INBDE (Integrated National Board Dental Examination) Practice Exam

What is the most common cause of SUBARACHNOID HEMORRHAGE?

1. MMA

2. bridging veins

3. berry aneurysm

4. pernicious anemia

The correct answer is: berry aneurysm

SUBARACHNOID HEMORRHAGE occurs when there is bleeding in the space between the brain and the surrounding tissues. While it can have various causes, the most common cause is a ruptured berry aneurysm. A berry aneurysm is a small balloon-like bulge that forms on the wall of a brain artery and can burst, leading to bleeding. The other options, MMA, bridging veins, and pernicious anemia, are not common causes of SUBARACHNOID HEMORRHAGE. MMA, or methylmalonic acidemia, is a rare genetic disorder that affects the body's ability to process certain proteins and fats. Bridging veins are responsible for draining blood from the surface of the brain, and while they can rupture and cause bleeding, it is not a common cause of SUBARACHNOID HEMORRHAGE. Pernicious anemia is a condition where the body does not have enough healthy red blood cells due to a lack of vitamin B12, and while it can cause damage to nerves and the spinal cord, it is not a common cause of SUBARACHNOID HEMORRHAGE. So, the most likely cause of SUBARACHNOID