2) EENT Flashcards
(47 cards)
Tx of blepharitis
Lid scrub w/ baby shampoo on q-tips
topical abx if infection is suspected
Blowout fx presentation
(fx of orbital floor max, pal, zygo)
-inability to look up (entrapment of infraorbital nerve and musculature)
-swelling and misalignment of eyes
-double vision
Tx: Ophthalmology (decongest, ice packs, cold compresses, abx)
Cataract presentation
- insidious onset of decreased vision
- dbl vision, fixed spots, reduced color perception
- ext = discoloration of lens
- int = cataract appears black on red background
tx: intracapsular or extracapsular extractions of cataract w/ lens replacement
Viral conjunctivitis cause
Adenovirus type 3, 8, 19
can be transmitted in swimming pools
-tender lymphadenopathy & watery d/c
Tx: eye lavage w/ normal saline bid; compresses
Bacterial conjunctivitis cause
s. pneumo, s. aureus, h. aegyptius and moraxella species
-copious purulent d/c
Tx: topical abx (ex: ciprofloxacin)
Rare pathogens in bacterial conjunctivitis
Chlamydia (no organism on stain) & gonorrhea (gram neg diplococci)
- sever conjunct and keratitis w/ develo perm vision loss
- tx: systemic abx (ceftriaxone/doxy)
Follow up on corneal abrasions
within 1-2 days is essential
Corneal ulcer tx
Eye specialist immediately
HSV=dendritic, s. aureus
Hyphema tx
refer to optham asap (risk for more hemorrhage)
how long is it ok to patch an eye for?
up to 24h
What is glaucoma?
Increased IOP w/ optic nerve damage
Open Angle Glaucoma
Chronic, asymptomatic potentially blinding dz
- defects in PERIPHERAL vision
- increased disc to cup ratios
tx: refer to optham (topical or systemic rx to decrease IOP)
Angle Closure Glaucoma
Painful eye, loss of vision
circumlimbal injection, steamy cornea, fixed mid-dilated pupil
-nausea, vomiting, diaphoresis
Tx: opthalmic emergency (start IV carbonic anhydrase inhibitor, topical beta blocker and osmotic diuresis)
Leading cause of irreversible central visual loss
Macular Degeneration
Macular Degeneration
- Causes: age related, choloroquine or phenothizine
- Drusen on buch’s membrane
- Mottling, serous leaks, hemorrhages on the retina
- NO EFFECTIVE TX
Central Retinal ARTERY occlusion
-sudden, painless, marked unilateral loss of vision
-emoblic, thrombotic, vasculitides
-arteriolar narrowing, box-carting, retinal edema, perifoveal atrophy (cherry red spot), gangioloinc seat heads to optic atrophy and pale retina
Tx: Opthalm Emergency w/ poor prognosis regardless if tx immediately
Central Retinal VEIN occlusion
-sudden, U/L, painless blurred vision or complete vision loss
-Causes: secondary to thrombic event
-afferent pupillary defect and bood and thunder retina
AKA: dilated veins, hemorrhages, edema, exudates
-vision is typical resolved w/ time, at least partially
Retinal Detachment
Causes: spontaneous, secondary to trauma, extreme myopia
-acute onset of blurred or blackened vision that occurs over several hours and progress to complete or partial monocular blindness (curtain being drawn over eye)
-floaters or flashing lights at initiation of sump
-relatively afferent pupillary defect
-rgous retina flapping in the vitreous humor
Tx: opthalm emergency
Leading cause of blindness in adults in US
Diabetic retinopathy (yearly dilate eye exam)
Prolif diabetic retinopathy
-neovascularization, vitreous hemorrhage
Non prolif diabetic retinopathy
-venous dilation, microaneurysms, retinal hemorrhages, retinal edema, hard exudates
Tx of diabetic retinopathy
Optimized clusoe control, regulation of BP, laser photocoag, vitrectomy
Optic Neuritis
Occurs in 15-40 y/o
- idiopathic but 20-50% develop MS
- globe is tender, visual field defects, altered color vision
Orbital cellulitis
More common in kids than adults (7-12y/o)
- sinusitis, dental infections, facial infections, infection of the globe or eyelids, ing of lacrimal system)
- s. pneumo, s. aureus, h. influ, gram neg bact
- PTOSIS, EYELID EDEMA, EXOPTHALMOS, PURULENT D/C AND CONJUNCTIVITIS
- FEVER, DECREASE ROM OF EYE MUSCLES AND SLUGGISH PUPILLARY RESPONSE
tx: medical emergency (hospitalization and IV abx)