Flashcards in Surgical Respiratory Care, C24 P158-160 Deck (12):
What is the most common cause of fever in the first
48 hours postop?
What is absorption atelectasis?
Elevated inhaled oxygen replaces the nitrogen in the alveoli resulting in collapse of the air sac (atelectasis); nitrogen keeps alveoli open by “stenting” them
What is incentive spirometry?
Patient can document tidal volume and will have an “incentive” to increase it
What is oxygen-induced hypoventilation?
Some patients with COPD have low oxygen as the main stimulus for the respiratory drive; if given supplemental
oxygen, they will have a decreased respiratory drive and hypoventilation
Why give supplemental oxygen to a patient with a
Pneumothorax is almost completely nitrogen—thus increasing the oxygen in the alveoli increases the nitrogen gradient and results in faster absorption of the pneumothorax!
What is a nonrebreather mask?
100% oxygen with a reservoir bag
Why do nonrebreather masks have a “reservoir” bag?
Inhalation flow will exceed the delivery rate of the tubing and the bag allows for extra oxygen stores
What is the maximum oxygen FiO2 delivered by a
≈80% to 90%
How do you figure out the PaO(2) from an O(2) sat?
PaO(2) of 40, 50, 60 roughly equals 70, 80, 90 in sats
What is an oxygen nasal cannula?
Oxygen delivered via tubing with prongs into nares
How much do you increase the FiO(2) by each liter added
to the nasal cannula?