Fewer Deaths Occurring From Brain Bleeds

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The report is published in the June 4 online edition of The Lancet Neurology.

For the study, Nieuwkamp's team analyzed 33 studies conducted between 1973 and 2002 involving 8,739 patients.

The researchers found that although the average age of patients with the condition increased from 52 to 62, the odds of dying dropped from 51 percent to 35 percent. Nieuwkamp's group noted that deaths in Japan were 11.8 percent lower than in Europe, the United States, Australia and New Zealand. This difference may relate to faster hospital admission and treatment in Japan, they speculated.

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Dr. Majaz Moonis, director of stroke services at the University of Massachusetts in Worcester, noted that although the reduction in deaths from subarachnoid hemorrhages is small, it is real.

"There is a small but real reduction in aneurysms and subarachnoid hemorrhage because of significant advancements in noninvasive imaging that identifies aneurysms early, and preventive treatment, mainly with endovascular coiling as well as medications," he said.

More information

For more information on subarachnoid hemorrhage, visit the U.S. National Library of Medicine.

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