Grade | Head CT criteria |
0 | No SAH or IVH |
1 | Minimal SAH and no IVH |
2 | Minimal SAH with bilateral IVH |
3 | Thick SAH (completely filling one or more cistern or fissure) without bilateral IVH |
4 | Thick SAH (completely filling one or more cistern or fissure) with bilateral IVH |
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