101. Resource Library Find Information On Atrial Fibrillation/flutter Find information on atrial fibrillation/flutter at MerckSource. Learn more aboutatrial fibrillation/flutter, atrial fibrillation/flutter is a heart rhythm http://www.mercksource.com/pp/us/cns/cns_hl_adam.jspzQzpgzEzzSzppdocszSzuszSzcns

102. UpToDate Patient Information: Atrial Fibrillation INTRODUCTION — atrial fibrillation is an abnormal rhythm of the heart. atrial fibrillation is more frequent in men than women, and in whites than blacks http://patients.uptodate.com/topic.asp?file=hrt_dis/4882

103. Atrial Fibrillation Treatment Options And Information At Mayo Clinic atrial fibrillation is the most common arrhythmia. Find treatment options at MayoClinic. http://www.mayoclinic.org/atrial-fibrillation/

Home About Mayo Clinic Jobs Contact Us Mayo Clinic Locations: Arizona Florida Minnesota Mayo Clinic ... Medical Services Atrial Fibrillation Atrial Fibrillation Overview Diagnosis Treatment Options Appointments ... Medical Services Treatment of Atrial Fibrillation at Mayo Clinic Treatment to cure irregular heart rhythm puts a Mayo-trained doctor back on course. Read more. News See highlights of recent Mayo Clinic news related to atrial fibrillation. Read more on the news page. Mayo Clinic is nationally recognized for its expertise in the treatment of atrial fibrillation, a fast and irregular heartbeat. At Mayo Clinic, thousands of patients who have atrial fibrillation are treated each year. Heart specialists and surgeons consult with patients to determine the best course of treatment. Mayo Clinic has expertise and experience in some of the most advanced treatments for atrial fibrillation, including the surgical maze procedure which, due to its complexity, is provided to patients in only a few medical centers in the United States. Diagnosis For patients with atrial fibrillation, the medical team at Mayo Clinic is led by electrophysiologists. These are cardiologists (medical experts in heart care) with specialized training in the diagnosis and treatment of heart rhythm disorders. Diagnosis often includes electrophysiologic testing for potentially serious atrial fibrillation. Read more about

104. Atrial Fibrillation What is atrial fibrillation? atrial fibrillation is the most common form ofirregular heartbeat (arrhythmia ). Normally, your heart s electrical system http://www.bchealthguide.org/kbase/topic/special/hw160870/sec1.htm

var hwPrint=1;var hwDocHWID="hw160870";var hwDocTitle="Atrial Fibrillation";var hwRank="1";var hwSectionHWID="hw160872";var hwSectionTitle="Overview";var hwSource="en-caQ2_05";var hwDocType="Special"; Atrial Fibrillation Overview What is atrial fibrillation? Atrial fibrillation is the most common form of irregular heartbeat ( arrhythmia ). Normally, your heart's electrical system controls the rhythm at which your heart beats. See illustrations of the heart and its electrical system In atrial fibrillation, abnormal electrical impulses cause the upper chambers of the heart (atria) to fibrillate, or quiver, resulting in irregular and rapid beating of the ventricles , the heart's main pump. As a result, the heart pumps less efficiently, reducing blood flow to the body and to the heart muscle itself. For most people, this aspect of atrial fibrillation in itself is usually not life-threatening. However, people with atrial fibrillation are at increased risk for life-threatening strokes , especially if they are not taking anticoagulant medications . Inefficient pumping of the atria allows blood to pool and clot there. If these clots are pumped out of the heart and into the bloodstream, they can lodge in the brain's blood vessels, resulting in stroke.

105. Atrial Fibrillation Fact Sheet | CVH Program Ageadjusted death rates for atrial fibrillation as a contributing Atrialfibrillation is the most common sustained heart rhythm disorder and increases http://www.cdc.gov/cvh/library/fs_atrial_fibrillation.htm

Home Contact Us Program Activities Announcements ... Fact Sheets Atrial Fibrillation Fact Sheet This document is also available in Portable Document Format (PDF - 74K) Learn more about PDFs Age-adjusted death rates for atrial fibrillation as a contributing cause—United States, 1999 Age adjusted to the 2000 U.S. population Source: 1999 mulitple-cause mortality data from the National Vital Statistics, CDC. MMWR [A text version of this graphic is also available.] Facts on Atrial Fibrillation Atrial fibrillation is the most common sustained heart rhythm disorder and increases the risk for heart disease and stroke, both leading causes of death in the United States. An estimated 2.2 million adults in the United States have been diagnosed with atrial fibrillation. Atrial fibrillation is the quivering of the top right chamber of the heart. It is characterized by a rapid and irregular beat that can cause serious complications, even death. If the heart rate is rapid and irregular, a healthcare provider should be seen quickly. Ideal adult pulse is steady with regular rates of 60–80 beats per minute. Deaths associated with atrial fibrillation mortality have increased over the past two decades. Overall, the age-standardized death rate (per 100, 000 US population) increased from 27.6 in 1980 to 69.8 in 1998.

106. The Maze Procedure atrial fibrillation is an abnormality of the electrical system of the heart. atrial fibrillation occurs when this electrical impulse no longer travels http://www.sts.org/doc/4511

The Maze Procedure Description By: Thoralf Sundt, MD TABLE OF CONTENTS Atrial Fibrillation Overview Atrial Fibrillation Causes Atrial Fibrillation Results Surgical Procedure ... Results ATRIAL FIBRILLATION OVERVIEW The MAZE Procedure is performed by Cardiothoracic surgeons on the left and right atrium for the treatment of atrial fibrillation . Atrial fibrillation is an abnormality of the electrical system of the heart. Normally, the heartbeat is triggered by an electrical impulse which starts in the Sinoatrial (SA) node . This structure resides in the right atrium and is the normal "pacemaker" of the heart. The electrical signal to contract starts in the SA node and normally moves evenly across the atrium, triggering it to contract all at once. The impulse then travels across the atrioventricular ( AV ) node and triggers the ventricles (the main pumping chambers of the heart) to contract. This is called sinus rhythm . Atrial fibrillation occurs when this electrical impulse no longer travels from SA node to the AV node in the normal manner. Instead of the impulse traveling evenly across the atrium straight from the SA node to the AV node, the impulse is "side-tracked" such that the atrium is no longer triggered evenly and in synchrony, but is triggered one small region at a time. The atrium no longer contracts in a coordinated manner, but instead it fibrillates irregularly. The electrical signal to ventricle through the AV node is therefore irregular and hence the heartbeat is irregular. These are drawings of the heart looking from back-to-front. The arrows show the path of the electrical impulse in (a) atrial flutter and (b) atrial fibrillation. Rather than traveling in a straight line, the impulse is "side-tracked" such that it travels in large or small circles triggering the atrium to contract irregularly. (Click on an illustration to enlarge it.)

107. Virtual Hospital: Cardiology: Atrial Fibrillation atrial fibrillation is the most common arrhythmia requiring treatment in the United atrial fibrillation is associated with many cardiac conditions, http://www.vh.org/adult/patient/internalmedicine/faq/atrialfibrillation.html

Atrial Fibrillation: Frequently Asked Questions Brian Olshansky, M.D., Professor of Internal Medicine University of Iowa Hospitals and Clinics Creation Date: May 2001 Last Revision Date: May 2001 Peer Review Status: Internally Peer Reviewed Atrial fibrillation is the most common arrhythmia requiring treatment in the United States. Approximately 2.2 million individuals in this country have atrial fibrillation. What causes atrial fibrillation? Atrial fibrillation is associated with many cardiac conditions, including cardiomyopathy, coronary artery disease, valvular heart disease, ventricular hypertrophy and other associated conditions. Atrial fibrillation has been associated with hyperthyroidism, acute alcohol intoxication, changes in the autonomic nervous system and is common after cardiac surgery. The most common condition associated with atrial fibrillation is high blood pressure. Some people have atrial fibrillation with no obvious source or associated condition. This is more frequent in younger people and it is called "lone" atrial fibrillation. It is likely that people who have this form of atrial fibrillation have had some inflammatory process or trauma to the atrium. Some people have a focal source that originates from the pulmonary veins. Is atrial fibrillation associated with a heart attack or a stroke?

108. Disease Category Listing (243): Atrial Fibrillation CenterWatch Listing of Clinical Research Trials for atrial fibrillation. http://www.centerwatch.com/patient/studies/cat243.html

Clinical Trials: Atrial Fibrillation Illinois Maywood; Loyola University Medical Center Kentucky Lexington; University of Kentucky Chandler Medical Center Do you have Atrial Fibrillation? Do you want to stop taking Coumadin? Massachusetts Boston; Massachusetts General Hospital Boston; Brigham and Women’s Hospital, Cardiology Division New York Syracuse; SUNY Upstate Medical University Treatment of Atrial Fibrillation During Cardiac Surgery with Microwave Ablation. Ohio Cleveland; Cleveland Clinic Foundation Oklahoma Oklahoma City; University of Oklahoma, Cardiac Arrhythmia Research Institute Pennsylvania Philadelphia; University of Pennsylvania Virginia Charlottesville; University of Virginia Prospective Study of the Guidant Microwave Ablation System for the Treatment of Chronic Atrial Fibrillation Falls Church; Inova Research Center Do you have Atrial Fibrillation? Do you want to stop taking Coumadin? Back to Clinical Trials by Medical Areas Research centers specializing in this illness area Additional resources ... in this illness area This site is run by CenterWatch, a publishing company that focuses on the clinical trials industry. The information provided in this service is designed to help patients find clinical trials that may be of interest to them, and to help patients contact the centers conducting the research. CenterWatch is neither promoting this research nor involved in conducting any of these trials. Trial listing updated: September 7, 2005 at 2:24:33 PM

109. Atrial Fibrillation- HA72 Videos, digital media, and print resources for healthcare professionals providingdirect patient care. http://www.milner-fenwick.com/products/ha72/index.asp

Keyword or Catalog Number View Cart Site Map Help Home ... In-Home Patient Videos BUY NOW Qty: Language: English Spanish Offer expires 9/30/05 Cannot be combined with any other offer. The in-home videos are excluded from this offer. CCTV and digital rights are available for an additional charge. For additional quantities, please call (800)432-8433. Learn more about this offer. Learn more about Broadcast Rights Order VHS Preview Language: English Spanish Related Products Pacemakers High Blood Pressure: An Introduction to Treatment NOTE: The appearance and security of this website will improve if you upgrade your internet browser Heart Disease Atrial Fibrillation How do Online Previews Work? Product Statistics Catalog #: HA-72 Edition: Duration: 13 minutes Format(s): Language(s): English or Spanish Summary Details Summary Details Introduction Understanding Atrial Fibrillation Treating Atrial Fibrillation Living With Atrial Fibrillation ... Conclusion Introduction Atrial Fibrillation is a type of rapid, irregular heartbeat. Some people can have Atrial Fibrillation and feel fine, others may develop symptoms like: Palpitations- an awareness of their own rapid heartbeat Dizziness Shortness of breath Fatigue Swelling in the feet Regardless of how you feel, Atrial Fibrillation needs to be treated right away or serious complications can develop.

110. Index Of /physiobank/database/afpdb with p come from subjects who have paroxysmal atrial fibrillation (PAF). with n come from subjects who do not have documented atrial fibrillation, http://www.physionet.org/physiobank/database/afpdb/

PhysioNet PhysioBank PhysioToolkit PhysioBank physiologic signal archives for biomedical research Advanced Search Tour Mirrors How to Cite ... NCRR CinC Challenge 2001 data sets: The PAF Prediction Challenge Database Update (16 March 2001): Four of the records in the learning set have been replaced; these are . Thanks to Isaac Henry, Christoph Maier, Joseph Mietus, and Juan Millet for their timely and valuable feedback on this database. This database of two-channel ECG recordings has been created for use in the Computers in Cardiology Challenge 2001 , an open competition with the goal of developing automated methods for predicting paroxysmal atrial fibrillation (PAF). See the challenge announcement for information about the competition, and see Predicting Onset of Atrial Fibrillation for a brief overview of the clinical problem, its significance, and suggestions for further reading on the subject. The database is divided into a learning set (records with names of the form n and p ) and a test set (records with names of the form t If you wish to download all of the files in this directory without selecting each one individually, try using a utility for batch HTTP transfers such as

111. Spontaneous Termination Of Atrial Fibrillation Is it possible to predict if (or when) an episode of atrial fibrillation will atrial fibrillation (AF) is the most common serious cardiac arrhythmia, http://www.physionet.org/challenge/2004/

PhysioNet PhysioBank PhysioToolkit PhysioNet the research resource for complex physiologic signals Advanced Search Tour Mirrors How to Cite ... NCRR Spontaneous Termination of Atrial Fibrillation: A challenge from PhysioNet and Computers in Cardiology 2004 11 April 2004: The autoscorer is now available. Submit your entry using the autoscorer and receive your score by return email within a few minutes. Top scores are also available and are continously updated by the autoscorer. 30 April 2004: A set of unaudited beat annotations has been posted for record a04 of test set A. These were inadvertently omitted from the original posting of the challenge database. 1 May 2004: Twenty particpants submitted initial results for scoring before the first deadline passed. If your initial results were received before the first deadline, any results you submit before the final deadline of 14 September can be used to improve your standing. If you missed the first deadline, you may still submit results for unofficial scores. Read about the winners of this challenge here Introduction The fifth annual PhysioNet/Computers in Cardiology Challenge focusses on this question: Atrial fibrillation (AF) is the most common serious cardiac arrhythmia, affecting more than two million people in the US alone. Unlike venticular fibrillation, which is invariably fatal if it is not interrupted, it is possible for atrial fibrillation to be sustained indefinitely, since the ventricles continue to perform the essential function of driving the circulation, albeit inefficiently. The risks of sustained atrial fibrillation are nevertheless serious, and include strokes and myocardial infarctions caused by the formation of blood clots within stagnant volumes in the atria. Evidence suggests that spontaneously terminating (paroxysmal) atrial fibrillation, or PAF, is a precursor to the development of sustained AF.

112. Management Of New Onset Atrial Fibrillation: Summary - Redirect The summary of Evidence Report/Technology Assessment Number 12 Management ofNew Onset atrial fibrillation has been moved. It is now at http://www.ahcpr.gov/clinic/atrialsum.htm

The summary of Evidence Report/Technology Assessment Number 12: Management of New Onset Atrial Fibrillation has been moved. It is now at: www.ahrq.gov/clinic/epcsums/atrialsum.htm Please update your bookmarks. AHRQ Home Page

113. New Research On Atrial Fibrillation ? atrial fibrillation is an irregular heartbeat (arrhythmia) in which the atria,or upper chambers of the heart, beat quickly and inconsistently. http://www.news-medical.net/?id=11726

114. Postgraduate Medicine: Anticoagulant Use In Nonvalvular Atrial Fibrillation To learn how to assess stroke risk associated with atrial fibrillation Preview atrial fibrillation is a common cardiac arrhythmia and carries a high http://www.postgradmed.com/issues/2000/08_00/gornick.htm

Anticoagulant use in nonvalvular atrial fibrillation Determining risk and choosing the safest course Charles C. Gornick, MD VOL 108 / NO 2 / AUGUST 2000 / POSTGRADUATE MEDICINE CME learning objectives To learn how to assess stroke risk associated with atrial fibrillation To understand the role of anticoagulation in atrial fibrillation To become familiar with the uses of warfarin versus aspirin to prevent stroke associated with atrial fibrillation The author discloses no financial interests in this article. This is the first of four articles on tuberculosis This page is best viewed with a browser that supports tables Preview : Atrial fibrillation is a common cardiac arrhythmia and carries a high risk of stroke and systemic embolism, particularly in older patients. Should these patients be treated with anticoagulant drugs and, if so, which ones and how much? In this article, Dr Gornick reviews the literature on this subject and makes suggestions on which treatment plan to choose. Gornick CC. Anticoagulant use in nonvalvular atrial fibrillation: determining risk and choosing the safest course. Postgrad Med 2000;108(2):113-26 A trial fibrillation (AF) is the most common condition associated with stroke and systemic embolism (1). It is also the most frequently encountered cardiac arrhythmia, with a prevalence of 2% to 4% in adults over age 60 years. After age 70, the incidence increases to about 9%, and beyond age 75, AF has been reported in 12.2% of women and 16% of men (1). The occurrence of AF increases with both advancing age and severity of underlying heart disease.

115. Northwestern Memorial Hospital - Exceptional Care In The Heart Of Chicago atrial fibrillation (AF) is a condition when an irregular heartbeat is present Our patients with atrial fibrillation benefit from the most advanced http://www.nmh.org/nmh/heart/af/main.htm

Home About Us Jobs Directions ... Contact Us Northwestern Memorial Hospital Logo Physician Finder Hospital Guide Health Information Healthcare Professionals Navigation Exceptional Care in the Heart of Chicago About Us Bluhm Cardiovascular Institute Special Needs Visitor Information Parking Options Clinical Centers Atrial Fibrillation Coronary Disease Heart Failure Heart Valve Disease ... Women's Cardiovascular Health Specialists Cardiac Behavioral Medicine Cardiovascular Anethesiologists Cardiovascular Radiologists Cardiologists ... Vascular Surgeons Latest News In the News Viewpoint Innovations Cardiovascular Support Groups ... Cardiovascular Institute Center for Atrial Fibrillation Atrial fibrillation (AF) is a condition when an irregular heartbeat is present because the atria, or upper chambers of the heart, are not contracting normally but are instead quivering. It affects about 2.2 million Americans, most of them over age 60. This condition is responsible for 15-20 percent of all strokes because of blood clot formation within the atrial chambers. Our patients with atrial fibrillation benefit from the most advanced medical, minimally invasive and surgical techniques.

116. Management Of Newly Detected Atrial Fibrillation: A Clinical Practice Guideline Recommendation 2 Patients with atrial fibrillation should receive chronic Management of atrial fibrillation review of the evidence for the role of http://www.guideline.gov/summary/summary.aspx?doc_id=4542&nbr=3356

117. Electrical Cardioversion For Atrial Fibrillation And Flutter (Cochrane Review) Abstract of a systematic review of the effects of health care prepared by theCochrane Collaboration. http://www.cochrane.org/cochrane/revabstr/AB002903.htm

From The Cochrane Library, Issue 2, 2005 Electrical cardioversion for atrial fibrillation and flutter (Cochrane Review) Mead GE, Flapan AD, Elder AT ABSTRACT What's new in this issue Search abstracts Browse alphabetical list of titles Browse by Review Group A substantive amendment to this systematic review was last made on 01 November 2001. Cochrane reviews are regularly checked and updated if necessary. Background: Atrial fibrillation increases the risk of stroke, increases the risk of cognitive impairment, and adversely affects cardiovascular haemodynamics. Electrical cardioversion for atrial fibrillation has been in use since the 1960s; the rationale is that restoration of sinus rhythm improves cardiovascular haemodynamics, reduces the risk of stroke, and obviates the need for long-term anticoagulation. Objectives: Search strategy: One reviewer searched the Cochrane Controlled Clinical Trials Register (2000 Issue 4), MEDLINE (1966 to December 2000), EMBASE (1980 to December 2000), CINAHL (1982 to November 2000) and proceedings of the American College of Cardiology (published in the Journal of the American College of Cardiology 1983 to 2000). Reference lists of articles were searched. Personal contact was made with experts in the field. A second reviewer handsearched proceedings of the British Cardiac Society (published in British Heart Journal (1980 to 1995) and in Heart (1995 to May 2001); proceedings of the European Congress of Cardiology and meetings of the Joint Working Groups of the European Society of Cardiology (published in European Heart Journal 1983-2000); scientific sessions of the American Heart Association (published in Circulation 1990-2000).

118. Atrial Fibrillation: A Brief Review Of Classification Systems atrial fibrillation represents the most common clinically significant Although the prevalence of atrial fibrillation remains under one percent in the http://www.ctsnet.org/sections/innovation/arrhythmia/articles/article-3.html

CTSNet is sponsored in part by an educational grant from MEMBER SERVICES: Update Profile Join CTSNet ABOUT US ... CONTACT US Search CTSNet: CTSNet HOME Thoracic In My Opinion Discussions ... Contact Us Atrial Fibrillation: A Brief Review of Classification Systems Home Innovation Centers Arrhythmia Introduction Atrial fibrillation represents the most common clinically significant cardiac arrhythmia; it is estimated that over two million Americans are affected. Atrial fibrillation is characterized by uncoordinated supraventricular (atrial) activation associated with an irregular rapid ventricular response. Consequently, this irregularly, irregular rhythm leads to deterioration of normal atrial mechanical function. Although the prevalence of atrial fibrillation remains under one percent in the general population for those less than 60 years old, it is estimated to affect six to ten percent of those patients over the age of 80. It has been clearly shown that the presence of atrial fibrillation may convey significant morbidity and mortality. Outside of a few renowned surgical centers, atrial fibrillation has generally been treated medically; by drug therapy designed to achieve rate control, rhythm control, and anticoagulation or by percutaneous ablative intervention. Sub-optimal results of long-term medical management combined with the increase in elderly patients undergoing cardiac surgery with concomitant atrial fibrillation has led to a renewed interest in the elimination of atrial fibrillation utilizing surgical modalities.

119. Atrial Fibrillation Is More Common Than Suspected News release from the University of Washington Health Sciences. http://www.washington.edu/newsroom/news/2003archive/04-03archive/k040903.html

Search Directories Reference Tools UW Home ... News and Events FOR IMMEDIATE RELEASE FROM: Walter Neary wneary@u.washington.edu DATE: April 9, 2003 Atrial fibrillation is more common than suspected Irregular heartbeats that put people at higher risk of stroke are more common than patients and doctors might think, according to a report in a recent issue of Circulation, which is published by the American Heart Association A study led by a University of Washington researcher asked patients with previous episodes of atrial fibrillation or flutter to provide electrocardiogram samples for 30 seconds every two weeks for six months, just simply to test equipment in a drug study. The researchers found there was a one in six chance that a patient would record “silent”atrial fibrillation before a symptomatic episode was documented. Doctors have long suspected that much “atrial fib” goes unreported, but this is the largest group of studies to suggest just how unreported it is. The authors suggest that doctors should assume the worst when treating someone at risk of atrial fibrillation and stroke. “There’s a significant amount of atrial fib going on that people do not know about because they don’t feel any symptoms. What this study tells us is that doctors simply don’t know how often their patients have atrial fibrillation. When a doctor thinks a patient has a certain amount of atrial fib, the person is probably having significantly more,” says the lead author, Dr. Richard L. "Rick" Page, Robert A Bruce professor and the division head of cardiology in the

120. University Of Chicago Hospitals: Surgical Treatment For Atrial Fibrillation atrial fibrillation is the most common type of abnormal heart rhythm. IntraOperative Radiofrequency Ablation for atrial fibrillation (Modified Maze http://www.uchospitals.edu/specialties/heart/services/arrhythmias/atrial-fibrill

@import "/css/style.css"; Home About the Hospitals Donate or Volunteer Contact Us ... Diagnostic Services Atrial Fibrillation Surgery Pacemakers and Defibrillators Find a Physician Request an Appointment Patient and Visitor Information ... Heart Rhythm Disorders Surgical Treatment for Atrial Fibrillation Atrial fibrillation is the most common type of abnormal heart rhythm. With atrial fibrillation, electrical impulses don't follow a normal pathway through the heart. As a result, the heart doesn't beat properly or pump blood correctly. Atrial fibrillation can lead to: Blood clots Chronic fatigue Stroke Heart failure Heart attack Death View a Flash movie about atrial fibrillation. University of Chicago Hospitals Cardiac Center heart surgeons have more experience than other Chicago area surgeons at performing the latest techniques to treat atrial fibrillation. Our surgeons are actively researching better treatments for the condition, and have developed some of the newest techniques being used to treat this common problem. Intra-Operative Radiofrequency Ablation for Atrial Fibrillation (Modified Maze Procedure) University of Chicago cardiac surgeons are leaders in performing radiofrequency ablation during surgery to treat atrial fibrillation. This innovative approach uses radiofrequency waves (modified electrical energy) to create small scars on the heart's surface. These scars stop the erratic impulses of atrial fibrillation by directing the impulses to follow a normal electrical pathway through the heart.

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