If you have tachycardia, it means you have a faster than normal heart rate. The normal rate for a healthy adult heart is between 60 and 100 beats per minute at rest. Tachycardia causes the heart rate in the upper or lower or both chambers to...
Tachycardia is a heart rate that is faster than normal. It can affect any or all your four heart chambers. Sometimes, tachycardia may cause no symptoms, while other times it can disrupt the heart enough to cause a heart attack. Causes of...
Tachycardia is a condition in which the heart beats abnormally fast--more than 100 beats per minute. It is caused by abnormal electrical impulses sent from just above the lower chambers of the heart--called supraventricular tachycardia--or from...
Tachycardia is a condition that causes your resting heart rate to elevate to higher than normal, which for an adult at rest is 60 to 100 times per minute. Symptoms include dizziness, light-headedness, elevated pulse rate, palpitations and chest...
Sustained periods of tachycardia, or rapid heartbeat, aren't good for your heart. Tachycardia is a type of irregular heartbeat classified as an arrhythmia caused by an interruption of the normal electrical signals regulating your heart rate....
Tachycardia is a condition characterized by a heart rate that is too rapid. This condition is caused by problems with the electrical signals that tell the ventricles in the heart to contract. Some children are born with tachycardia, and it can...
Allergic reactions that produce tachycardia, or heart trouble characterized by a racing pulse, may threaten life-sustaining body functions. A rare condition called anaphylaxis can arise from normal allergy symptoms to place the respiratory and...
Tachycardia, or prolonged elevated heart rate, is a type of arrhythmia. An arrhythmia, according to the National Heart, Lung and Blood Institute, is a dysfunctional heart rate or rhythm. If you have an arrhythmia, your heart may beat too quickly,...
Acetylcholine is a molecule released by nerves. It signals other nerves and muscles to perform a function. It is released by nerves to signal skeletal muscles in the arm to contract. It is also has functions in the brain, and in the part of the...
Tachycardia, or elevated heart rate, is a type of arrhythmia, or a disorder of heart rate or rhythm. Arrhythmias, notes the National Center for Biotechnology Information, are caused by dysfunction in the heart's electrical conduction system....
Fish oil has been the subject of many medical studies that have confirmed its benefits for various serious diseases, such as high blood pressure and high cholesterol. It helps to reduce inflammation and improves symptoms in patients with...
Ventricular tachycardia (VT) is a lethal cardiac arrhythmia that is very common after a heart attack. The risk of VT is highest in the first several hours after a heart attack. VT often degenerates into ventricular fibrillation (VF), which is 100...
Tachycardia is a form of arrhythmia during which the heart beats very fast. It may occur when there is a problem in the electrical impulses that signal the heart to contract and expand. Weak heart muscles, overactive thyroid gland, abnormal blood...
Tachycardia is a rapid heart beat. Your heart normally beats from 60 to 100 times per minute when you are in a resting state of non-exertion. A heart rate of more than 100 beats per minute at rest is considered too fast, and is a case of...
Tachycardia is a medical term used to describe a heart rate in persons over 15 years of age of over 100 beats per minute. Sometimes, it is necessary for your heart rate to be elevated, but at other times, it can be life-threatening. During...
Tachycardia is an arrhythmic disorder of the heart that causes your heart to beat too fast. There are a number of causes of tachycardia, including a deficiency in vitamin B-12. Vitamin B-12 deficiency may lead to many other symptoms, including...
Coffee, tea, soft drinks, chocolate and some medications contain varying amounts of caffeine. While a small amount of this chemical increases your alertness with few noticeable side effects, even a little too much can cause discomfort. Anxiety,...
Supraventricular tachycardia, also known as paroxysmal supraventricular tachycardia, or PSVT, is a condition characterized by occasional bouts of rapid heart rate. The condition occurs when the electric impulse that travels through the heart to...
When your heartbeat, blood pressure and blood sugar levels stay steady, you have magnesium to thank in part. Magnesium is a mineral responsible for maintaining muscle and nerve function. If you do not have enough magnesium in your body, you can...
Ventricular tachycardia, or rapid heart rate, can occur suddenly during exercise regardless of your age, sex or fitness level. It can appear with no symptoms or complications. However, ventricular tachycardia disrupts the heart's normal function,...
Postural tachycardia syndrome is a condition in which the blood volume going to your heart drops below normal and your heartbeat rises when you stand up after being in a lying-down position. You may feel dizzy and experience tachycardia that...
Although the heart rate speeds up during exercise, it should gradually return to its normal pace after ending your exercise routine. However, menopause can trigger tachycardia episodes, where the heart rate is faster than normal in the upper,...
Potassium is an electrolyte, or a mineral in the body that has an electric charge. When the potassium that is in the bloodstream reaches the kidneys, they will reabsorb most of this mineral, trying to keep as much as possible in the bloodstream,...
Exercise-induced tachycardia in elite athletes can be either benign or malignant. A normal response to exercise is an elevated sinus tachycardia and is perfectly safe. However, ventricular tachycardia is a malignant arrhythmia that can lead to...
The human heart is a complex electrical organ with its own switch-like pacemaker and “wiring.” Your heart rate is influenced by a variety of factors, including impulses from your nervous system and alterations in the levels of...
For most people, standing up triggers a normal physiological response, including constriction of the vascular system and increased heart rate. These responses are intended to restore blood flow and subsequently, homeostasis to the extremities....
The average heart rate for a healthy adult falls between 60 and 100 beats per minute. A rapid heart rate, or tachycardia, is a condition in which your heart beats more than 100 times per minute while you are at rest. Tachycardia, one of several...
Under normal circumstances, average heart rates for non-athletes fall within a relatively narrow range of roughly 60 to 100 beats per minute. Temporary elevations of these rates commonly occur during exercise and other forms of physical activity....
A fast pulse is called tachycardia. Tachycardia is an arrhythmia (abnormal heart rhythm) defined as a heart rate greater than 100 beats per minute. Tachycardia can be caused by a number of factors, such as exercise, pain, fear, anxiety,...