Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Step-by-step flow diagram of the study. aSAH, aneurysmal subarachnoid haemorrhage; CTA, CT angiography; DCI, delayed cerebral ischaemia; DSA, digital subtraction angiography; GCS, Glasgow coma scale, MRA, magnetic resonance angiography; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale; NSAIDs, non-steroidal anti-inflammatory drugs; q6h, every 6 hours; TCD, Transcranial Doppler; WFNS, World Federation of Neurological Surgeons.
