Copyright © Philip M. Parker, INSEAD. Terms of Use.
Definition: Electrocardiogram |
ElectrocardiogramNoun1. A graphical recording of the cardiac cycle produced by an electrocardiograph. Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. |
| Domain | Definitions |
Health | Measurement of electrical activity during heartbeats. (references) |
Medicine | The tracing made by an electrocardiograph used to determine abnormality in the heart muscle ; recording on a special paper by an electrocardiograph, of the electrical impulses of the heart muscle and thus verifying whether the heart is working normally or not. Source: European Union. (references) |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
An Electrocardiogram (abbreviated as either ECG or EKG) is graphic produced by an electrocardiograph, which records the changes in the electrical current in the heart during heartbeats in the form of a continuous strip graph. The results of the ECG are used to tell whether the heart is performing normally or suffering from abnormalities (eg.extra or skipped heartbeats - Cardiac arrhythmia).
A typical ECG tracing of a normal heartbeat consists of a p wave, a qrs complex and a t wave. The p wave is the electrical signature of the atrial contraction. Both the left and right atria contract simultaneously. The qrs complex corresponds to the contraction of the ventricle, which is much more forceful than that of the atria and results in a much greater ECG deflection. The t wave is the repolarization of the ventricles. Electrically, the cardiac muscle cells are like loaded springs. A small impulse sets them off, they depolarize and contract. Setting the spring up again is repolarization (more at action potential).
A typical ECG report shows the cardiac cycle from 12 different vantage points, like viewing the event elecrically from 12 different directions. Understanding the usual and abnormal directions, or vectors, of depolarization and repolarization yields important diagnostic information. The directions are known as leads. The inferior leads are II, III and aVF, the lateral leads are I and aVL. The chest, or anterior leads are V1 through V6. aVR is rarely used for diagnostic information, but indicates if the ECG leads were placed correctly on the patient. Inferior, lateral and anterior refer to portions of the heart. The inferior leads record events from the apex of the left ventricle. The lateral and anterior leads record events from the left wall and front walls of the left ventricle, respectively. The right ventricle is small and electrically weak. It leaves only a small imprint on the ECG, making it more difficult to see changes in the right ventricle on the ECG.
The device has become so familiar with its depiction in various television medical dramas to the point where the reading of no cardiac electrical activity nicknamed flatline is often used as a symbol of death or at least extreme medical peril. This is technically known as asystole.
See also: cardiac arrest - advanced cardiac life support
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Electrocardiogram."
Synonym: ElectrocardiogramSynonym: cardiogram (n). (additional references) |
Crosswords: Electrocardiogram |
| Specialty definitions using "electrocardiogram": Angina Pectoris, Variant ♦ CARDIOPULMONARY TECHNOLOGIST, cardiovascular technologis ♦ ecg technician, eeg technologis, ekg technicia, ELECTROCARDIOGRAPH TECHNICIAN, ELECTROENCEPHALOGRAPHIC TECHNOLOGIST ♦ Intra-Aortic Balloon Pumping ♦ PHYSICIAN ASSISTANT, POLYSOMNOGRAPHIC TECHNICIAN, polysomnographic technologis ♦ stress technicia, STRESS TEST TECHNICIAN ♦ T-wave ♦ U-wave. (references) |
| Domain | Title |
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Source: compiled by the editor from various references; see credits. | |
| Thumbnail | Description & Credit | Thumbnail | Description & Credit |
 | An electrocardiogram is registered. / WHO p.Credit: National Library of Medicine; photo by P. Almasy.. |  | Physiology : Early Electrocardiogram.Credit: National Library of Medicine. |
Source: compiled by the editor from various references; see credits. | |||
| Subject | Topic | Quote |
Health | Electrocardiogram (ECG or EKG). A record of the electrical activity of the heart. (references) | |
However, the electrocardiogram is the most precise method for diagnosing the arrhythmia. (references) | ||
An electrocardiogram (ECG or EKG) is a graphic record of the electrical activity of the heart as it contracts and rests. (references) | ||
Source: compiled by the editor from ICON Group International, Inc.; see credits. | ||
| "Electrocardiogram" is generally used as a noun (singular) -- approximately 100.00% of the time. "Electrocardiogram" is used about 26 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted) |
| Parts of Speech | Percent | Usage per 100 Million Words | Rank in English |
| Noun (singular) | 100% | 26 | 68,323 |
Source: compiled by the editor from several corpora; see credits.
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
electrocardiogram | 269 |
electrocardiogram jelly k water y | 9 |
electrocardiogram interpretation | 5 |
electrocardiogram machine | 4 |
boy electrocardiogram | 3 |
electrocardiogram policy procedure | 3 |
electrocardiogram lead placement | 2 |
reading electrocardiogram | 2 |
| Source: compiled by the editor from various references; see credits. | |
| Language | Translations for "electrocardiogram"; alternative meanings/domain in parentheses. | |
Albanian | elektrokardiogramë. (various references) | |
Arabic | الصورة البيانية الكهربائية للقلب. (various references) | |
Bulgarian | електрокардиограма. (various references) | |
Chinese | 心"图. (various references) | |
Czech | elektrokardiogram. (various references) | |
Danish | elektrokardiogram (cardiogram, electro-cardiogram). (various references) | |
Dutch | Elektrocardiogram (electro-cardiogram), electrocardiogram (electro-cardiogram). (various references) | |
Farsi | ثبت ضربان قلب بوسیله برق . (various references) | |
French | électrocardiogramme (electro-cardiogram). (various references) | |
German | elektrokardiogramm (electro-cardiogram). (various references) | |
Greek | ηλεκτροκαρδιογράφημα (electro cardiogram, electro-cardiogram). (various references) | |
Hebrew | רשמת לב חשמלית. (various references) | |
Hungarian | elktrokardiogram, elektrokardiogram. (various references) | |
Italian | elettrocardiogramma (electro-cardiogram). (various references) | |
Korean | 심 도 (electrocardiographic). (various references) | |
Pig Latin | electrocardiogramay.(various references) | |
Portuguese | electrocardiograma (electro-cardiogram), análise eletrolítica. (various references) | |
Russian | электрокардиограмма. (various references) | |
Serbo-Croatian | elektrokardiogram. (various references) | |
Spanish | electrocardiograma (electro-cardiogram). (various references) | |
Swedish | elektrokardiogram. (various references) | |
Turkish | elektrokardiyogram, e.k.g., kâlp grafiği. (various references) | |
Ukranian | електрокардіограма (electrocardiograph). (various references) | |
| Source: compiled by the editor from various translation references. | ||
Derivations | |
Words beginning with "electrocardiogram": electrocardiograms. (additional references) | |
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"Electrocardiogram" is suggested in spellcheckers for the following: electrotardiogram. (additional references) | |
| Source: compiled by the editor, based on several corpora (additional references). | |
| # of Phoneme Matches | Pronunciation | Word(s) rhyming with "electrocardiogram" (pronounced ule'ktrōkÄ"rdēugra'm) |
| 5 | -u g r a' m | anagram, Centigram, diagram, epigram, histogram, hologram, kilogram, logogram, milligram, monogram, sonogram, telegram. |
| 4 | -g r a' m | cablegram, engram, mammogram, microgram, program, programme, reprogram. |
| 3 | -r a' m | diaphragm, Wolfram. |
Source: compiled by the editor (additional references); see credits. | ||
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-a-c-c-d-e-e-g-i-l-m-o-o-r-r-r-t" | |
-5 letters: dermatologic. | |
| Words containing the letters "a-a-c-c-d-e-e-g-i-l-m-o-o-r-r-r-t" | |
+1 letter: electrocardiograms. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)45 6C 65 63 74 72 6F 63 61 72 64 69 6F 67 72 61 6D |
| Leonardo da Vinci (1452-1519; backwards) (references)
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| American Sign Language (origins from 1620-1817 in Italy and, especially, France) (references)
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| Semaphore (1791, in France) (references)
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| Braille (1829, in France) (references)
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Morse Code (1836) (references). .-.. . -.-. - .-. --- -.-. .- .-. -.. .. --- --. .-. .- -- |
| Dancing Men (Sir Arthur Conan Doyle, 1903) (references)
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Binary Code (1918-1938, probably earlier) (references)01000101 01101100 01100101 01100011 01110100 01110010 01101111 01100011 01100001 01110010 01100100 01101001 01101111 01100111 01110010 01100001 01101101 |
HTML Code (1990) (references)E l e c t r o c a r d i o g r a m |
ISO 10646 (1991-1993) (references)0045 006C 0065 0063 0074 0072 006F 0063 0061 0072 0064 0069 006F 0067 0072 0061 006D |
| British Sign Language (Fingerspelling, BSL; 1992, British Deaf Association Dictionary of British Sign Language) (references)
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Encryption (beginner's substitution cypher): (references)3978716986848169678470758173846779 |
| 1. Definition 2. Synonyms 3. Crosswords 4. Usage: Commercial | 5. Images: Photo Album 6. Quotations: Non-fiction 7. Usage Frequency 8. Expressions: Internet | 9. Translations: Modern 10. Derivations 11. Rhymes 12. Anagrams | 13. Orthography 14. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
