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Gas Exchange Terms, Revised

Across
Reduces surface tension of alveoli
The tendency of molecules to move from an area of high concentration to one of lower concentration
Expectoration of blood
Refers to any impediment to airflow
Work of breathing
RR < 12 per min for adult
Fluid accumulation in the pleural cavity (between lung and chest wall)
Dyspnea on exertion
Under inflated alveoli
RR > 20 per min for adult
Purulent drainage in the pleural cavity
Deep, rapid, gasping type of respirations
Temporary, insufficient blood supply to a particular area
Down
Change in curvature of nails, common with chronic lung disease
Difficulty breathing/ shortness of breath (SOB)
Contraction of accessory muscles seen in labored breathing
Refers to ease of expansion of the lungs
RR < 12 per min for adult
Periods of apnea alternating with deep and rapid breathing
AP diameter ratio of chest becomes equal over time due to resp. pathology
High-pitched sound, usually on inspiration; indicates blockage around larynx
Difficulty breathing unless sitting or standing
Insufficient oxygenation of blood
Cessation of breathing for >20 seconds
Blue/gray/purple color to skin/mucous membranes due to deficient oxygenation
Insufficient oxygenation of tissues