Respiratory terms Flashcards
Apnea
cessation or absence of breathing movements in resting expiratory position
eupnea
normal comfortable breathing at rest
hyperventalation
increased alveolar ventalation in relation to metabolic rate
hypopnea
decreased breathing frequency and or tidal volume compared to breathing at rest
hypoventilation
decreased alveolar ventilation in relation to metabolic rate
hypoxia
low or reduced O2 tension particularly of tissues
hypoxemia
blood hypoxia
partial pressure
pressure exerted by any one component gas in a gas mixture
Torr
interchangeable with mm Hg
PAO2
partial pressure O2 in alveoli of lung
PACO2
partial pressure CO2 in alveoli of lung
PaO2
partial pressure oxygen in arterial blood
PaCo2
partial pressure CO2 in arterial blood
Vt
tidal volume
f
respiratory frequency
Ve
respiratory minute volume
tidal volume
volume of gas inspired or expired during each respiratory cycle
inspiratory reserve volume
max volume of gas that can be inspired form end-tidal inspiratory position
expiratory reserve volume
max volume gas that can be expired from resting-end expiratory level
residual volume
volume of gas remaining in lungs at end maximal expiration
total lung capacity
amount of gas contained in lung at end of max inspiration
vital capacity
max volume of gas that can be expelled from lungs by forceful effort following max inspiration
inspiratory capacity
max volume of gas that can be inspired from resting expiratory level
functional residual capacity
volume of gas remaining in lungs at resting expiratory level
