Heart sounds are one tool providers use to assess heart health. Learn about systolic, diastolic, and S1 to S4 heart sounds in ...

Each side of the heart consists of an atrium and a ventricle which are two connected chambers. The atria (plural of atrium) are where the blood collects when it enters the heart. The ventricles ...

It starts in the sinus node, located in the right atrium, and travels through both atria to stimulate contraction. It then goes to the atrioventricular node and travels toward the ventricles to ...

Up to 7% of myxomas arise in the ventricular cavities and are equally divided between the right and left ventricles, and unlike the atria, they are not usually attached to the ventricular septum.

The most serious complications of untreated AFib include the following: Rapid ventricular rate (RVR) is a complication of ...

If left untreated, Afib can lead to stroke, heart failure and premature cardiac death. But fortunately, Afib is treatable and, in some cases, preventable.

Remember that all atrial action potentials must pass through the AV node to reach the ventricle. AV node ablation destroys this connection stopping any atrial activity from reaching the ventricle.

Because the AV node is intermittently (not regularly) refractory, the QRS complexes that are produced when an atrial action potential does reach the ventricles will occur in an “irregularly ...