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a change or deviation.
antigenic shift a sudden, major change in the antigenicity of a virus, seen especially in influenza viruses, resulting from the recombination of the genomes of two different strains; it is associated with pandemics because hosts do not have immunity to the new strain. See also antigenic drift.
chloride shift the exchange of chloride and carbonate between the plasma and the erythrocytes that takes place when the blood gives up oxygen and receives carbon dioxide. It serves to maintain ionic equilibrium between the cell and surrounding fluid.
mediastinal shift a shifting to one side of the tissues and organs of the mediastinum; see also mediastinal shift.
shift to the left
1. a change in the blood picture, with a preponderance of young neutrophils.
2. an increased oxygen affinity of hemoglobin.
shift to the right
1. a preponderance of older neutrophils in the blood picture.
2. a decreased oxygen affinity of hemoglobin.
weight shift
1. the frequent movement of a paralyzed or partially paralyzed patient to redistribute the patient's weight and prevent impairment of circulation, which leads to pressure sores. One variation is the wheelchair pressure release.
2. relocation of a patient's center of mass in order to allow movement; see also gait.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


An alteration; in pathology, structural alteration of which the cause and significance is uncertain.
Synonym(s): shift
Farlex Partner Medical Dictionary © Farlex 2012


Vox populi
The change in a thing.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


1. Synonym(s): change.
2. A period of 8-12 hours during which an employee is assigned to work on a given day. Division of each 24 hours into day, evening, and night shifts is intended to maximize efficiency.
See also: deviation
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about shift

Q. I started a new job a month ago – it’s night shifts as a security guard in a large office building I don’t know why, but I started feeling very down in the last week. Can it be that the change in waking hours is effecting me?

A. there are dozens of studies about night shift workers that try to connect them to all sort of things. and there is a good reason- our hormonal balance is maintained by our Hypothalamus (an area in the brain). being awake on night time changes it's function, it changes our hormonal system balance and other things around our brain. this can easily cause things like depression amongst some people.

More discussions about shift
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References in periodicals archive ?
The symptoms "dizziness," "feel as if walking on shifting ground," "feel spacey" or "spaced out," "surrounding seems strange and unreal," and "body feels strange/different in some way" were reported consistently more often in vestibular patients (with and without anxiety) than in healthy subjects.
Two essays in On Shifting Ground provide provocative although inconclusive evidence of the choices Muslim women are making about their bodies' symbolism.
Bonnie Costello's Shifting Ground: Reinventing Landscape in Modern American Poetry seeks to speak to both groups.
In addition to the wounds of the flesh, the body is transient, and thus marking it as a kind of transcendent signified (as do Gaines and Morrison) reinscribes the shifting ground of the signification process.
Shifting ground from its holding in Lincoln Savings, the Supreme Court in INDOPCO stated that Lincoln Savings' separate-and-distinct asset test was not the exclusive test for capitalization.
He was aware of this shifting ground as he spoke to a national convention of censors, held in Saint John, New Brunswick, in 1960: "The rigid inflexibility, the inability to adapt to the changing outlook of the Canadian people, the conflicting decisions and inconsistencies have succeeded in making censorship look ridiculous in the eyes of the people we seek to serve."
The reason for the snub is the shifting ground in the boot market, with manufacturers now ploughing most of their resources into one or two big names.
This shifting ground of signification, therefore, cannot be reduced to frozen categories of culture such as race, gender, class or nation.
Interval, run by Allen's friend David Lidell, originally a research scientist at PARC, was set up seven years ago as a pure research organization, but is now shifting ground to work on projects more closely related to the cable industry and interactive multimedia, claims the article.
He suggests that since "the country-house poem occupies the uneasy, shifting ground between a popular, residual, and communal ideology and a more egalitarian, emerging bourgeois ideology, so too does it place itself between two dominant literary forms: Renaissance drama and the bourgeois form of the novel" (12).
Recent years have witnessed an ever-increasing profusion of texts, readers, guides, and cribs designed to provide the reader with some kind of sketch-map for this contested and shifting ground, and Michael Payne's encyclopaedic text would seem at first glance to be following in the footsteps of his predecessors.
The shifting ground of feminist poetic theory in the last decade is nowhere better indicated than by the contribution "'Corpses of Poesy': Some Modern Poets and Some Gender Ideologies of Lyric," by Rachel Blau DuPlessis.