Electrocardiagram (ECG / EKG) for DrDAQ Data Logger


Posted on Feb 6, 2014

An electrocardiogram or ECG (also known as EKG ” abbreviated from the German word Elektro-Kardiographie), is an electrical recording of the heart and is used in the investigation of heart disease. This application makes use of a DrDAQ Data Logger to read and store electrocardiograms. British physiologist Augustus D. Waller was the pioneer of ele


Electrocardiagram (ECG / EKG) for DrDAQ Data Logger
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ctrocardiography and in 1887 published the first human electrocardiogram. Yet in 1911 Waller said, "I do not imagine that electrocardiography is likely to find any very extensive use in the hospital. It can at most be of rare and occasional use to afford a record of some rare anomaly of cardiac action. " However, just 13 years later, the Nobel Prize in Medicine was awarded to Dutch physiologist Willem Einthoven, who transformed this curious physiologic phenomenon into an indispensable clinical recording device that is still used today. The electrocardiogram, or ECG / EKG is a surface measurement of the electrical potential generated by electrical activity in cardiac tissue. Current flow, in the form of ions, signals contraction of cardiac muscle fibers leading to the heart`s pumping action. The ECG is a valuable, non invasive diagnostic tool which was first put to clinical use in 1913 with Einthoven`s invention of the string galvanometer. The results below show a reproduction of one of Einthoven`s original traces. Einthoven`s recording is known as the "three lead" ECG, with measurements taken from three points on the body (defining the "Einthoven triangle" ” an equilateral triangle with the heart at the centre. ) The difference between potential readings from L1 and L2 is what is used to produce the output ECG trace. The L3 connection establishes a common ground for the body and the recording device (oscilloscope. )...




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