Pulm Acronyms and Pressures Flashcards
TV or Vt
tidal volume: volume of gas inspired and passively expired during normal breathing
RV
residual volume: volume of gas remaining in the lung after maximal exhalation
~1200mL
ERV
expiratory reserve volume: volume of gas that can be maximally exhaled with the lungs and chest at rest
~1100mL
IRV
inspiratory reserve volume: volume of gas that can be maximally inhaled at the inspiratory peak of the tidal volume
~3000mL
TLC (total lung capacity)
IRV + TV+ ERV + RV
VC (vital capacity)
IRV + TV + ERV
IC (inspiratory capacity)
IRV + VT
FRC (functional residual capacity)
ERV + RV
Eupnea
normal or quiet breathing
Dyspnea
shortness of breath or air hunger
Apnea
cessation of breathing
Palv
alveolar pressure
PO2
partial pressure of oxygen
= 100mmHg
PCO2
partial pressure of carbon dioxide
= 40mmHg
Pao2
partial pressure of oxygen in arterial blood
= 95mmHg
Pvo2
partial pressure of oxygen in venous blood
= 40mmHg
Paco2
partial pressure of carbon dioxide in arterial blood
=40mmHg
Pvco2
partial pressure of carbon dioxide in venous blood
=46mmHg
PAo2
partial pressure of oxygen in alveolar gas
=100mmHg
PAco2
partial pressure of carbon dioxide in alveolar gas
=40mmHg
So2
percent saturation of hemoglobin with oxygen
Sao2
percent saturation of hemoglobin with oxygen in arterial blood
Cao2
total concentration of oxygen in arterial blood
Cvo2
total concentration of oxygen in venous blood
VA
volume of alveolar gas
Vo2
rate of oxygen uptake per minute
Vco2
amount of CO2 eliminated per minute
R
respiratory exchange ratio
Q
cardiac output