An arrhythmia is a problem with the speed or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia. A heartbeat that is too slow is called bradycardia. Most arrhythmias are harmless, but some can be serious or even life threatening. When the heart rate is too slow, too fast, or irregular, the heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart, and other organs.
Scientists at the University of Navarra (Spain), in collaboration with clinicians from the University Hospital of Donostia, have identified two biomarkers associated with the risk of suffering atrial fibrillation, a cardiac ailment that affects more than 33.5 million people in the world.
Combining a wealth of information derived from previous studies with data from more than 500 patients, an international team led by researchers from Johns Hopkins has developed a computer-based set of rules that more accurately predicts when patients with a rare heart condition might benefit--or not--from lifesaving implanted defibrillators.
Although smart wristbands are popular fashion gadgets for monitoring heart rate and physical activity, they are usually not sophisticated enough to provide specific and accurate information about potential health problems of the wearer.
A day case catheter ablation procedure which includes only the bare essentials and delivers the same outcomes could slash waiting lists for atrial fibrillation patients, according to late-breaking results from the AVATAR-AF trial presented today at EHRA 2019, a European Society of Cardiology congress.
Should an abnormal heart rhythm detected by a smartwatch in otherwise healthy young adults be treated? Are the benefits of this new technology worth the risks? Where is the technology headed?
Atrial fibrillation is a common arrhythmia that affects an estimated 30 million people worldwide. New research shows that catheter ablation, a common cardiovascular procedure, appears no more effective than drug therapy to prevent strokes, deaths and other complications in patients with atrial fibrillation.
Nearly 3 million Americans are living with atrial fibrillation (AFib), which is described as quivering or irregular heartbeat (arrhythmia).
Researchers have developed a small, flexible, elastic skeleton bound to two piezoelectric composites, which uses the electrical activity of the heart for power.
In addition to regulating the body's fluid balance, by excreting greater or smaller amounts of urine, the kidneys also maintain the proper balance of electrolytes (salts) and the pH (an acid-base equilibrium) within our body.
Sudden death in patients with stable ischemic heart disease is not a common occurrence and is sparsely reported.
Potentially lethal heart conditions may become easier to spot and may lead to improvements in prevention and treatment thanks to innovative new software that measures electrical activity in the organ.
Affecting an estimated one in eight people older than 75, aortic valve stenosis - a narrowing of the heart's main artery - makes the heart work harder to supply the body with blood, potentially limiting patient's activity levels an quality of life. Ultimately, aortic stenosis can lead to stroke, arrhythmia, heart failure and death.
Patients with septic shock who were treated with norepinephrine earlier than patients receiving standard care were more likely to have their blood pressure and shock stabilized within six hours of diagnosis, according to a randomized, double-blind, controlled trial published online in the American Thoracic Society’s American Journal of Respiratory and Critical Care Medicine.
African Americans - especially African American women - have a significantly higher risk of sudden cardiac death during their lifetime than whites, and much of the disparity can be attributed to income and education levels, according to new research in the American Heart Association's journal Circulation.
Adding functional imaging to structural imaging of patients with ventricular tachycardia (VT) has the potential to improve current VT ablation strategies, according to new research published in the January issue of The Journal of Nuclear Medicine.
A team of researchers led by the University of California San Diego has identified a genetic pathway that causes some individuals to develop an abnormal heart rhythm, or arrhythmia, after experiencing a heart attack. They have also identified a drug candidate that can block this pathway.
For the first time, physicians in the Emergency Department have evidence-based recommendations on how best to catch the life-threatening conditions that make some people faint.
Researchers have successfully developed two biomarkers that could help predict the risk of a heart condition and stroke.
Atrial fibrillation is the most common form of heart arrhythmia. About ten per cent of everyone over age 75 develop this condition, in which the two upper chambers of the heart (the atria) beat much faster than the main chambers (the ventricles), creating a fluttering feeling in the chest.
A group of researchers from the departments of Physical Therapy, Medicine and Electronic Engineering of Valencia University and from the innovations group ITACA have just published research into physical exercise as a protector against sudden cardiac death. The study has been published in the 'PlosOne' journal.