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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 ?
(Answer: 498.) Holding down the Shift key, highlight one of the chains and observe its location.
Add to the selection by using the Shift key or setting the options bar to Add to Selection.
His video shows that the click sound produced by the caps lock key is strangely louder compared to the shift key.
Select one of the corners, and while holding the Shift key, click and drag one of the corners until it looks appropriate in size.
Click on the tab of the first worksheet, and while holding down the Shift key, click on the tab of the last sheet in the group.
Either hold the Shift key when deleting, or empty the Deleted Items folder afterwards.
Furthermore, the phone comes equipped with a physical portrait-style keyboard that offers a fourth row accommodating the space bar and shift key for easy typing.
Then select all the graphics you want frozen by holding down the Shift key while clicking on each image.
To tell Windows which program to use instead, find an image file, hold the Shift key and right-click it, and choose Open With from the pop-up menu.
You may want to bypass the automatic opening of the Main form and instead access the Database window simply by holding down the Shift key and double-clicking the file in Windows Explorer, which you can launch from your desktop toolbar.
Hold the Shift key and right-click on an icon, then select Open With.
For Windows users, while in iTunes > hold down the shift key and left click on Check for an update > update.