Q.

Which is INCORRECT regarding investigation of SAH?

A. Non contrast CT becomes less sensitive with time following bleed.
B. 5-10% of patients with negative CT will have SAH.
C. Presence of xanthochromia is the gold standard for diagnosing SAH on LP.
D. Xanthochromia is present in all patients with SAH at 6 hrs post bleed.
E. MRI angiography is not reliable enough to use for diagnosis and surgical planning of patients with proven SAH.
Answer» D. Xanthochromia is present in all patients with SAH at 6 hrs post bleed.

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Neurological

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