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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 former premier was shifted to Services Hospital on February 3 and underwent medical tests to ascertain his health condition.
We develop a shifted counterpart of this classical theory.
Miami words can also be progressively shifted:</p> <pre>
It was subsequently shifted onto ambient (service) temperatures of interest.
As many as 99,000 jobs will be shifted from the United States to China and 124,000 jobs will be shifted to Mexico in 2004, compared to approximately 85,000 jobs to each country in 2001.
Having failed with this strategy, Sue shifted to a compensation mode and developed two unsatisfactory options.
The change is only the latest in a series of shifted workloads at MTMC's container freight stations.
* THE IRS RESTRUCTURING AND REFORM ACT OF 1998 shifted the burden of proof to the IRS in civil tax matters.
This is because, if the burden of proof were shifted to the government in tax cases, the IRS's enforcement efforts would have to be intensified as the agency endeavored to sustain its heightened burden.
By law, the more than 22 percent overage must be shifted to the other three property classes: the Class One small homes, the Class Two apartment houses, and the Class Four, primarily commercial property.
After losing billions in the early 90s, IBM has shifted from a command and control vertical integration to a service-based networked integration, shedding employees, and gaining back revenue.