| DV | dependent variable; diagnostic variable; difference in volume; digital vibration; dilute volume; dis... |
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| vs | see above [Lat. vide supra]; single vibration; versus; vibration seconds; vital signs |
| FEF50 | forced expiratory flow at 50% of forced vital capacity |
| FIF50 | forced inspiratory flow at 50% of forced vital capacity |
| IVT | index of vertical transmission; interventional video tomography; intrasound vibration test; intraven... |
| FEV1/ FVC | forced expiratory volume in one second/forced vital capacity |
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| HAVS | Hand-Arm Vibration Syndrome |
| VPT | Vibration Perception Threshold |
| VWF | Vibration white finger |
| WBV | Whole-body vibration |
| vibration | 1. The act of vibrating, or the state of being vibrated, or in vibratory motion; quick motion to and fro; oscillation, as of a pendulum or musical string. "As a harper lays his open palm Upon his harp, to deaden its vibrations." (Longfellow) 2. <physics> A limited reciprocating motion of a particle of an elastic body or medium in alternately opposite directions from its position of equilibrium, when that equilibrium has been disturbed, as when a stretched cord or other body produces musical notes, or particles of air transmit sounds to the ear. The path of the particle may be in a straight line, in a circular arc, or in any curve whatever. Vibration and oscillation are both used, in mechanics, of the swinging, or rising and falling, motion of a suspended or balanced body; the latter term more appropriately, as signifying such motion produced by gravity, and of any degree of slowness, while the former applies especially to the quick, short motion to and fro which results from elasticity, or the action of molecular forces among the particles of a body when disturbed from their position of rest, as in a spring. Amplitude of vibration, the maximum displacement of a vibrating particle or body from its position of rest. Phase of vibration, any part of the path described by a particle or body in making a complete vibration, in distinction from other parts, as while moving from one extreme to the other, or on one side of the line of rest, in distinction from the opposite. Two particles are said to be in the same phase when they are moving in the same direction and with the same velocity, or in corresponding parts of their paths. Origin: L. Vibratio: cf. F. Vibration. Source: Websters Dictionary (01 Mar 1998) |
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| vibration syndrome | <syndrome> Tingling, numbness, and blanching of the fingers resulting from use of hand-held vibration tools; may persist without further exposure to vibration. (05 Mar 2000) |
| vibration tolerance | The maximum vibratory or oscillatory movements that an individual can experience and bear without pain; the limit of tolerance is a function of amplitude and frequency of the vibration and varies with the direction of application. (05 Mar 2000) |
| forced | Done or produced with force or great labour, or by extraordinary exertion; hurried; strained; produced by unnatural effort or pressure; as, a forced style; a forced laugh. Forced draught. See Draught. Forced march, a march of one or more days made with all possible speed. Source: Websters Dictionary (01 Mar 1998) |
| forced alimentation | Giving liquid food through a nasal tube passed into the stomach, forcing a person to eat more food than desired. Synonym: forced alimentation. (05 Mar 2000) |
| forced beat | <cardiology, physiology> An extrasystole supposedly precipitated in some way by the preceding normal beat to which it is coupled, an extrasystole caused by artificial stimulation of the heart. Synonym: dependent beat. (05 Mar 2000) |
| forced cycle | <cardiology, physiology> A cardiac cycle (atrial or ventricular) that is cut short by a forced beat. (05 Mar 2000) |
| forced duction | A manoeuver to determine whether a mechanical obstruction is present in the eye; with forceps grasping an eye muscle, an attempt is made to passively move the eyeball in the direction of restricted rotation. Synonym: passive duction. (05 Mar 2000) |
| forced expiratory flow | Expiratory flow during measurement of forced vital capacity; subscripts specify the exact parameter measured, e.g., peak instantaneous flow, the instantaneous flow at some specified point on the curve of volume expired versus time, or on the flow-volume curve, the mean flow between two expired volumes. (05 Mar 2000) |
| forced expiratory flow rates | Measurements of rates of airflow during a forced vital capacity determination. (12 Dec 1998) |
| forced expiratory time | The time taken to expire a given volume or a given fraction of vital capacity during measurement of forced vital capacity; subscripts specify the exact parameters measured. (05 Mar 2000) |
| forced expiratory volume | Measure of the maximum amount of air during a forced vital capacity determination that can be expelled in a given number of seconds. It is usually given as fev followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity. (12 Dec 1998) |
| forced feeding | Giving liquid food through a nasal tube passed into the stomach, forcing a person to eat more food than desired. Synonym: forced alimentation. (05 Mar 2000) |
| forced grasping reflex | An involuntary flexion of the fingers to tactile or tendon stimulation on the palm of the hand, producing an uncontrollable grasp; usually associated with frontal lobe lesions. Compare: darwinian reflex. Synonym: forced grasping reflex, grasp reflex. (05 Mar 2000) |
| forced respiration | Voluntary hyperventilation. (05 Mar 2000) |
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