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Institutions. University of Leiden. Willem Einthoven (21 May 1860 – 29 September 1927) was a Dutch medical doctor and physiologist. He invented the first practical electrocardiograph (ECG or EKG) in 1895 and received the Nobel Prize in Physiology or Medicine in 1924 for it ("for the discovery of the mechanism of the electrocardiogram"). [1]
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.
In 1887 he used a capillary electrometer to record the first human electrocardiogram. [3] He created the first practical ECG machine with surface electrodes. [4] He lectured on it in Europe and America, often using his dog Jimmy in his ECG demonstrations. [5] Initially Waller did not think electrocardiograms would be useful in hospitals.
Einthoven's triangle. Einthoven's triangle is an imaginary formation of three limb leads in a triangle used in the electrocardiography, formed by the two shoulders and the pubis. [1] The shape forms an inverted equilateral triangle with the heart at the center. It is named after Willem Einthoven, who theorized its existence.
Accordingly, Lewis is considered the "father of clinical cardiac electrophysiology". The first use of electrocardiography in clinical medicine was in 1908. In that year, Thomas Lewis and Arthur MacNalty (later the Chief Medical Officer of the United Kingdom) employed electrocardiography to diagnose heart block. [14]
November 19, 1890. Died. September 11, 1952. Alma mater. University of Michigan. Known for. Cardiology. Frank Norman Wilson (19 November 1890 – 11 September 1952) was an American cardiologist known primarily for his contributions to electrocardiography. [1][2][3][4]
Vectorcardiography was developed by E. Frank in the mid 1950s. [2][3] Since the human body is a three-dimensional structure, the basic idea is to construct three orthogonal leads containing all the electric information. The three leads are represented by right-left axis (X), head-to-feet axis (Y) and front-back (anteroposterior) axis (Z).
Holter monitor. Cardiac monitoring generally refers to continuous or intermittent monitoring of heart activity to assess a patient's condition relative to their cardiac rhythm. Cardiac monitoring is usually carried out using electrocardiography, which is a noninvasive process that records the heart's electrical activity and displays it in an ...