Orbital cellulitis Flashcards
1
Q
Def
A
It is the acute infection of the orbital soft tissue posterior to the orbital septum
2
Q
Etiology
A
Staph aureus
Strep pneumoniae
Strep pyogenes
H influenzae
3
Q
Modes of infection
A
Trauma Injury,foreign body, blow out fracture Extension of infection from paranasal sinus and periorbital tissue Sinus disease Infection of adjacent structures Endogenous infection (bacteremia) Post surgical retinal lacrimal orbital Endophthalmitis
4
Q
Symptoms
A
Pain swelling malaise fever
5
Q
Signs
A
Fever Orbital and lid edema Conjunctival chemosis that may protrude and become dessicated Proptosis obscured by swelling EOM restricted by swelling Optic nerve dysfunction
6
Q
Investigation
A
CBC ESR
Orbital ultrasonography
X ray PNS CT MRI
7
Q
Medical
A
Hospitalized
Antibiotics
Analgesics
Topical antibiotics
8
Q
Surgical
A
Drainage of abscess
9
Q
Complications
A
Exposure keratopathy Optic neuropathy Raised IOP Occlusion of central retinal artery Blindness
10
Q
Orbit complications
Intracranial complications
A
Subperiosteal abscess
Orbital abscess
Cranial nerve palsies
Meningitis
Brain abscess
CVT
