lungs and respiratory Flashcards
oxygenation
the process that facilitates and impair oxygen: breathing, blood flow (hemoglobin)
why is adequate perfusion necessary
deliver oxygenated blood to tissues
remove metabolic waste
what is needed to support brain
adequate oxygenation
what does the respiratory system do
supply oxygen to cells
removes carbon dioxide using ventilation
ventilation
process of moving gases in and out of the lungs by inspiration and expiration
lower airway consists of
trachea
right and left main stem bronchi
pleural cavities
contain lungs
lined with two types of serous membranes:
- parietal pleura
- visceral pleura
what are chest wall and diaphragm protected by
parietal, pleura lines the inside of the rib cage and the diaphragm while the inner, visceral or pulmonary, layer covers the lungs.
what does the nurse describe when assessing respiratory system?
- lung sounds
- effort of pt. to breathe
- appearance of the chest wall
- status of the airways
what vital signs will nurse assess
- oxygen saturation
- respiratory rate
- rate, depth, rhythm
where is cyanosis noted?
lips
gums
nailbeds
range of normal oxygen stat
95% to 100%
range of oxygen stat in chronic lung disease
might tolerate a level as low as 85%
expected range of respiratory rate
12 to 20
rate
number of full inspirations and expirations in 1 min
depth
amount of chest wall expansions that occur with each breath
- abnormal are deep and shallow
rhythm
observation of breathing intervals
bradypnea
regular breathing pattern with a rate less than 12/min
tachypnea
regular breathing pattern with a rate greater than 20/min
hyperventilation
deep breathing pattern with an increased rate