View Entire Collection
By Clinical Topic
Diabetes – Summer 2012
Future of Nursing Initiative
Heart Failure - Fall 2011
Influenza - Winter 2011
Nursing Ethics - Fall 2011
Trauma - Fall 2010
Traumatic Brain Injury - Fall 2010
Fluids & Electrolytes
Circadian rhythms may influence when strokes occur. Researchers analyzed data from nearly 13,000 patients who'd experienced one of these three stroke types as a first stroke: cerebral infarction (ischemic stroke, the most common stroke type), intracerebral hemorrhage, and subarachnoid hemorrhage. Dividing the day hours into 12 2-hour segments, the researchers looked for patterns in stroke occurrence. They found that all three stroke types peaked twice during the day: between 6 a.m. and 8 a.m., and between 6 p.m. and 8 p.m.
Strokes were significantly less likely to happen during the night, but about 20% of cerebral infarctions occurred during sleep. Most of these happened immediately before the person awakened.
Because blood pressure drops during sleep, the researchers concluded that sleeping increases the risk of ischemic stroke and reduces the risk of hemorrhagic stroke.
Source: Differences in circadian variation of cerebral infarction, intracerebral hemorrhage and subarachnoid hemorrhage by situation at onset, Journal of Neurology, Neurosurgery and Psychiatry, S Omama, et al., online ahead of print publication, August 17, 2006.
Find in-depth content on major issues provided by leading companies in partnership with NursingCenter.com
BD Safety Beyond Needlestick Prevention Learning Center
Sponsored by BD Medical
Sign up for our free enewsletters to stay up-to-date in your area of practice - or take a look at an archive of prior issues
Join our CESaver program to earn up to 100 contact hours for only $34.95
Explore a world of online resources
Back to Top