Respiratory Abbreviations Flashcards
Define C
Compliance:
measure of the lung’s ability to stretch and expand
Define D
Diffusion Capacity:
How well a gas in the inspired air can cross into the blood
Define F
Fractional concentration of gas:
Fraction of that gas within a given volume
Define P
Pressure
Define Q
Volume (blood)
Define S
Saturation (blood)
Define t
Time
Define T
Temperature
Define V
Volume (gas)
Define PA
Alveolar Pressure:
pressure of air inside the lung alveoli
Define Pa
Arterial Pressure:
Blood pressure on arteries during heart contraction
Define FiO2
Fraction of inspired O2:
is the fraction of oxygen in the volume being measured
Define Ppl
Pleural Pressure:
Pressure within the pleural cavity
Often slightly less than atmospheric pressure and so is described as a negative pressure
Define PO2
Partial pressure of O2
Define VA
Alveolar gas volume: 350ml
Volume of gas in the alveoli of the lungs
Define Q.
Blood flow (perfusion)
Define V.
Air flow
Define FRC
Functional Residual Capacity: 2.7 - 3L
the volume of air present in the lungs at the end of passive expiration.
Define RV
Residual Volume: 1.2L
amount of air that remains in a person’s lungs after fully exhaling
Define TLC
Total Lung Capacity: 6L
total amount of air in the lungs after taking the deepest breath possible
Define VC
Vital Capacity: 4.8L
the greatest volume of air that can be expelled from the lungs after taking the deepest possible breath.
Define VT
Tidal Volume: 0.5L
The lung volume expired in each breath when extra effort is not applied (quiet breathing)
Define fR
Respiratory Frequency: 12breaths/min
The number of breaths per minute
Define V.E
Total Ventilaltion: L/min
total exchange of air between the lungs and the ambient air
Define V.A
Alveolar ventilation: 4200ml/min
The amount of gas that reaches the alveoli during a breath (must be matched to metabolism)
Define V.D
Dead space ventilation: 1800ml/min
the volume of a breath that does not participate in gas exchange
Define V.O2
O2 consumption: 250ml/min
the amount of oxygen consumed by the tissues of the body, usually measured as the oxygen uptake in the lung
Define V.CO2
CO2 Production: 200ml/min
Amount of CO2 produced by tissues and removed from by the lungs.
Define PAO2/CO2
Alveolar PO2 / PCO2
Define PaO2/CO2
Arterial PO2 / PCO2
Define PvO2/CO2
Venous PO2 / PCO2
Define CaO2
Arterial O2 Content
Define SaO2
Arterial O2 saturation
Define IC
Inspiratory Capacity:
The volume of air that can be inspired following a normal, quiet expiration
Define IRV
Inspiratory Reserve Volume:
The additional amount of air that can be inhaled after a normal inspiration
Define ERV
Expiratory Reserve Volume:
The additional amount of air that can be expired from the lungs by determined effort after normal expiration
Define VE
Minute Ventilation: 6L/min
Volume of air expired each minute
Define VD
Deadspace Volume: 150ml
Volume of air in the respiratory system where no gas exchange is taing place and therefore this is wasted air.
Raw
Total airway resistance: 1.5L/s
Define PIF
Peak Inspiratory Flow:
The fastest flow rate noted during the inspiratory cycle
Define PEF
Peak Expiratory Flow:
person’s maximum speed of expiration, as measured with a peak flow meter
Define FER
Forced Expiratory Ratio: FEV1:FVC
The ratio between the volume of forced air exhaled in the first second of expiration compared to the total capacity of the individual. Used to measure airway resistance
Define FEV1
Forced Expiratory volume in 1 second:
The volume of air exhaled in the first second of forced expriation
Define FVC
Forced Vital Capacity:
Volume of air exhaled during forced expiration
