Narrow-complex tachyarrhythmias are rapid heart rhythms originating in the upper heart chambers, characterized by a QRS duration of less than 120 milliseconds on an EKG. These arrhythmias can be ...

A sinus arrhythmia refers to a problem with the sinus node of the heart. This controls the rhythm of the heart and can be fast (sinus tachycardia) or slow (sinus bradycardia). This article looks at ...

Heart rhythm problems can sometimes become very serious, especially when they start in the lower chambers of the heart. One ...

Heart beats multiple times in a minute and we more than often do not realise the complexity of this system. Heart is like the CPU of the body and if this organ doesn’t function well then there is ...

Having an accelerated junctional rhythm occurs when the atrioventricular node in your heart beats too quickly. It happens as a result of damage to your heart’s primary natural pacemaker. There’s no ...

In a normal heart rhythm, your heart beats in a steady, even way. The upper part of your heart (atria) squeezes and pushes blood to the lower part (ventricles), pumping blood and oxygen out to the ...

AliveCor, Inc. announced today that the U.S. Food and Drug Administration (FDA) has granted the company clearance for two new algorithms giving users instant feedback on their electrocardiogram (ECG) ...