9 doctors weighed in:
Are brain aneurysms usually fatal?
9 doctors weighed in

Dr. Ramin AmirNovin
Neurosurgery
6 doctors agree
In brief: Sometimes
There is good amount of study performed on the natural history of brain aneurysms.
Aneurysms under 5 mm tend to have a low rate of rupture an hence not very dangerous. Conversely, the larger aneurysms (specially those larger than 1 cm) are very dangerous and every time they bleed kill 50% of the patients. Hence, if your aneurysm has not ruptured, it is important to discuss the risks with a md.

In brief: Sometimes
There is good amount of study performed on the natural history of brain aneurysms.
Aneurysms under 5 mm tend to have a low rate of rupture an hence not very dangerous. Conversely, the larger aneurysms (specially those larger than 1 cm) are very dangerous and every time they bleed kill 50% of the patients. Hence, if your aneurysm has not ruptured, it is important to discuss the risks with a md.
Dr. Ramin AmirNovin
Dr. Ramin AmirNovin
Thank
Dr. Reza Karimi
Neurosurgery
2 doctors agree
In brief: Ruptured or not?
Ruptured brain aneurysms can cause devastating neurological injury with up to a 50% mortality (death) rate if left untreated.
Non-ruptured aneurysms generally have little or no symptoms and may be treated electively if they are large enough (>5mm), are growing, or have a very irregular shape. The precise size of non-ruptured aneurysms which require treatment is controversial.

In brief: Ruptured or not?
Ruptured brain aneurysms can cause devastating neurological injury with up to a 50% mortality (death) rate if left untreated.
Non-ruptured aneurysms generally have little or no symptoms and may be treated electively if they are large enough (>5mm), are growing, or have a very irregular shape. The precise size of non-ruptured aneurysms which require treatment is controversial.
Dr. Reza Karimi
Dr. Reza Karimi
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Dr. Abhineet Chowdhary
Neurosurgery
1 doctor agrees
In brief: Sometimes
If a brain aneurysm ruptures, there is a 40% of death before you make it to the hospital and a 50% chance of poor outcome or death of those who do make it to the hospital.

In brief: Sometimes
If a brain aneurysm ruptures, there is a 40% of death before you make it to the hospital and a 50% chance of poor outcome or death of those who do make it to the hospital.
Dr. Abhineet Chowdhary
Dr. Abhineet Chowdhary
Thank
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