What is an ECG? Asystole Pulseless Electrical Activity 3° AV Block 2° AV Block Type II 2° AV Block Type I 1° AV Block Torsades de Pointes Ventricular Fibrillation Ventricular Tachycardia Premature Ventricular Contractions Wolff Parkinson White Multifocal Atrial Tachycardia Premature Atrial Contractions AV Nodal Reentry Tachycardia Atrial Flutter Atrial Fibrillation Normal Sinus Rhythms Sinus Arrhythmia
What is an ECG?
What is it?An electrocardiogram — abbreviated as EKG or ECG — is a test that measures the electrical activity of the heartbeat. With each beat, an electrical impulse (or “wave”) travels through the heart. This wave causes the muscle to squeeze and pump blood from the heart. A normal heartbeat on ECG will show the timing of the top and lower chambers.
The right and left atria or upper chambers make the first wave called a “P wave” — following a flat line when the electrical impulse goes to the bottom chambers. The right and left bottom chambers or ventricles make the next wave called a “QRS complex.” The final wave or “T wave” represents electrical recovery or return to a resting state for the ventricles.