Oxygenation Flashcards
Ventilation
Movement of gas in and out of the lungs
Diffusion
Oxygen and CO2 exchange between alveoli and RBCs
Perfusion
Distribution of oxygenated RBCs to the tissue in the body
Hypercarbia
When CO2 increases in the bloodstream
Lung volumes
Age, gender, height
Tidal volume
Amount of air exhaled following normal inspiration
Alveoli function
Promote gas exchange
Bronchial
High pitch, normally heard of trachea
Brochialvesicular
Medium pitch, heard over mainstream bronchi
Vesicular
Low pitch, heard over most of normal lung
Crackles/rales
Fine to coarse bubbly sounds, associated with air passing through fluid or collapsed small airways
Wheezes
High pitched whistling, narrow obstructed airway
Rhonchi
Low pitched rumbling, fluid to mucus in airways, can resolve with coughing
Stridor
Choking, children
Bradypnea
Rate of breathing is regular by abnormal slow
Tachypnea
Rate of breathing is regular but abnormally rapid
Hyperpnea
Respirations are labored, increased in depth, and increased in rate
Apnea
Respirations cease for several seconds. Persistent cessation results in respiratory arrest
Hyperventilation
Rate and depth or respirations increase, hypercarbia sometimes occurs
Hypoventilation
Respiratory rate is abnormally low, and depth of ventilation is depressed, hypercarbia sometimes occurs
Work of breathing
Efforts to explain and contract our lungs
Hypovolemia
Decreased volume of circulating blood in the body
Atelectasis
Collapsed alveoli
Hypoxia
Inadequate tissue oxygenation