Cavernous sinus thrombosis: Difference between revisions
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''The cavernous sinus is one of the several cerebral veins and cavernous sinus thrombosis is a specific type of [[cerebral venous thrombosis|cerebral venous (sinus) thrombosis]]. See that article for a discussion of the larger clinical entity.'' | ''The cavernous sinus is one of the several cerebral veins and cavernous sinus thrombosis is a specific type of [[cerebral venous thrombosis|cerebral venous (sinus) thrombosis]]. See that article for a discussion of the larger clinical entity.'' | ||
== Background | == Background == | ||
*Severe infection involving complications of paranasal sinus and facial infections (e.g. manipulated midface abscesses, furuncles) | *Severe infection involving complications of paranasal sinus and facial infections (e.g. manipulated midface abscesses, furuncles) | ||
*Frequent extension of thrombosis to opposite sinus | *Frequent extension of thrombosis to opposite sinus | ||
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**Internal Carotid Artery | **Internal Carotid Artery | ||
=== Causes | === Causes === | ||
*[[Staph aureus]] | *[[Staph aureus]] | ||
*[[Strep pneumoniae]] | *[[Strep pneumoniae]] | ||
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*[[Fungi]] | *[[Fungi]] | ||
== Clinical Features | == Clinical Features == | ||
*Fevers, chills, N/V, headache | *Fevers, chills, N/V, headache | ||
*Eye exam | *Eye exam | ||
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*If infection spreads into CNS: AMS, lethargy, meningeal signs | *If infection spreads into CNS: AMS, lethargy, meningeal signs | ||
== Differential Diagnosis == | == Differential Diagnosis== | ||
*Aneurysmal dilation/rupture of internal carotid artery in cavernous sinus | *Aneurysmal dilation/rupture of internal carotid artery in cavernous sinus | ||
*[[Cellulitis]] | *[[Cellulitis]] | ||
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*Blood Cx | *Blood Cx | ||
== Treatment | == Treatment == | ||
*IV antibiotics: | *IV antibiotics: | ||
**3rd generation cephalosporin and: | **3rd generation cephalosporin and: | ||
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*Surgical drainage of primary infection if possible | *Surgical drainage of primary infection if possible | ||
== Disposition | == Disposition == | ||
*Consult ophthalmology, neurology, ID, surgery specialty (if drainage is needed) and admit ICU | *Consult ophthalmology, neurology, ID, surgery specialty (if drainage is needed) and admit ICU | ||
== Complications | == Complications == | ||
*[[Meningitis]] | *[[Meningitis]] | ||
*Septic emboli | *Septic emboli | ||
Revision as of 23:28, 4 July 2016
The cavernous sinus is one of the several cerebral veins and cavernous sinus thrombosis is a specific type of cerebral venous (sinus) thrombosis. See that article for a discussion of the larger clinical entity.
Background
- Severe infection involving complications of paranasal sinus and facial infections (e.g. manipulated midface abscesses, furuncles)
- Frequent extension of thrombosis to opposite sinus
- Low frequency, but high rate of morbidity/mortality
- Structures within the Cavernous Sinus
- V1 and V2
- III, IV, VI
- Internal Carotid Artery
Causes
Clinical Features
- Fevers, chills, N/V, headache
- Eye exam
- infraorbital/periorbital cellulitis
- Exophthalmos (uni/bl)
- Decreased vision
- Absent pupillary reflexes
- Decreased EOM secondary to CN III, IV, VI
- CN VI typically affected 1st causing lateral gaze palsy
- Decreased corneal sensation secondary to CN V
- If infection spreads into CNS: AMS, lethargy, meningeal signs
Differential Diagnosis
- Aneurysmal dilation/rupture of internal carotid artery in cavernous sinus
- Cellulitis
- Periorbital vs Orbital Cellulitis
- Acute Angle-Closure Glaucoma
- Sinusitis
Diagnosis
- MRI with MR Venogram - study of choice
- CT head/orbits with IV contrast
- CT findings can be subtle and if clinical suspicion is high cannot rule out if neg CT
- Blood Cx
Treatment
- IV antibiotics:
- 3rd generation cephalosporin and:
- Nafcillin or vancomycin/linezolid if suspected MRSA and
- Anaerobic coverage if suspected dental source
- Consider heparin if rapidly decompensating and CT neg for intracranial hemorrhage
- Consider steroids to decrease inflammation in conjunction with antibiotics
- Surgical drainage of primary infection if possible
Disposition
- Consult ophthalmology, neurology, ID, surgery specialty (if drainage is needed) and admit ICU
Complications
- Meningitis
- Septic emboli
- Remaining visual defects
- CNS deficit
- pituitary insufficiency