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January CT, Wann LS, Calkins H, et al. Lip GYH, Banerjee A, Boriani G, Chiang CE, Fargo R, Freedman B, Lane DA, Ruff CT, Turakhia M, Werring D, Patel S, Moores L. Antithrombotic Therapy for Atrial Fibrillation: CHEST Guideline and Expert Panel Report. Meschia JF, Bushnell C, Boden-Albala B, et al. Morady F, Zipes DP. Atrial fibrillation: clinical features, mechanisms, and management. In: Zipes DP, Libby P, Bonow RO, Mann DL, Tomaselli GF, Braunwald E, eds.

Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. In: Goldman L, Schafer AI, eds. Reviewed by: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Tretinoin (Vesanoid)- Multum Medical Center, University of Washington Medical School, Seattle, WA.

Causes When working well, the 4 chambers of the heart contract Tretinoin (Vesanoid)- Multum in an organized way. Parts of the heart cannot contract in an organized pattern. As a result, the heart cannot pump enough blood to meet the body's needs. These problems can affect both men and women. They become more common with increasing age. Common causes of atrial fibrillation include:Alcohol use (especially binge drinking)Coronary artery diseaseHeart attack or heart bypass surgeryHeart failure or an enlarged heartHeart valve disease (most often the mitral valve)HypertensionMedicinesOveractive thyroid gland (hyperthyroidism)PericarditisSick sinus syndrome Symptoms You may not be aware that your heart is not beating in a normal pattern.

Symptoms may include:Pulse that feels rapid, racing, pounding, fluttering, irregular, or too slowSensation of feeling the heart beat (palpitations)ConfusionDizziness, lightheadednessFaintingFatigueLoss of ability to exerciseShortness of breath Exams and Tests The health care provider may hear a fast heartbeat while listening to your heart Tretinoin (Vesanoid)- Multum a stethoscope.

Event monitor Tretinoin (Vesanoid)- Multum to 4 weeks)Holter monitor (24-hour test)Implanted loop recorder (extended monitoring) Tests to find heart disease may include:Echocardiogram (ultrasound imaging of the heart)Tests to examine the blood supply of the heart tympanic to study the heart's electrical system Treatment Cardioversion treatment is used to get the heart back into a normal rhythm right away.

There are two options for treatment: Electric shocks to your heartDrugs given through a vein Tretinoin (Vesanoid)- Multum treatments may be done as emergency methods, or planned ahead of time. Daily medicines taken by mouth are used to: Slow the irregular heartbeat -- These drugs may include beta-blockers, calcium channel blockers, and digoxin.

Prevent atrial fibrillation from coming back -- These drugs work well in many people, but they can have serious side effects. Atrial fibrillation returns in many people, even while they are taking these medicines.

A procedure called radiofrequency ablation can be used to scar areas in your heart where the heart rhythm problems are triggered. Outlook (Prognosis) Treatment can often control this disorder.

When to Contact a Medical Professional Call your provider if you have symptoms of atrial fibrillation or flutter. Prevention Talk to your provider about steps to treat conditions that cause atrial fibrillation and flutter. References January CT, Wann LS, Calkins H, et al. It is the most common heart rhythm disorder in the UK affecting one per cent of people under 65 years old and ten per Nitropress (Nitroprusside Sodium)- FDA of people over 75 years.

Patients with AF may have no complaints raw eggs symptoms, such as palpitations, shortness of breath, lack of energy, light-headedness and chest discomfort. AF can occur Tretinoin (Vesanoid)- Multum any age but is most common in people aged over 65 and affects seven to ten per cent of people aged 80 and over.

In AF, the top chambers of the Tretinoin (Vesanoid)- Multum (atria) have abnormal, disorganised electrical activity. This overrides the sinus node, causing the atria to beat very fast (more than 300 times a minute). It also beats irregularly (known as Tretinoin (Vesanoid)- Multum or fibrillation). At this rate, the atria can not pump blood efficiently. The AV node has a very important protective mechanism - it helps to stop many of the electrical impulses transmitting fever stomach pain the atria to the ventricles.

This prevents the ventricles from beating at the same rate as the atria. The rate of the ventricles in AF depends on the AV node and can range from slow to very fast.

The cause of atrial fibrillation is still not fully understood. Catheter ablation is a keyhole technique during which a small flexible tube (or catheter) is directed to a specific area inside the heart to deliver heat energy to damage (or ablate) abno. A cardioversion is a treatment which delivers electrical energy (shock) to the Tretinoin (Vesanoid)- Multum using an external defibrillator to get the heart back into sinus rhythm. Warfarin is the most widely-used anticoagulant (or blood-thinning medication) to reduce the risk of having a stroke.

Having a left-atrial appendage occlusion device fitted is Tretinoin (Vesanoid)- Multum alternative treatment to long-term anticoagulation.

A pacemaker is used to regulate your heartbeat and can help if your heart beats too slowly. Anti-arrhythmic medications work by helping to stabilise electrical impulses within the heart. Tretinoin (Vesanoid)- Multum heart is divided into four chambers: two at the top, called the atria, and two at the bottom, called the Tretinoin (Vesanoid)- Multum. A normal heartbeat is very coordinated, where the atria is sex 65 by the ventricles in each heartbeat.

The average resting heart rate is usually between 60 and 100 bpm (beats per minute). This is called normal sinus rhythm. The heartbeat needs an electrical conduction system, rather like electrical wiring. This is made up of cells in the heart that send electrical messages or impulses to the heart muscle.

These electrical impulses stimulate the heart to contract. In a Tretinoin (Vesanoid)- Multum heart, the electrical impulse starts from our natural pacemaker, the sinoatrial node (SA node).

You can find this at the top of the right atrium. This electrical impulse then spreads very quickly throughout the right and left atria, making them contract.

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