| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
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| RIP | Respiratory Inversion Point |
| FIGE | field inversion gel electrophoresis |
| FLAIR | fluid attenuated inversion recovery |
| Inv, inv | inversion; involuntary |
| STIR | Inversion Time Inversion Recovery |
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| STIR | Short-inversion time inversion-recovery |
| AIVR | Accelerated Idioventricular rhythm |
| BER | Basic Electrical Rhythm |
| NSR | Normal Sinus Rhythm |
| nyctohemeral | Both daily and nightly. Synonym: nycterohemeral. Origin: nycto-+ G. Haemra, day (05 Mar 2000) |
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| paracentric inversion | A basic type of chromosome rearrangement. A segment that does not include the centromere (and so is paracentric) has been snipped out of a chromosome, turned through 180 degrees (inverted), and inserted right back into its original location in chromosome. (12 Dec 1998) |
| visceral inversion | A transposition of the viscera, e.g., the liver developing on the left side or the heart on the right. Synonym: visceral inversion. (05 Mar 2000) |
| pericentric inversion | <cell biology, genetics> Chromosomal inversion in which the region that is inverted includes the kinetochore. (18 Nov 1997) |
| short TI inversion recovery | An inversion recovery sequence that uses a short inversion time, about 100 ms., between 180 |
| inversion | 1. The act of inverting, or turning over or backward, or the state of being inverted. 2. <mathematics> A change in the order of the terms of a proportion, so that the second takes the place of the first, and the fourth of the third. 3. <genetics> An aberration in which a chromosomal segment is deleted and reinserted in the same place but turned 180 degrees from its original orientation, so that the gene sequence for the segment is reversed with respect to that of the rest of the chromosome. 4. <geometry> A peculiar method of transformation, in which a figure is replaced by its inverse figure. Propositions that are true for the original figure thus furnish new propositions that are true in the inverse figure. See Inverse figures, under Inverse. 5. Said of intervals, when the lower tone is placed an octave higher, so that fifths become fourths, thirds sixths, etc. Said of a chord, when one of its notes, other than its root, is made the bass. 6. <geology> The folding back of strata upon themselves, as by upheaval, in such a manner that the order of succession appears to be reversed. 7. <chemistry> The act or process by which cane sugar (sucrose), under the action of heat and acids or ferments (as diastase), is broken or split up into grape sugar (dextrose), and fruit sugar (levulose); also, less properly, the process by which starch is converted into grape sugar (dextrose). The terms invert and inversion, in this sense, owe their meaning to the fact that the plane of polarization of light, which is rotated to the right by cane sugar, is turned toward the left by levulose. See: invert. Origin: L. Inversio: cf. F. Inversion. Source: Websters Dictionary (04 Jul 1999) |
| inversion heterozygote | <genetics> Individual in which one chromosome contains an inversion whereas the homologous chromosome does not. (18 Nov 1997) |
| inversion of chromosomes | A chromosome aberration resulting from a double break in a segment of the chromosome, with end for end rotation of the fragment between the fracture lines, and refusion of the fragments; this results in reversal of the order of genes in that segment. (05 Mar 2000) |
| inversion of the uterus | A turning of the uterus inside out, usually following childbirth. (05 Mar 2000) |
| inversion recovery | A magnetic resonance pulse sequence in which a series of 180 |
| uterine inversion | A turning of the uterus inside out, whereby the fundus is forced through the cervix and protrudes into or outside of the vagina. (12 Dec 1998) |
| accelerated idioventricular rhythm | A transient and intermittent type of arrhythmia with episodes lasting from a few seconds to a minute which usually occurs in patients with acute myocardial infarction or with digitalis toxicity. Suppressive therapy is rarely necessary because the ventricular rate is generally less than 100 beats per minute. (12 Dec 1998) |
| agonal rhythm | An idioventricular rhythm, characterised by unusually wide and bizarre ventricular complexes, often seen in moribund patients. (05 Mar 2000) |
| alpha rhythm | Brain waves in the encephalogram which have a frequency of 8 to 13 per second. They are typical of the normal person awake and in a quiet resting state, and occur principally in the occipital region. (12 Dec 1998) |
| atrioventricular junctional rhythm | The cardiac rhythm when the heart is controlled by the A-V junction (including node); arising in the A-V junction, the impulse ascends to the atria and descends to the ventricles, each at varying speeds depending on site of the pacemaker. Synonym: A-V junctional rhythm, nodal bradycardia, nodal rhythm. (05 Mar 2000) |
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