In the late 1700s medical researchers learned that muscles produce tiny electric impulses now known as "action potentials." Italian biophysicist, Carlo Matteucci (1811-1868), identified action potentials in a pigeon's heart in 1843 and, in 1856, German...

An electrocardiogram (ECG) is a graphic representation of electrical activity in the heart that conveys information related to cardiac rhythms and the pumping of blood through the chambers of the heart. Electrocardiograms are also termed EKGs. The...

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An electrocardiogram (ECG or EKG, abbreviated from the German Elektrokardiogramm) is a graphic produced by an electrocardiograph, which records the electrical activity of the heart over time. Its name is made of different parts: electro, because it is...

Abstract: Recording of the electrocardiogram by string galvanometer evolved a century ago from wide-ranging advances in physiology, physics, and engineering. Although body surface recordings had been obtained prior to the work of Willem Einthoven, his ingenuity in mathematically correcting capillary electrometer tracings and incorporating...

My electrocardiogram teachers The subject addressed here permits me to acknowledge my teachers and mentors in electrophysiology and electrocardiography. The first of these is Robert Grant, known to me only through his magisterial book on spatial vectorelectrocardiography.1 Electrocardiograms (ECGs) could be displayed as...

When Enorio Branco had crushing chest pain last year, paramedics knew they should bypass the emergency room and rush him straight to a catheterization lab to have a blocked artery cleared immediately.That's because ambulances run by University Hospital in Newark send a cardiologist a full...

When Enorio Branco had crushing chest pain last year, paramedics knew they should bypass the emergency room and rush him straight to a catheterization lab to have a blocked artery cleared immediately.That's because ambulances run by University Hospital in Newark send a cardiologist a full...