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Clinical scenario
A 32-year-old woman presented to the emergency department (ED) with a history of occipital headache and intermittent blurred vision for the past 3 weeks. D-dimer performed on admission is within normal range. Can you safely rule out cerebral venous sinus thrombosis (CVST)?
Three-part question
In (patients presenting to and ED with suspected CVST) does a (normal D-dimer) rule out this condition?
Search strategy
NICE Healthcare interface Medline 1966–November 2016
[ddimer.ti,ab] AND [exp INTRACRANIAL EMBOLISM/OR exp INTRACRANIAL THROMBOSIS/OR exp SINUS THROMBOSIS, INTRACRANIAL/OR exp CAVERNOUS SINUS THROMBOSIS/OR exp INTRACRANIAL EMBOLISM AND THROMBOSIS/OR exp LATERAL SINUS THROMBOSIS/OR exp SAGITTAL SINUS THROMBOSIS/OR (cerebral AND venous AND sinus AND thrombosis).ti,ab/OR (sinus AND thrombosis).ti,ab] AND [exp DIAGNOSIS/OR …
Footnotes
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent Not required.
Provenance and peer review Not commissioned; internally peer reviewed.
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