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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.
Date/Time Thumbnail Dimensions User Comment; current: 17:50, 9 February 2010: 654 × 390 (1 KB): Wgabrie: I made the file size smaller: I removed the Inkscape extensions, combined same-size paths, and snapped the grid to whole number coordinates.
Schematic representation of a normal sinus rhythm EKG wave. In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200 ms in duration.
Diagram of electrocardiogram paper: Date: 12 May 2007: Source: This file was derived from: ECG Paper.jpg: Author: User:Markus Kuhn modified trace by User:Stannered of original PowerPoint JPEG by User:MoodyGroove: Permission (Reusing this file) PD original: Other versions
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You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...
The term normal sinus rhythm (NSR) is sometimes used to denote a specific type of sinus rhythm where all other measurements on the ECG also fall within designated normal limits, giving rise to the characteristic appearance of the ECG when the electrical conduction system of the heart is functioning normally; however, other sinus rhythms can be ...