(Medical Xpress) -- What we perceive as the beating of our heart is actually the co-ordinated action of more than a billion muscle cells. Most of the time, only the muscle cells from the larger heart chambers ...
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(AP)—Have a heart problem? If it's fixable, there's a good chance it can be done without surgery, using tiny tools and devices that are pushed through tubes into blood vessels.
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(Medical Xpress) -- Cornell scientists, in collaboration with physicists and physician-scientists in Germany, France and Rochester, N.Y., have developed a new -- and much less painful and potentially damaging -- method to ...
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A large-scale trial finds that apixaban, a new anticoagulant drug, is superior to the standard drug warfarin for preventing stroke and systemic embolism in patients with atrial fibrillation. Moreover, apixaban results in ...
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(Medical Xpress) -- A family of proteins named after Popeye play an essential role in allowing the heart to respond to stress, according to a study published today in the Journal of Clinical Investigation. The fi ...
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Micah True, legendary ultra-marathoner, died suddenly while on a routine 12-mile training run March 27, 2012. The mythic Caballo Blanco in the best-selling book, Born to Run, True would run as far as 100 miles in a day. On ...
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(Medical Xpress)—A virtual heart, developed at The University of Manchester, is revealing new information about one of the world's most common heart conditions.
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Within a few years, a new generation of easy-to-use blood-thinning drugs will likely replace Coumadin for patients with irregular heartbeats who are at risk for stroke, according to a journal article by Loyola University ...
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New research has the potential to revolutionize the treatment of atrial fibrillation (AF), a condition affecting a quarter of a million Canadians which is expected to strike even more in the coming years, as the Canadian ...
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While previous studies have linked vitamin D deficiency to an increased risk for cardiovascular disease, new research at the Intermountain Medical Center Heart Institute shows that too much vitamin D can lead to the onset ...
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Clinicians from the University of Utah report the death of a patient who received a mild brain injury from a ground-level fall while taking the new anticoagulant dabigatran etexilate for non–valve related atrial fibrillation. ...
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According to new research from Brigham and Women's Hospital (BWH), light-to-moderate alcohol consumption was associated with a lower risk of stroke in women.
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An international multi-site trial has launched to determine whether a common anti-inflammatory drug can reduce heart attacks, strokes, and deaths due to cardiovascular disease in people at high risk for them. This study is ...
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European regulators have approved a crucial new anticlotting drug, Eliquis, for preventing strokes and dangerous clots in the circulatory system.
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Researchers have found new evidence that metabolic stress can increase the onset of atrial arrhythmias, such as atrial fibrillation (AF), a common heart condition that causes an irregular and often abnormally fast heart rate. ...
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Atrial fibrillation (AF or A-fib) is the most common cardiac arrhythmia (irregular heart beat). It may cause no symptoms, but it is often associated with palpitations, fainting, chest pain, or congestive heart failure. AF increases the risk of stroke; the degree of stroke risk can be up to seven times that of the average population, depending on the presence of additional risk factors (such as high blood pressure). It may be identified clinically when taking a pulse, and the presence of AF can be confirmed with an electrocardiogram (ECG or EKG) which demonstrates the absence of P waves together with an irregular ventricular rate.
In AF, the normal regular electrical impulses generated by the sinoatrial node are overwhelmed by disorganized electrical impulses usually originating in the roots of the pulmonary veins, leading to irregular conduction of impulses to the ventricles which generate the heartbeat. AF may occur in episodes lasting from minutes to days ("paroxysmal"), or be permanent in nature. A number of medical conditions increases the risk of AF, particularly mitral stenosis (narrowing of the mitral valve of the heart).
Atrial fibrillation may be treated with medications to either slow the heart rate to a normal range ("rate control") or revert the heart rhythm back to normal ("rhythm control"). Synchronized electrical cardioversion can be used to convert AF to a normal heart rhythm. Surgical and catheter-based therapies may be used to prevent recurrence of AF in certain individuals. People with AF often take anticoagulants such as warfarin to protect them from stroke, depending on the calculated risk. The prevalence of AF in a population increases with age, with 8% of people over 80 having AF. Chronic AF leads to a small increase in the risk of death. A third of all strokes are caused by AF.
This text uses material from Wikipedia licensed under CC BY-SA
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