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World Health Matters: Denmark: Stroke rate in young adults spikes over two decades

Written by | 22 Jun 2016 | All Medical News

by Gary Finnegan: Hospital admissions for first-time stroke increased in young adults in Denmark during the past two decades, according to new research in Journal of the American Heart Association.

Globally, the incidence of stroke in developed countries has stabilised or declined in recent decades, despite the ageing population. This new analysis found increasing rates of first-time hospitalisation for both ischaemic stroke and transient ischemic attack (TIA) or ‘warning stroke’ among young Danish adults.

Ischemic strokes are causes by blockages in the blood vessels that lead to the brain. TIAs are caused by temporary blockages of the blood vessels.

“Stroke and transient ischemic attacks rarely occur in the young but may have a profound and long-lasting impact for the individual if they do,” said lead author Maiken Tibaek of Rigshospitalet, University of Copenhagen, Denmark. “Compared to elderly individuals, strokes in the young may have greater economic impact because it impairs the ability to work during the most productive years of life.”

Using the Danish National Patient Registry, researchers identified all cases of first-time stroke and TIA among those 15 to 30 years of age hospitalised between 1994 and 2012. The analysis included a total of 4,156 including 3,431 strokes and 725 TIAs. Researchers estimated age-specific incidence rates of first-time hospitalisation for stroke and TIA as well as for subtypes of stroke, and reported it as numbers of new cases per 100,000 person-years.

During the 18-year study period, researchers found that hospital admissions for overall strokes increased by 1.8 percent annually and increased 4.1 percent annually for TIAs from 1994 to 2012. In the early period of the study, hospitalisations for ischemic strokes and TIAs among women were higher compared to men; however, hospitalisations for ischemic stroke among men increased by 14.6 percent annually during the last part of the study period (2006-2012).

Moreover, hospitalization rates for two subtypes of stroke, intracerebral haemorrhage and subarachnoid haemorrhage remained consistent during the study period.

Although it’s not clear why rates of ischemic stroke and TIA are on the rise in young Danish adults, the increases in the number of people with diabetes and obesity in this population may have contributed to this trend, Tibaek said.

“For healthcare providers and patients, this study confirms the importance of focusing on prevention and addressing lifestyle-related risk factors to prevent stroke,” Tibaek said. “It’s also important that clinicians who see young adults with symptoms of stroke are aware that stroke is not that rare a diagnosis in younger adults.”

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