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FACP. Colegio de médicos de Tarragona Nº 4305520 / fgcapriles@gmail.com




Sunday, September 29, 2013

Ottawa SAH Rule

"Researchers from Ottawa, Canada have developed a simple clinical decision rule that may help emergency doctors identify which patients with headache have a dangerous subarachnoid hemorrhage or SAH (bleeding in a certain area of the brain).

The study is published in the September 25 issue of the Journal of the American Medical Association (JAMA). It is led by Dr. Jeffrey Perry, senior scientist at the Ottawa Hospital Research Institute (OHRI), emergency physician at The Ottawa Hospital (TOH) and associate professor at the University of Ottawa (uOttawa)."
Ottawa SAH (Subarachnoid Hemorrhage) Rule
  • For alert patients older than 15 years with new severe nontraumatic headache reaching maximum intensity within 1 hour.
  • Not for patients with new neurologic deficits, previous aneurysms, SAH, brain tumours, or history of recurrent headaches (≥ 6months).

Investigate if ≥1 high risk variables present: 
  1. Age ≥ 40 years
  2. Neck pain or stiffness
  3. Witnessed loss of consciousness
  4. Onset during exertion
  5. Thunderclap headache (instant peaking pain)
  6. Limited neck flexion on examination
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