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New Anti-Clotting Drug Added to Recommendations for Treating Irregular Heartbeat

DALLAS, Feb. 14, 2011 /PRNewswire-USNewswire/ -- The newly approved drug dabigatran is an alternative to warfarin to help prevent dangerous blood clots in patients with atrial fibrillation, according to updated guidelines from the American College of Cardiology, American Heart Association and the Heart Rhythm Society.


The "Focused Update" — published in Circulation: Journal of the American Heart Association, Journal of the American College of Cardiology and HeartRhythm Journal — specifically updates the section on emerging antithrombotic agents in atrial fibrillation treatment guidelines released by the three organizations on Dec. 20, 2010.

Atrial fibrillation is an irregular heart rhythm that occurs when the heart's two upper chambers beat erratically, causing the chambers to pump blood rapidly, unevenly and inefficiently. Blood can pool and clot in the chambers, increasing the risk of stroke or heart attack. More than two million Americans live with the condition.

According to this most recent update, dabigatran is useful as an alternative to warfarin to prevent stroke and blood clots in patients with either paroxysmal (recurrent episodes that stop after seven days) or permanent (an on-going episode) atrial fibrillation, and with risk factors for stroke or blood clotting who do not have a prosthetic heart valve, significant heart valve disease, severe renal failure or advanced liver disease.

Warfarin, an anti-clotting drug used since the 1950s, requires patients to have regular testing to monitor its effectiveness and dosage adjustment.

In December 2010 the atrial fibrillation guidelines were updated and recommended that a combination of aspirin and the oral antiplatelet drug clopidogrel might be considered to prevent stroke or other types of blood clots in patients with atrial fibrillation who are poor candidates for the clot-preventing drug warfarin.

Authors are: L. Samuel Wann, M.D., Writing Committee chair; Anne B. Curtis, M.D.; Kenneth A. Ellenbogen, M.D.; N.A. Mark Estes III, M.D.; Michael D. Ezekowitz, M.B.; Warren M. Jackman, M.D.; Craig T. January, M.D., Ph.D.; James E. Lowe, M.D.; Richard L. Page, M.D.; David J. Slotwiner, M.D.; William G. Stevenson, M.D.; and Cynthia M. Tracy, M.D.

Author disclosures are on the manuscript.

The American Heart Association/American Stroke Association receives funding mostly from individuals. Foundations and corporations donate as well, and fund specific programs and events. Strict policies are enforced to prevent these relationships from influencing the association's science content. Financial information for the American Heart Association, including a list of contributions from pharmaceutical companies and device manufacturers, is available at – 1031 (Circ/Wann)

Additional resources:

  • FDA medication guide for dabigatran – note important guidance on storing this medicine:
  • The American Heart Association has online information and tools to help you get the facts about arrhythmia and learn how to reduce your risk for heart disease and stroke at

  • The American College of Cardiology is transforming cardiovascular care and improving heart health through continuous quality improvement, patient-centered care, payment innovation and professionalism. The College is a 39,000-member nonprofit medical society comprised of physicians, surgeons, nurses, physician assistants, pharmacists and practice managers, and bestows credentials upon cardiovascular specialists who meet its stringent qualifications. The College is a leader in the formulation of health policy, standards and guidelines, and is a staunch supporter of cardiovascular research. The ACC provides professional education and operates national registries for the measurement and improvement of quality care. More information about the association is available online at

    The American Heart Association is the nation's oldest and largest voluntary health organization dedicated to fighting heart disease and stroke. Our mission is to build healthier lives by preventing, treating and defeating these diseases. We fund cutting-edge research, conduct lifesaving public and professional educational programs, and advocate to protect public health. To learn more or join us in helping all Americans, call 1-800-AHA-USA1 or visit

    The Heart Rhythm Society is the international leader in science, education and advocacy for cardiac arrhythmia professionals and patients, and the primary information resource on heart rhythm disorders. Its mission is to improve the care of patients by promoting research, education and optimal health care policies and standards. Incorporated in 1979 and based in Washington, D.C., it has a membership of more than 5,300 heart rhythm professionals in more than 72 countries around the world. CONTACT: Amanda Jekowsky (ACC): (202) 375-6645;  Maggie Francis (AHA): (214) 706-1382; Kennesha Baldwin (HRS): (202) 464-3476;  

    SOURCE American Heart Association
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