Survivors of Ischaemic, Haemorrhagic Stroke at High Long-Term Risk of Dementia

 I've been writing about this for years and you're finally catching up to me? Tells a lot about the complete fucking failure of the stroke medical world when a stroke survivor knows more than they do! 

1. A documented 33% dementia chance post-stroke from an Australian study?   May 2012.

2. Then this study came out and seems to have a range from 17-66%. December 2013.`    

3. A 20% chance in this research.   July 2013.

4. Dementia Risk Doubled in Patients Following Stroke September 2018

5. Brain Bleeds Double Dementia Risk February 2025

Survivors of Ischaemic, Haemorrhagic Stroke at High Long-Term Risk of Dementia

Survivors of intracerebral haemorrhage and subarachnoid haemorrhage are at particularly high long-term risk of post-stroke dementia, according to a study published in the journal Stroke.

“In this nationwide cohort of stroke survivors aged 18 years and older, 11.5% received dementia diagnoses up to 30 years after their stroke,” reported Priscila Corraini, PhD, Aarhus University Hospital, Aarhus, Denmark, and colleagues. “This risk was increased almost 2-fold compared with the general population. The risks for post-stroke dementia were substantially higher for haemorrhagic forms of stroke than for ischaemic stroke and for stroke occurring at younger ages than at older ages. Risks among survivors were persistently high even after 10 years.”

The increased risk of post-stroke dementia was not altered appreciably by vascular factors or by other measured factors associated with both stroke and dementia risk.

For the study, the researchers conducted a 30-year nationwide population-based cohort study using data from Danish medical databases (1982-2013) covering all Danish hospitals. They identified 84,220 ischaemic stroke survivors, 16,723 intracerebral haemorrhage survivors, 9,872 subarachnoid haemorrhage survivors, and 104,303 survivors of unspecified stroke types. Patients were matched (by age and sex) and compared with a cohort from the general population (1,075,588 patients without stroke).

The 30-year absolute risk of dementia among stroke survivors was 11.5%. Compared with the general population, the hazard ratio for dementia among stroke survivors was 1.80 (95 confidence interval [CI], 1.77-1.84) after any stroke, 1.72 (95% CI, 1.66-1.77) after ischaemic stroke, 2.70 (95% CI, 2.53-2.89) after intracerebral haemorrhage, and 2.74 (95% CI, 2.45-3.06) after subarachnoid haemorrhage.

Younger patients regardless of stroke type faced higher risks of post-stroke dementia than older patients, a finding that suggests that younger survivors also represent important targets for planning dementia prevention strategies in the future.

“Our findings extend those of earlier cohort studies based on first-time ischaemic strokes or any type of stroke,” the authors wrote. “Most were restricted to older individuals and to shorter follow-up periods. In the present study, relative risks for any stroke were comparable to the 2-fold increased risk within 10 years of follow-up reported for the Framingham and Rotterdam cohorts.”

The authors noted that the validity of their findings is enhanced by the use of a nationwide cohort with universal healthcare coverage, standard practices for treating stroke, and virtually complete follow-up.

Reference: https://www.ahajournals.org/doi/10.1161/STROKEAHA.116.015242

SOURCE: Stroke