Still be very cautious.
From the brain aneurysm foundation:
“When a brain aneurysm ruptures, it causes bleeding into the compartment surrounding the brain, the subarachnoid space, causing a subarachnoid hemorrhage (SAH). Often the aneurysm heals over, bleeding stops, and the person survives. In more serious cases, the bleeding may cause brain damage with paralysis or coma. In the most severe cases the bleeding leads to death.
Statistics
50% of those people die within minutes of a massive hemorrhage. Of the 50% who survive, half will suffer delayed death. The remaining survivors, depending upon the level of hemorrhage, usually live with severe long-term deficits.”
So prayers are warranted. Expect the worst, and hope for the best.
Two words: Hyperbaric Oxygen