| electrocardiogram | <cardiology, investigation> An recording of the electrical activity of the heart on a moving strip of paper. The electrocardiogram detects and records the electrical potential of the heart during contraction. Acronym: ECG (13 Nov 1997) |
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| electrocardiograph | <apparatus> An instrument for recording the potential of the electrical currents that traverse the heart and initiate its contraction. (05 Mar 2000) |
| electrocardiographic complex | <cardiology, physiology> A deflection or group of deflections in the electrocardiogram. (05 Mar 2000) |
| electrocardiographic wave | <cardiology, physiology> A deflection of special shape and extent in the electrocardiogram representing the electric activity of a portion of the heart muscle. (05 Mar 2000) |
| electrocardiography | <procedure> The making of graphic records of the variations in electrical potential caused by electrical activity of the heart muscle and detected at the body surface, as a method for studying the action of the heart muscle. (18 Nov 1997) |
| electrocardiophonogram | The record obtained by electrocardiophonography. (05 Mar 2000) |
| electrocardiophonography | Method of electrically recording the heart sounds. Origin: electro-+ G. Kardia, heart, + phone, sound, + grapho, to write (05 Mar 2000) |
| electrocauterization | Cauterization by passage of high frequency current through tissue or by metal that has been electrically heated. (05 Mar 2000) |
| electrocautery | <procedure> The cauterisation of tissue using electric current to generate heat. (27 Sep 1997) |
| electrocerebral inactivity | Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity over 2 uv from symmetrically placed electrode pairs 10 or more centimeters apart, and with interelectrode resistance between 100 and 10,000 ohms; if such a record is present for 30 minutes in a clinically brain dead adult and if drug intoxication, hypothermia, and recent hypotension have been excluded, the diagnosis of cerebral death is supported. Synonym: electrocerebral inactivity, flat electroencephalogram, isoelectric electroencephalogram. (05 Mar 2000) |
| electrocerebral silence | Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity over 2 uv from symmetrically placed electrode pairs 10 or more centimeters apart, and with interelectrode resistance between 100 and 10,000 ohms; if such a record is present for 30 minutes in a clinically brain dead adult and if drug intoxication, hypothermia, and recent hypotension have been excluded, the diagnosis of cerebral death is supported. Synonym: electrocerebral inactivity, flat electroencephalogram, isoelectric electroencephalogram. (05 Mar 2000) |
| electrochemical | Of or pertaining to electrochemistry. Source: Websters Dictionary (01 Mar 1998) |
| electrochemical gradient | A measure of the tendency of an ion to move passively from one point to another, taking into consideration the differences in its concentration and in the electrical potentials between the two points; commonly expressed as the additional voltage needed to achieve equilibrium. (05 Mar 2000) |
| electrochemical potential | <chemistry> Defined as the work done in bringing 1 mole of an ion from a standard state (infinitely separated) to a specified concentration and electrical potential. Measured in joules/mole. More commonly used to measure the electrochemical potential difference between two points (e.g. Either side of a cell membrane), thus sidestepping the rather abstract concept of a standard state. If the molecule is uncharged or the electrical potential difference between two points is zero, the electrochemical potential reduces to the chemical potential difference of the species. at equilibrium, the electrochemical potential difference (by definition) is zero, the situation can then be described by the Nernst equation. (18 Nov 1997) |
| electrochemical sensor | <equipment> A type of biosensor, in which a biological process is harnessed to and measured by an electrical sensor system. (14 Nov 1997) |