Warfarin use for atrial fibrillation increases dementia risk


Atrial fibrillation is really a relatively common condition, and – due to the maturing population – it’s increasingly common. This rise is mirrored by elevated use of the bloodstream-thinning drug, warfarin. The drug has saved numerous lives, but new information shows a concealed danger – an elevated chance of dementia in atrial fibrillation patients.

[Boxes of warfarin tablets]
Links between warfarin and dementia are uncovered by new research.

Warfarin has been utilized to avoid potentially existence-threatening thrombus in excess of fifty years an believed 20 million People in america are presently using the drug.

Atrial fibrillation (AF) describes an irregular, frequently abnormally fast, heartbeat. It may cause a variety of signs and symptoms, including difficulty breathing, lightheadedness, and fatigue.

You will find an believed 2.seven million People in america coping with AF.

Based on the American Heart Association, AF increases the chance of stroke fivefold. Because of this, warfarin’s capability to prevent thrombus is really a potential existence-saver.

Because thrombus can seriously affect thinking processes, AF may enhance the chance of developing dementia. However, bloodstream thinners accustomed to ease AF signs and symptoms increase the probability of brain will bleed that may, with time, possess a negative effect on thinking processes.

Warfarin and dementia

Warfarin has been used for many years and is prescribed in large quantities across the industrialized world. New research, presented at the Heart Rhythm Society’s 37th Annual Scientific Sessions, used data from more than 10,000 patients to investigate links between warfarin, dementia, and AF.

Each of the participants in the study was a long-term user of warfarin. Some used the drug for AF, others used it for different conditions including thromboembolism and valvular heart disease. None had a history of dementia.

After 7 years, the group was followed up. The team found that dementia was more prevalent in the AF group than the non-AF group, 5.8 percent compared with 1.6 percent, respectively.

The study was conducted by Dr. T. Jared Bunch and a team of researchers at Intermountain Medical Center Heart Institute in Salt Lake City, UT. They showed that individuals using warfarin for AF on a long-term basis had increased rates of vascular dementia and Alzheimer’s when compared with warfarin users with conditions other than AF.

The trouble with warfarin

Warfarin is really a infamously challenging drug to manage in the correct levels. A tightrope needs to be walked between your perils of clotting somewhere and bleeding alternatively. Each patient responds in a different way to warfarin, and multiple factors could affect the drug’s effects. Furthermore, its actions in your body make time to develop, so choosing the best dosage could be a lengthy process. These 4 elements combined make warfarin levels hard to manage.

Previous research shown that worse warfarin management might increase the likelihood of developing dementia in AF patients. The present research supported these earlier findings the danger was indeed increased in patients whose dosage was harder to handle. However, additionally they discovered that, in addition to the quality of warfarin management, dementia levels still elevated.

In a nutshell, the scientists demonstrated that whether warfarin levels were excessive, lacking, or in the right dosage, the chance of dementia still elevated.

“Our study results are the first to show that there are significant cognitive risk factors for patients treated with Warfarin over a long period of time regardless of the indication for anticoagulation.”

T. Jared Bunch, MD

Future concerns surrounding warfarin

For several reasons, Dr. Bunch thinks these answers are crucial. First of all, you should learn about any risks connected having a medication, especially one that’s used so generally. He recommends that just individuals who need bloodstream thinners ought to be recommended them.

Next, the outcomes claim that other medications that may increase the likelihood of bleeding, like aspirin, ought to be prevented by people taking bloodstream thinners, unless of course entirely necessary. Also, for individuals who’re taking warfarin, but whose dosage levels take time and effort to handle, switching to more recent, more foreseeable drugs may well be a safer solution.

Due to warfarin’s prevalent usage, the findings associated with a research into its connected risks will probably spark debate.

Find out about how yoga may help ease atrial fibrillation signs and symptoms.



  1. Thanx!

  2. DanGheesling

    Great follow up comment, it&1quo;s a long shot, but what was your character name on Sierra&1quo;s The Realm?

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