Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Symptoms may include a severe headache of rapid onset, vomiting, decreased level of consciousness, fever, and sometimes seizures. Neck stiffness or neck pain are also relatively common. In about a quarter of people a small bleed with resolving symptoms occurs within a month of a larger bleed.

Property Value
dbo:abstract
  • Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Symptoms may include a severe headache of rapid onset, vomiting, decreased level of consciousness, fever, and sometimes seizures. Neck stiffness or neck pain are also relatively common. In about a quarter of people a small bleed with resolving symptoms occurs within a month of a larger bleed. SAH may occur as a result of a head injury or spontaneously, usually from a ruptured cerebral aneurysm. Risk factors for spontaneous cases included high blood pressure, smoking, family history, alcoholism, and cocaine use. Generally, the diagnosis can be determined by a CT scan of the head if done within six hours of symptom onset. Occasionally a lumbar puncture is also required. After confirmation further tests are usually performed to determine the underlying cause. Treatment is by prompt neurosurgery or radiologically guided interventions. Medications such as labetalol may be required to lower the blood pressure until repair can occur. Efforts to treat fevers are also recommended. Nimodipine, a calcium channel blocker, is frequently used to prevent vasospasm. Routine use medications to prevent further seizures is of unclear benefit. Nearly half of people with a SAH due to an underlying aneurysm die within 30 days and about a third who survive have ongoing problems. 10–15 percent die before reaching a hospital. Spontaneous SAH occurs in about one per 10,000 people per year. Females are more commonly affected than males. While it becomes more common with age, about 50% of people present under 55 years old. It is a form of stroke and comprises about 5 percent of all strokes. Surgery for aneurysms was introduced in the 1930s. Since the 1990s many aneurysms are treated by a less invasive procedure called endovascular coiling, which is carried out through a large blood vessel. (en)
dbo:complications
  • Delayedcerebral ischemia,cerebral vasospasm,seizures
dbo:differentialDiagnosis
dbo:diseasesDB
  • 12602
dbo:eMedicineSubject
  • med (en)
dbo:eMedicineTopic
  • 2883 (en)
dbo:icd10
  • ,
  • I60.
  • P10.3
  • S06.6
dbo:icd9
  • ,
  • -
  • 430
  • 852.0
  • 852.1
dbo:medicalCause
dbo:medicalDiagnosis
dbo:medication
dbo:medlinePlus
  • 000701
dbo:meshId
  • D013345
dbo:omim
  • 105800 (xsd:integer)
dbo:symptom
dbo:thumbnail
dbo:treatment
dbo:wikiPageEditLink
dbo:wikiPageExtracted
  • 2019-11-14 07:32:53Z (xsd:date)
dbo:wikiPageHistoryLink
dbo:wikiPageID
  • 718521 (xsd:integer)
dbo:wikiPageLength
  • 69020 (xsd:integer)
dbo:wikiPageModified
  • 2019-11-14 07:32:48Z (xsd:date)
dbo:wikiPageOutDegree
  • 301 (xsd:integer)
dbo:wikiPageRevisionID
  • 926102761 (xsd:integer)
dbo:wikiPageRevisionLink
dbp:wikiPageUsesTemplate
dbp:wordnet_type
dct:subject
rdf:type
rdfs:comment
  • Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Symptoms may include a severe headache of rapid onset, vomiting, decreased level of consciousness, fever, and sometimes seizures. Neck stiffness or neck pain are also relatively common. In about a quarter of people a small bleed with resolving symptoms occurs within a month of a larger bleed. (en)
rdfs:label
  • Subarachnoid hemorrhage (en)
owl:sameAs
foaf:depiction
foaf:isPrimaryTopicOf
foaf:name
  • Subarachnoid hemorrhage (en)
is dbo:deathCause of
is dbo:differentialDiagnosis of
is dbo:wikiPageRedirects of
is dbp:deathCause of
is rdfs:seeAlso of
is foaf:primaryTopic of