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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.

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References in periodicals archive ?
Xu, "A 57-to-64-GHz 0.094[mm.sup.2] 5-bit passive phase shifter in 65-nm CMOS," IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol.
Yuce, "High Input impedance NMOS-based phase shifter with minimum number of passive elements", Circuits, Syst.
The shifter sleeve chamfers now contact the gear engagement teeth, giving rise to a second peak called double bump or second bump.
In an MSVD system, level shifters (LSs) are required on the boundaries between the circuit subsections operating at different power supply voltages to up-convert signals from the VDDL to the VDDH voltage level.
The famous Mr Shifter ad, which featured Choppers, above right, who at 46 is the last ?
An M bits SDL time shifter provides [2.sup.M]-1 delays, namely 0, [[tau].sub.e], 2[[tau].sub.e], ..., ([2.sup.M]-1)[[tau].sub.e], multiples of an elementary one, say [[tau].sub.e], giving a maximum achievable time delay [[tau].sub.max] = ([2.sup.M]-1)[[tau].sub.e].
Michael Shifter, president of the Washington-based think tank Inter-American Dialogue, said that, although the Summit of the Americas process "has lost a lot of its luster" in recent years, it continues to have value, particularly as a point of engagement between the US and its neighbors to the south.
The phase shifter is able to work at lower coupling coefficients.
This report constitutes a new proof-of-concept approach to magnetically tunable YIG phase shifter for use in the U- and W-band.