London, October 14: A new study described the understanding of atrial fibrillation seen in stroke patients. According to the study, atrial fibrillation discovered after a stroke is not the same as irregular heartbeats known prior to the stroke. Millions of stroke survivors worldwide are subjected to extended cardiac monitoring, which leads to the identification of atrial fibrillation, or abnormal heartbeats, in up to 1.5 million of these patients each year. Global Handwashing Day 2023 Date and Theme: Know the History and Significance of the International Event Aimed at Raising Awareness on the Importance of Hand Hygiene.

The study was published in The Lancet Neurology. The study, led by Western University professor Dr. Luciano Sposato, proposes that atrial fibrillation detected post-stroke exhibits distinct characteristics. It has a lower prevalence of risk factors, cardiovascular comorbidities, and changes associated with upper chambers of the heart than atrial fibrillation known prior to the stroke. This could potentially explain its association with a decreased risk of another ischaemic stroke, which results from a blocked artery.

"The differences in the nature and effects of atrial fibrillation detected after a stroke compared to those known before are significant. The article proposes a new classification of heart rhythm and research standards to guide future research in the field, ensuring a more targeted and effective approach to secondary stroke prevention," said Sposato, who is Kathleen and Dr Henry Barnett Chair in Stroke Research and head of the Stroke Program at London Health Sciences Centre. Atrial fibrillation is usually asymptomatic in stroke patients and generally happens in short bursts which can only be detected by continuously monitoring the heart. World Sight Day 2023: From Leafy Greens to Eggs, 10 Foods You Must Eat for Good Eyesight and Overall Eye Health.

The balance between the total duration of each of those bursts of atrial fibrillation and other risk factors is pivotal in understanding patient risk levels and designing better treatment options. In this article, the authors used information from their own studies, gathered over a decade of intense research in the field, and complemented it with updated data from other groups.

One of the main conclusions is that patients diagnosed with atrial fibrillation post-stroke generally have fewer associated health conditions and a 26 per cent lower likelihood of experiencing another stroke than those with known atrial fibrillation. This insight is crucial to designing more personalized and effective treatment strategies for patients.

"To date, all patients diagnosed with atrial fibrillation after a stroke are treated with anticoagulants, except for when there is a clear contraindication. This is what current national and international guidelines recommend. In the future, we may be able to identify patients with relatively lower risk who may not need to be treated with anticoagulants immediately but would need to be constantly monitored to detect changes in their risk profile," said Sposato.

"However, further research is needed to prove this concept. AI-driven diagnostic tools are potential game-changers. Such tools may identify low-risk patients and may even flag moments in which their risk is transiently or permanently increased, requiring a change in their medications or prevention strategies."

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