Periorbital/Preseptal and orbital cellulitis Flashcards
Periorbital refers to tissues infront of the septum. Orbital cellulitis refers to tissues behind the orbital septum. Cellulitis refers to an infection. Which of the following is NOT involved in preseptal cellulitis?
1 - eyelids
2 - muscles of the eye
3 - skin
4 - subcutaneous tissue of the face
2 - muscles of the eye
In all suspected cases of preseptal or orbital cellulitis, which of the following should always be asked in the history?
1 - recent sinusitis
2 - insect bites
3 - infected lid lesions
4 - history of trauma
5 - all of the above
5 - all of the above
What is the incidence of preseptal cellulitis?
1 - 1 cases per 100,000
2 - 10 cases per 100,000
3 - 100 cases per 100,000
4 - 1000 cases per 100,000
2 - 10 cases per 100,000
Equally as common in males and females
What age does the incidence of preseptal cellulitis peak at?
1 - 6-15 years
2 - 20-35 years
3 - 40-60 years
4 - >65 years
1 - 6-15 years
Is preseptal or orbital cellulitis more serious?
- orbital cellulitis
Orbit has no lymph nodes, so no immune system
Offers a direct passage through to the brain
Preseptal cellulitis typically is caused by an break in the skin, sinusitis, or respiratory tract infection that spreads to the structures surrounding the orbit. All of the following organisms can causes this, but which is the most common cause?
1 - Staphylococcus aureus
2 - Staphylococcus epidermidis
3 - streptococci
4 - anaerobic bacteria
1 - Staphylococcus aureus
Patients typically present with all of the following in preseptal cellulitis, EXCEPT which one?
1 - acute onset of pain
2 - pain upon moving the eye
3 - red eye
4 - swollen eye
5 - fever like symptoms
2 - pain upon moving the eye
Common in orbital cellulitis, but not preseptal cellulitis
Can ptosis (drooping of the eyelid) occur in preseptal cellulitis?
- yes
Can be complete or partial depending on the swelling of the eyelids
Which of the following diagnostic tests would NOT typically be performed in preseptal cellulitis?
1 - blood inflammatory markers
2 - swab of eye
3 - blood cultures
4 - CT with contrast of eye
5 - clinical examination
4 - CT with contrast of eye
ALWAYS performed in orbital cellulitis, but not preseptal cellulitis
All of the following are likely differentials for preseptal cellulitis, but which is most likely?
1 - allergic reaction
2 - orbital cellulitis
3 - trauma
4 - thyroid eye disease
2 - orbital cellulitis
Do patients with preseptal cellulitis always need to be referred to secondary care?
- yes
Important to rule out orbital cellulitis
In preseptal cellulitis, how are patients treated typically?
1 - topical antibiotics
2 - debridement and washout
3 - oral antibiotics
4 - wait and see
3 - oral antibiotics
Typically amoxicillin
What is the most concerning complication of preseptal cellulitis?
1 - scarring
2 - rhinitis
3 - orbital cellulitis
4 - conjunctivitis
3 - orbital cellulitis
What is the incidence of orbital cellulitis?
1 - 1 cases per 100,000
2 - 10 cases per 100,000
3 - 100 cases per 100,000
4 - 1000 cases per 100,000
1 - 1 cases per 100,000
What age does the incidence of orbital cellulitis peak at?
1 - 6-15 years
2 - 20-35 years
3 - 40-60 years
4 - >65 years
1 - 6-15 years