ENT Flashcards
What is the last sinus to develop?
Frontal
**Ego Means SelF
= Ethmoid - Maxillary - Sphenoid - Frontal
Tell me when the sinuses develop.
Ego means SelF
= Ethmoid= air @ birth
= Maxillary= present at birth; air @ 4
= Sphenoid= present at 5
= Frontal= start @ 7-8 but not fully done till teens
Most common long-term sequelae associated with congenital CMV?
Hearing loss
T or F: kids with congenital CMV can pass newborn hearing test.
True!
50% will pass but develop loss later.
What is the leading cause of acquired hearing loss?
Bacterial meningitis
Please list min. 5 non-infectious RF for neonatal sensorineural hearing loss.
Preg: *in utero infectxn (i.e. CMV) Post Natal - Apgar 0-4 @ 1 min or 0-6 @ 5min - *BW < 1500 g - *Craniofacial anomalies (involving external ear) - NICU > 2d - *ECMO - mechanical vent 5+ days - *ototoxic meds (gent, tobra), diuretics (lasix) - *hyperbili needing exchange PMHX - *congenital bacterial meningitis - *syndromes: NF, Alport, Jervell and Lange-Nielson syndromes - Neurodegenerative (Hunter) - Sensory motor neuropathies (Charcot-Marie Tooth Syn) - Recurrent or persistent AOM x 3 mon. Meds: chemo HPI: *trauma, noise level Development: GDD, SLP delay FHX: *fhx of permanent hearing loss
1.5 year old boy with sudden fall with normal LOC that has nystagmus. What is dx?
Benign Paroxysmal Vertigo
Associated: Migraines.
What is vertigo?
rotation or spinning component
T or F: true vertigo is associated with LOC.
False
- No LOC
- association= N/V, pallor, diaphoresis
Do you teens have benign paroxysmal or position vertigo?
Positional!
Paroxysmal usually resolve by 6 y.o.
How can you tell peripheral or central vertigo?
Central= constant, any direction nystagmus, neuro signs
List common reasons for acute vertigo:
- AOM
- benign paroxysmal vertigo (1-2 y.o.; short period; may get migraine later, tx gravol symptoms)
- benign positional vertigo (~6 y.o., free debris in canal, sudden vertigo btwn episodes)
- labyrinthitis (infection of inner ear; infection preceding; resolve over day)
- vestibular neuritis (teens; after resp infection; postural imbalance w/ ear pain)
- basilar artery migraine (teen F; episodic vertigo; h/a after)
List reasons for chronic vertigo:
- NF2 neuromas
- posterior fossa tumours
- meds: aminoglycosides
- cerebral infarct
- MS (demyelinating process)
- endo/metabolic (DM, thyroid)
What test must all people with vertigo undergo?
Hearing test.
What maneuver can you do for Benign POSITIONAL vertigo?
Epley test.
How do you treat vertigo?
Symptomatic if no RED flags
- If persistent= W/U
- If neuro= imaging
- If LOC= EEG
Most recover w/out intervention over wk-months.
What is the most objective test for middle ear effusion?
Tympanometry.
Fluid= non compliant TM = flattened tympanogram tracing. Test limited by pt cooperation.
Does not distinguish btwn OME vs. AOM.
Facial nerve is which cranial nerve?
7
Most common causes of facial nerve palsy?
AOM
Bell’s palsy
Lyme disease
List 3 congenital causes of facial nerve palsy
CONGENITAL
1. Congenital Traumatic (LGA, forcep, prem)
- Moebius syndrome (CN 7 and 6)
- Asymmetric crying facies (loop-sided lip)
List 3 acquired causes of facial nerve palsy
ACQUIRED
- Tumour or Trauma
- cholesteatoma
- CA invasion
- Basal skull # - Infection
- chronic AOM
- parotitis or mastoiditis
- Bell’s palsy (whole side)
- Ramsay Hunt Syn (Herpes Zoster)
- Lyme disease - Systemic
- sarcoidosis (esp if bilateral)
- MS
- Hyperthyroidism
What is the most common cause of unilateral facial weakness?
Bell’s Palsy
CC: usually abrupt loss of control + sensation on one side
~2 wk after infection
Dx of exclusion
Tx: steroids +/- valacyclovir
Describe the Ramsay Hunt Triad:
- Ipsilateral facial palsy
- Ear pain
- Vesicles (auditory canal, palate, tongue)
How do you tell the difference btwn central vs. peripheral lesions causing facial palsy?
Central =
- contralateral side from lesion
- spare upper 1/2 of face (wrinkle forehead)
* see wkness if ask “show your teeth”
Describe areas you look at when assessing palsy?
- Forehead + Brow (lose mvmt)
- Eyes (can’t close or drooping or eyelid)
- Nasolabial folds (lost)
- Lip (drooping)
Tx of facial palsy:
Corticosteroids (prednisone x 1 week w/ taper)
+/- Antiviral (valacyclovir if severe or Ramsay Hunt)
PT EBM unclear
Surgical: rare
Remember: If can’t close their eyes= artificial tears w/ ophthalmic ointment + patch at night
What is the prognosis for Bell’s Palsy?
Excellent
> 85% full recovery (95% in some sources)
What is the consequence of withholding treatment x 48hr in child w/ AOM?
Prolonged duration of overall symptoms (including fever)
NOT: pain, mastoiditis
Give three indications for tympanostomy tubes.
- Recurrent AOM with MEE (middle ear effusion)
- OME + symptoms (hearing loss or school behav)
- OME (otitis media w/ effusion) > 3 month (w/ hearing loss or symp or high risk pop’n)
High risk pop’n: ASD, T21, cleft palate, DD, blind, craniofacial abnormalities, SLP delay, permanent hearing loss
- Hammer: B/L OME > 3 mon. + conductive hearing loss
- Hammer: other uncommon (complications of AOM like mastoiditis, lack of med tx response, chronic retraction of TM)
How do you diagnose AOM?
- Acute Symptoms
- otalgia, irritability - Middle Ear Effusion
- immobile TM or otorrhea - Significant middle-ear inflammation
- bulging TM
- discoloured TM
List risk factors for AOM
- orofacial anomalies (i.e. cleft palate)
- short duration of BF
- prolonged bottle feeding while supine
- household crowding
- exposure to cig smoke
- (+) FHX AOM
- First Nations or Inuit
Other CPS: young age, pacifier use, low IgA, CF
When do you do watchful waiting in AOM?
Min 6 mo. old \+ Well (no immuno, cardiac, pul., T21) \+ Mild (fever < 39, mild pain) \+ do not meet full criteria = wait x 48 hr
If not improve or worsen = Tx
When do you treat AOM?
Unwell
OR febrile (min. 39) + mod-severe or severe otalgia
OR min. 48hr wait
= Tx
Note: AAP also says < 2 y.o. w/ bilateral to treat.
What are risk factors for Abx resistant S. pneumonia for AOM (which is why we do high dose)?
< 2 y.o.
daycare
frequent/recent (w/in 3 mo.)
failed initial Abx
Which Abx can you use for AOM?
- Amoxicillin 90 divided BID
- Amox-Clav
- amox in last 30 days
- If unimmunized
- AOM + purulent conjunctivitis as more likely H. influx + M. catarrhalis - Cefprozil or Cefuroxime
- non IgE rxn
- Note only Ceftriaxone if PO not tolerated or Amox-Clav fail - Clarithromycin or Azithro x 5d
- IgE Rxn - Clindamycin
- IgE Rxn (not as good w/ s. pneumonia or H. Influ)
How long do you treat AOM for?
5 DAY= > 2 y.o. = 5 day
10 DAY = < 2 or frequent or perf TM or failed initial Tx
List some serious complications of AOM?
- *Mastoiditis
- Sub-periosteal abscess
- Facial Nerve Palsy
- Venous Sinus Thrombosis
- Meningitis
Other: labyrinthitis, Bezold’s absces, * cholesteatoma etc.
How do you treat AOM w/ tube otorrhea
Ciprodex (steroids + Abx)
How do you treat AOM + perf TM/otorrhea
PO Amox x 10 d
When do you refer a perforated TM to ENT?
Does not heal in 6 wk
- heal usually w/out intervention
- keep out water + cotton tips
- eval hearing
List three possible Abx for a pt w/ AOM treated with Clarithro a few weeks ago for resp infection.
- high dose amox
- amox-clav
- cefuroxime or cefprozil
How do you prevent AOM?
- Hygiene (reduce virus)
- Exclusive BF until min. 3 mon (reduce chance for 4-12 mo. after BF ceases)
- Avoid pacifier
- No smoking
- Pneumococcal conjugate vaccine for all as per schedule.
- Recommend annual flu vaccine.
When do you suspect primary ciliary dyskinesia?
PCD= immotile cilia syn; AR dx
50% situs inversus= Kartagener’s Syn
- chronic or recurring URTI or LRTI
- bronchiectasis of RML or lingula
- chronic AOM
- rhinosinusitis
- nasal polyps
- heterotaxy (TGA common)
- infertility
Consider: CXR, CT lung, PFT
Dx: nasal nitric oxide (low in PCD), nasal bx (ciliary motion)
Most common cause of epistaxis?
picking the nose
List a brief list of aetiologies for epistaxis:
- trauma (nose picking, acute facial trauma causing septal hematoma)
- rhinitis
- sinusitis
- FB
- polyp, tumours
- vascular malformations/telangiectasia
- bleeding dx (vWF, hemophilia)
- irritant (Smoke)
- meds (anticoag, NSAID, topical corticosteroids)
How do you manage epistaxis
- Sit child upright
- Tilt head fwd
- compress nare x 5-10 min.
- cold compress to nose
if does not work
- oxymetazole
- anterior pack + cauterize site
- tx underlying coagulopathy
When do you refer to ENT for epistaxis?
- b/l nasal bleeding
- posterior hemorrhage (not from Kiesselbach plexus)
How do you prevent epistaxis?
Humidify + Lubricate!
- humidifier
- nasal saline drops
- vaseline to septum
What is Otrivin?
Oxymetazoline= vasoconstrictor
- nose bleed
- topical decongestant for rhinitis
- only use max 3-5d
What is rhinitis medicamentosa?
= Rebound nasal rhinitis after Otrivin
= rebound nasal hypertrophy, congestion, inflam.
- resolve in 1-2 wk
- can use IN steroids to tx
What is obstructive sleep apnea?
Sleep disruption
+ Hypoxemia
+ Daytime symptoms