Subarachnoid hemorrhage (bleeding in the brain)

Head | Neurology | Subarachnoid hemorrhage (bleeding in the brain) (Disease)


Subarachnoid hemorrhage (HSA) is a special pathology in neurological disease, it appeared especially to young people in, and full health. It is important to note that 60% of people with HSA are women, the risk may be potentiated by oral contraceptive use. HSA is an important cerebrovascular complications of pregnancy, was reported at a rate of 1: 1100 - 1: 2500 pregnant women.

HSA is characterized by the penetration of blood in the subarachnoid space, causing a meningeal syndrome. Blood in the subarachnoid space can come from four sources: the cerebral vessels that normally found in this space; a parenchymal cerebral hemorrhage, in which case blood can reach the subarachnoid space by breaking cortex or ventricular flooding; the choroid plexus following the path of ventricular system; following rupture of arachnoid subdural space.

Causes and Risk factors

In terms of causes and mode of production, HSA are divided into primary - where the bleeding is the source of the subarachnoid space or spinal vessels, and bleeding occurs spontaneously and secondary - where the blood comes from the brain parenchyma. The most common causes of HSA are ruptured saccular intracranial aneurysm and intracranial arteriovenous malformations. Other causes include burglary in the subarachnoid space of intracerebral hemorrhage, bleeding within tanks or systemic disease. Some of HSA have unknown etiology. The incidence of cerebral artery aneurysms cerebral arterial aneurysms varies between 39% and 76. 1%.

Diagnosis and Treatment

Tests to establish the diagnosis such as CT and lumbar puncture (spinal tap) may be performed to rule out a small bleed.

Specific treatments depend on the cause of the bleeding. For aneurysms surgical clipping and endovascular clotting off of the aneurysm are the most common procedures. Any associated bleeding abnormalities will be reversed as well as blood pressure control. ...