Surgical Respiratory Care, C24 P158-160 Flashcards Preview

Section I, Surgical Recall Sixth Edition > Surgical Respiratory Care, C24 P158-160 > Flashcards

Flashcards in Surgical Respiratory Care, C24 P158-160 Deck (12):
1

What is the most common cause of fever in the first
48 hours postop?
P158

Atelectasis

2

What is absorption atelectasis?
P158

Elevated inhaled oxygen replaces the nitrogen in the alveoli resulting in collapse of the air sac (atelectasis); nitrogen keeps alveoli open by “stenting” them

3

What is incentive spirometry?
P158 (picture

Patient can document tidal volume and will have an “incentive” to increase it

4

What is oxygen-induced hypoventilation?
P159

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

5

Why give supplemental oxygen to a patient with a
pneumothorax?
P159

Pneumothorax is almost completely nitrogen—thus increasing the oxygen in the alveoli increases the nitrogen gradient and results in faster absorption of the pneumothorax!

6

What is a nonrebreather mask?
P159 (picture)

100% oxygen with a reservoir bag

7

Why do nonrebreather masks have a “reservoir” bag?
P159

Inhalation flow will exceed the delivery rate of the tubing and the bag allows for extra oxygen stores

8

What is the maximum oxygen FiO2 delivered by a
nonrebreather mask?
P159

≈80% to 90%

9

How do you figure out the PaO(2) from an O(2) sat?
P159

PaO(2) of 40, 50, 60 roughly equals 70, 80, 90 in sats

10

What is an oxygen nasal cannula?
P160 (picture)

Oxygen delivered via tubing with prongs into nares

11

How much do you increase the FiO(2) by each liter added
to the nasal cannula?

≈3%

12

What is the max effective flow for a nasal cannula?

6 liters