Atrial fibrillation is a condition of an irregular and rapid heartbeat that results in poor blood flow throughout the body. In a normal heart, electrical impulses originating in the right atria signal the two upper chambers (called the atria) and...
Maintenance of normal heart rate and heart rhythm depend, in part, on the balance of electrolytes in your body. Not surprisingly, high or low levels of these vital nutrients upset the conduction system of your heart, leading to or worsening...
Atrial fibrillation is a condition in which nerve impulses that regulate heart rate become irregular and cause a disorganized heart rhythm in the atria -- the upper chambers of the heart. This condition occurs in 3 to 5 percent of people over age...
Atrial fibrillation is a condition of irregular heartbeats that causes poor blood flow to the body. Symptoms include heart palpitations, shortness of breath, chest pain, confusion and weakness. Atrial fibrillation may be caused by previous...
According to the American Heart Association, during atrial fibrillation the heart's two small upper chambers (the atria) quiver instead of beating effectively, causing blood to not pump completely out of them, so it may pool and clot. Patients...
Vitamin C, a water soluble essential nutrient, is one of your body's most important antioxidant substances and also contributes to the formation of connective tissues. Atrial fibrillation, a condition characterized by an irregular rhythm of...
Atrial fibrillation is the most common irregular heart rhythm, according to the Cleveland Clinic. During atrial fibrillation, many different impulses rapidly fire at once, causing a very fast, chaotic rhythm in the atria. The treatment goals...
Caffeine is among the most widely consumed stimulants in the world. According to Medline Plus of the National Institutes of Health, caffeine has many effects on the body, including central nervous system stimulation, which can make you more alert...
Atrial fibrillation is an irregular, rapid heartbeat that prevents your heart from pumping adequate amounts of blood to your body. According to the American Heart Association, 2.2 million Americans have this heart disorder. Because atrial...
Atrial fibrillation is a common heart condition. It occurs when the heart muscle does not properly contract and push the blood out of the heart's two upper chambers. Instead of a forceful contraction, the heart may flutter or not contact fully. It...
Atrial fibrillation is an irregular heart rhythm in which the heart quivers instead of beating regularly. This occurs because the command center of the heart fails to coordinate activity with the pumping center. People may thus experience...
Episodes of atrial fibrillation, which involve a rapid heartbeat and poor blood flow, can be caused by dietary and lifestyle factors. Treatment usually involves medications that alter your heart's electrical impulses, but you can also prevent...
Atrial fibrillation (AF), also called A Fib, is an irregular, usually rapid heart rhythm (arrhythmia), that originates in the upper area (atria) of the heart due to abnormal electrical cardiac impulses that make the heart "quiver." Consequently,...
Atril fibrillation, or a fib, is the most common irregular heart rhythm. It can be related to heart disease, stress, excessive caffeine or alcohol use or electrolyte imbalances. When the heart is in a fib, it is not beating efficiently and is...
Atrial fibrillation represents one of the most common forms of arrhythmia or irregular heartbeat. According to the National Heart, Lung and Blood Institute, atrial fibrillation occurs when the electrical signals that govern heart rate and rhythm...
Atrial fibrillation is characterized by an irregular and unusually fast heart rate. A normal resting heart rate ranges from 60 to 100 beats per minute; someone with atrial fibrillation often has a heart rate of 140 or more beats per minute. Atrial...
Atrial fibrillation, or A-fib, is a heart condition in which your heartbeat is fast or chaotic and an insufficient amount of blood is pumped to your body. If you have A-fib, your doctor may encourage certain types of exercise. Although,...
Your heart is an incredibly dynamic organ. Capable of recognizing and responding to changes in your behavior and physical activity, a healthy heart can adjust its function to meet most demands placed upon it. As we age, damage to your heart lead...
Atrial fibrillation is a condition in which the the atria, which are the top two chambers of the heart, beat erratically. The purpose of the atria is to propel blood into the ventricles, which pump blood to the lungs for oxygenation and also pump...
Atrial fibrillation, also known as cardiac arrhythmia or irregular heartbeat, occurs when your heart's upper chambers beat out of rhythm with the lower chambers. You may experience heart palpitations, shortness of breath, a rapid drop in blood...
If you have a rapid, racing heartbeat and feelings of weakness, you may have atrial fibrillation. The most common arrhythmia originating in the atria, the upper chambers of the heart, atrial fibrillation has many causes. Abnormal electrical...
Atrial fibrillation is an abnormal heartbeat, or arrhythmia, that is characterized by the rapid beating of the upper two chambers of the heart, or the atria. Atrial fibrillation is the most common arrhythmia and can lead to heart failure, heart...
If you feel your heart racing and you become lightheaded and short of breath, you may be having an attack of atrial fibrillation, also known as cardiac arrhythmia. This condition occurs when your heart's upper and lower chambers beat out of synch....
Atrial fibrillation, or cardiac arrhythmia, is a confusion in the electrical connection between the upper and lower chambers of your heart. When this happens you may feel dizzy and short of breath, and your heart may seem like it's skipping beats....
Educate yourself about the physical symptoms that may accompany atrial fibrillation. Not everyone who has this type of rapid, irregular heartbeat shows outward symptoms of the disorder. People who do feel something abnormal going on with their...
Atrial fibrillation is a type of heart arrhythmia that causes a fast and irregular pulse. This disorder occurs when the top heart chambers, or atria, pulse in a chaotic way due to abnormal functioning of the heart's electrical system. Atrial...
Atrial fibrillation, or a-fib, is an abnormal rhythm of the heart. When the heart is in a-fib, the top two chambers of the heart beat chaotically and independently from the bottom two chambers. This causes the heart to be less efficient in pumping...
Atrial fibrillation refers to a cardiac arrhythmia, or abnormal heartbeat. During an attack of arrhythmia, you may feel heart palpitations or a rapid heartbeat, shortness of breath and lightheadedness. This condition can be triggered by an...
Vitamin D has long been recognized as an important vitamin for synthesizing calcium to build strong bones. Products such as milk and juice are often fortified with it. But new information has linked vitamin D to atrial fibrillation, a cardiac...
Mitral stenosis is a vavular heart disease denoting the narrowing of the heart's mitral valve. Learn more about mitral stenosis and the heart in this health video.
