Which of the following statements regarding the management of bacterial orbital cellulitis is NOT correct?
A. During hospitalization, some tests should be performed, such as white cell count, blood culture, CT of the orbit, and a biopsy is always needed.
B. Orbital CT is particularly useful to exclude a subperiosteal abscess.
C. We should do a lumbar puncture if meningeal or abnormal neurological signs develop.
D. Surgical intervention in which the infected sinuses and orbital collections are drained should be considered in the following circumstances: lack of response to antibiotics, subperiosteal or intracranial abscess.
How do you treat a patient with bacterial orbital cellulitis?
A. immediate hospitalization, with ENT assessment and frequent ophthalmic review
B. started on broad-spectrum IV antibiotics immediately
C. closely monitor optic nerve function, every 4 hours by testing pupillary reactions, visual acuity, color vision and light brightness appreciation
D. all of above
Which of the following statements regarding the complications of bacterial orbital cellulitisis NOT correct?
A. The complications of orbital cellulitis include ocular and intracranial problems, and subperiosteal abscess.
B. For ocular complications we may find exposed corneal ulcers, raised IOP, occlusion of retinal artery or vein, endophthalmitis and optic neuropathy.
C. Subperiosteal abscess is most frequently located along the lateral orbital wall.
D. Intracranial complications, which are rare but extremely serious, include meningitis, brain abscess and cavernous sinus thrombosis.
Which of the following statements regarding the investigations of bacterial orbital cellulitis is NOT correct?
A. Orbital CT can show preseptal and orbital opacification, which indicates the protruding eyeball, the swollen orbital soft tissue, and the blurred orbital outline.
Blood test shows increased WBC, mainly lymphocytes
C. A diffusion-weighted MRI shows high intensity in the cavernous sinus.
D. Ultrasound examination shows enhanced echo and thickened extraocular muscle.
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