is the treatment for chemical eye injuries?
topical steroids (with
ophthalmology consultation),
cycloplegics,
artificial tears, and
antibiotic ointment (eg, erythromycin) along with oral pain medication.
What is the treatment for corneal abrasions/injuries?
topical NSAIDs (eg, ketorolac 0.5% qid) or oral analgesics
+
topical antibiotics (eg, erythromycin ointment qid)
if contact wearer –> Levofloxacin (for pseudomonal coverage)
What is the treatment after corneal foreign body removal?
topical NSAIDs, oral analgesics, and topical antibiotics
What is the treatment for globe rupture
- shield eye immediately
- pain control, antiemetics
- tdap and abx – Vanc +Ceftazidime
- Optho consult
What do you call a blood collection in the anterior chamber?
hyphema
What is the treatment of hyphema?
eye shield, elevate HOB to 30’, antiemetics
optho consult – additional meds per optho ie timolol, systemic glucocorticoids, cyclopentolate, dorzolamide, mannitol, surgery
What is iritis and/or iridocyclitis?
inflammation of the iris and ciliary body
What are symptoms of iritis?
recent hx of blunt trauma
deep aching eye pain
photophobia
What are physical exam findings of iritis?
small, poorly dilating pupil with perilimbal conjunctival injection (ciliary flush)
cell and flare in the anterior chamber on slit lamp exam
What is the treatment of iritis?
■ Long-acting mydriatics/cycloplegics (eg, homatropine) for symptom control
and to prevent synechiae
■ Ophthalmology follow-up; generally resolves within 1 week
What do you call a fibrovascular proliferation that extends, generally from the nasal side of sclera, onto the cornea?
pterygium
What is the treatment for pterygium?
Surgical removal if interfering with vision
What are risk factors for pterygiums?
sun exposure (“surfer’s eye”),
low humidity, and dust
What do you call a yellowish patch on conjunctiva near limbus that does not grow or extend onto cornea?
Pinguecula
What is the difference between a pterygium and pinguecula?
Pterygium extends onto the cornea,
pinguecula does not
What is the treatment for pinguecula?
Artificial tears to prevent dryness. Topical steroids if acutely inflamed (pingueculitis)
What is the most common cause of viral conjunctivitis?
Adenovirus
What do you call inward turning of the eyelid?
entropion
In developing countries, what infection may cause a follicular conjunctivitis with entropion?
Trachoma – chlamydial conjunctivitis (non-sexual serotypes)
What do you call conjunctivitis occurring within the first month of life?
Ophthalmia neonatorum
What is the most likely etiology of Ophthalmia neonatorum in the first 1-2 days after birth?
chemical causes, from ointment applied postdelivery
What is the most likely etiology of Ophthalmia neonatorum in the first 2-5 days after birth?
Gonorrhea
What is the most likely etiology of Ophthalmia neonatorum in the first 5-14 days after birth?
chlamydia (most common) - culture to dx
What is the most likely etiology of Ophthalmia neonatorum in the first 1-2 weeks after birth?
HSV – culture to dx
What is the treatment for Ophthalmia neonatorum caused by chemicals?
no treatment
What is the treatment for Ophthalmia neonatorum caused by Gonorrhea?
saline washes, ceftriazone IM, topical abx drops (eg polymyxin-bacitracin)
also treat for chalmydial infections