Arrhythmia News and Research

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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.
Silicone wires in newer defibrillators less reliable than older polyurethane-insulated leads

Silicone wires in newer defibrillators less reliable than older polyurethane-insulated leads

New data supports safety of ranolazine but not its effectiveness

New data supports safety of ranolazine but not its effectiveness

Ranolazine safe but not effective in reducing major cardiac events in ACS patients

Ranolazine safe but not effective in reducing major cardiac events in ACS patients

Corticosteroids after cardiac surgery lower risk of atrial fibrillation

Corticosteroids after cardiac surgery lower risk of atrial fibrillation

Technology to make implantable devices safe for MRI

Technology to make implantable devices safe for MRI

African Americans may be at higher risk of heart failure because of racial variations in heart muscle's pumping ability

African Americans may be at higher risk of heart failure because of racial variations in heart muscle's pumping ability

Irregular heartbeat linked to genetic mutation

Irregular heartbeat linked to genetic mutation

Statins slow the progression of aortic valve stenosis

Statins slow the progression of aortic valve stenosis

Psychological effects of heart surgery

Psychological effects of heart surgery

New study finds endurance athletes with ventricular arrhythmias have dysfunctional right ventricles

New study finds endurance athletes with ventricular arrhythmias have dysfunctional right ventricles

Boston Scientific publishes results of Dual-Chamber Pacing study

Boston Scientific publishes results of Dual-Chamber Pacing study

Safety of t-PA clot-busting therapy questioned

Safety of t-PA clot-busting therapy questioned

Underlying causes, frequencies, and outcomes of dilated cardiomyopathy

Underlying causes, frequencies, and outcomes of dilated cardiomyopathy

Researchers patent novel method for measuring blood pressure in the heart

Researchers patent novel method for measuring blood pressure in the heart

Latest studies reveal more risks with Vioxx

Latest studies reveal more risks with Vioxx

Elderly atrial fibrillation patients lack adequate application of current management guidelines

Elderly atrial fibrillation patients lack adequate application of current management guidelines

Useful insights into mechanisms of catecholaminergic polymorphic ventricular tachycardia

Useful insights into mechanisms of catecholaminergic polymorphic ventricular tachycardia

Automated external defibrillators, reliability and clinical benefits

Automated external defibrillators, reliability and clinical benefits

New way of delivering corrective genes holds promise for hereditary diseases of the heart

New way of delivering corrective genes holds promise for hereditary diseases of the heart

Older patients with atrial fibrillation have higher rates of major hemorrhage in the brain

Older patients with atrial fibrillation have higher rates of major hemorrhage in the brain