Subarachnoid haemorrhage (SAH): investigations

Evidence-based neurology checklist on subarachnoid haemorrhage (sah): investigations: Cerebrospinal fluid (CSF) analysis This is done at least 12 hours after symptom onset It shows xanthochromia: this is detectable up to 2 weeks after the event Cytology may help in late presentations Plain…

Cerebrospinal fluid (CSF) analysis

  • This is done at least 12 hours after symptom onset
  • It shows xanthochromia: this is detectable up to 2 weeks after the event
  • Cytology may help in late presentations

Plain computerised tomography (CT)

Computerised tomography angiography (CTA)

Digital subtraction angiography (DSA)

References

  1. van Gijn J, Rinkel GJ. Subarachnoid haemorrhage: diagnosis, causes and management. Brain 2001; 124:249-278. 
  2. Müller-Jensen L, Diamandis E, Osterloh A, Ruprecht K, Leithner C. Cerebrospinal fluid cytology in subacute subarachnoid hemorrhage. Neurology 2020; 95:699-700. 
  3. Maramattom BV, Wijdicks EFM. Arrow sign in MCA trifurcation aneurysm. Neurology 2004; 63:1323. 
  4. Prestigiacomo CJ, Sabit A, He W, Jethwa P, Gandhi C, Russin J. Three dimensional CT angiography versus digital subtraction angiography in the detection of intracranial aneurysms in subarachnoid hemorrhage. J NeuroIntervent Surg 2010; 2:385-389.
  5. Jayaraman MS, Mayo-Smith WW, Tung GA, et al. Detection of intracranial aneurysms: multi-detector row CT angiography compared with DSA. Radiology 2004; 230:510-518.
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