Volume of air displaced between normal inhalation and exhalation
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TLC
Total lung capacity: the volume in the lungs at maximal inflation, the sum of VC and RV.
TV
Tidal volume: that volume of air moved into or out of the lungs in 1 breath (TV indicates a subdivision of the lung; when tidal volume is precisely measured, as in gas exchange calculation, the symbol TV or VT is used.)
RV
Residual volume: the volume of air remaining in the lungs after a maximal exhalation
ERV
Expiratory reserve volume: the maximal volume of air that can be exhaled from the end-expiratory position
IRV
Inspiratory reserve volume: the maximal volume that can be inhaled from the end-inspiratory level
IC
Inspiratory capacity: the sum of IRV and TV
IVC
Inspiratory vital capacity: the maximum volume of air inhaled from the point of maximum expiration
VC
Vital capacity: the volume of air breathed out after the deepest inhalation.
VT
Tidal volume: that volume of air moved into or out of the lungs during quiet breathing (VT indicates a subdivision of the lung; when tidal volume is precisely measured, as in gas exchange calculation, the symbol TV or VT is used.)
FRC
Functional residual capacity: the volume in the lungs at the end-expiratory position
RV/TLC%
Residual volume expressed as percent of TLC
VA
Alveolar gas volume
VL
Actual volume of the lung including the volume of the conducting airway.
FVC
Forced vital capacity: the determination of the vital capacity from a maximally forced expiratory effort
FEVt
Forced expiratory volume (time): a generic term indicating the volume of air exhaled under forced conditions in the first t seconds
FEV1
Volume that has been exhaled at the end of the first second of forced expiration
FEFx
Forced expiratory flow related to some portion of the FVC curve; modifiers refer to amount of FVC already exhaled
FEFmax
The maximum instantaneous flow achieved during a FVC maneuver
FIF
Forced inspiratory flow: (Specific measurement of the forced inspiratory curve is denoted by nomenclature analogous to that for the forced expiratory curve. For example, maximum inspiratory flow is denoted FIFmax. Unless otherwise specified, volume qualifiers indicate the volume inspired from RV at the point of measurement.)
PEF
Peak expiratory flow: The highest forced expiratory flow measured with a peak flow meter
MVV
Maximal voluntary ventilation: volume of air expired in a specified period during repetitive maximal effort
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Tidal volume (symbol VT or TV) is the volume of air moved into or out of the lungs in one breath.[1] In a healthy, young human adult, tidal volume is approximately 500 ml per inspiration at rest or 7 ml/kg of body mass.[2]
Tidalvolume (symbol VT or TV) is the volume of air moved into or out of the lungs in one breath. In a healthy, young human adult, tidalvolume is approximately...
human male is about 6 litres of air. Tidal breathing is normal, resting breathing; the tidalvolume is the volume of air that is inhaled or exhaled in...
second. Tidalvolume is the amount of air inhaled or exhaled normally at rest.[medical citation needed] Total lung capacity (TLC) is the maximum volume of...
such as mechanical ventilators. If both tidalvolume (VT) and respiratory rate (ƒ or RR) are known, minute volume can be calculated by multiplying the two...
The lung volumes are tidalvolume (VT), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV). The four lung capacities...
flow inflation, work is defined as inspiratory pressure multiplied by tidalvolume. Therefore, an assisted breath is identified as a breath for which airway...
respectively, and VD/VT is the ratio of physiologic dead space over tidalvolume. R = P E CO 2 ( 1 − F I O 2 ) P i O 2 − P E O 2 − ( P E CO 2 ∗ F i O...
units. The RSBI is defined as the ratio of respiratory frequency to tidalvolume (f/VT). People on a ventilator who cannot tolerate independent breathing...
out of the lungs. The volume of air moved in or out of the lungs under normal resting circumstances (the resting tidalvolume of about 500 ml), and volumes...
the inverse of the dead space fraction (i.e. the ratio of tidalvolume to dead space volume). τ {\displaystyle \tau } represents the pulmonary time constant...
achieve a user-selected desired tidalvolume. They are known by various vendor-specific terms such as pressure-regulated volume control (Siemens), autoflow...
The tidal force or tide-generating force is a gravitational effect that stretches a body along the line towards and away from the center of mass of another...
while the other rescuer squeezes the bag and focuses on breath (or tidalvolume) and timing. An endotracheal tube (ET) can be inserted by an advanced...
Hyperventilation is irregular breathing that occurs when the rate or tidalvolume of breathing eliminates more carbon dioxide than the body can produce...
Low tidalvolume ventilation was the primary independent variable associated with reduced mortality in the NIH-sponsored ARDSNet trial of tidalvolume in...
A tidal barrage is a dam-like structure used to capture the energy from masses of water moving in and out of a bay or river due to tidal forces. Instead...
approximately half a liter of air during each respiratory cycle, which is called tidalvolume. The respiratory rate is directly affected by the concentration of carbon...
the tidalvolume Vt. The %RCi contribution to TidalVolume ratio is obtained by dividing the inspired volume in the RC band by the inspired volume in the...
rate, tidalvolume, trigger sensitivity, flow rate, waveform, and inspiratory/expiratory ratio. The volume-cycled ventilation includes the volume-control...
patterns and the extra-inspired tidalvolume is an artificial construct associated with one of these patterns. Thus it is the volume change that actually causes...
space in a person's lungs. This is given as a ratio of dead space to tidalvolume. It differs from anatomical dead space as measured by Fowler's method...
currently regulated by Volume Control or Pressure Control. In pressure controlled breaths a tidalvolume achieved is based on how much volume can be delivered...
inhalation. It is equal to the sum of inspiratory reserve volume, tidalvolume, and expiratory reserve volume. It is approximately equal to Forced Vital Capacity...
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