Premature ventricular complexes (PVCs) are extra heartbeats originating from the heart’s lower chambers, potentially causing palpitations or fluttering sensations. While occasional PVCs are common, ...

The ECG shows sinus rhythm at 100 to 110 beats per minute with an isolated (conducted) premature atrial contraction and a ventricular couplet. The QRS duration is about 0.15 sec and the frontal plane ...

Polymorphic ventricular tachycardia is an abnormal heart rhythm where the bottom chambers of your heart beat too quickly. People with severe cases may experience sudden cardiac arrest. Conditions that ...

This ECG shows atrial fibrillation with an uncontrolled ventricular rate. There are two QRS complexes that become wide in a right bundle branch block pattern. This can occur at fast heart rates when ...

Depending on how the heart’s electrical activity appears on an EKG, a doctor may diagnose coarse or fine ventricular fibrillation (VF). Coarse VF appears as larger waves on an EKG compared with the ...

Your heart is divided into a left and a right side. The right side of your heart pumps blood to your lungs to receive oxygen. The left side pumps the oxygenated blood to the rest of your body. Right ...