EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
PEEP & CPAP (exam 1) STUDY GUIDE
LATEST UPDATE
PEEP - Answer✔✔-recruits a certain number of collapsed alveoli
increases FRC & increases compliance in the dependent are (lower lobe) of lung
*compliance decreases in the non-dependent (upper lobe) area of the lung due to overdistention
Indications of PEEP - Answer✔✔-Refractory Hypoxemia (will not respond to supplemental O2)
Shunt of >30%
Atelectasis with decreased FRC
decreased compliance
Certain disease processes
Goals of PEEP - Answer✔✔-enhance tissue oxygenation
maintain PaO2 >60 & SpO2 at or >90% @ acceptable pH
Recruit alveoli & maintain
Restore FRC
Initiating PEEP - Answer✔✔-FIO2 >.50
PIP >35 cwp
is PaO2 still <60: then start to increase PEEP by 3-5 until:
Page 1/6
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
1. acceptable oxygenation achieved
2. unacceptable side effects occur:
decreased compliance
decreased cardiac function
barotrauma
Levels of PEEP - Answer✔✔-Minimum "physiologic" 3-5
moderate 5-15
maximum >15
Optimal - PEEP level which achieves maximum benefits with least side effects
Physiologic Effects of PEEP on: - Answer✔✔-PaO2 - up
FRC - up
PaCO2 - down
BP - down
PvO2 - improves
Intrapulmonary shunt - down
Cardiac output - down
Ca-v O2 - down
ICP - up
Page 2/6
FIRST PUBLISH SEPTEMBER 2024
PEEP & CPAP (exam 1) STUDY GUIDE
LATEST UPDATE
PEEP - Answer✔✔-recruits a certain number of collapsed alveoli
increases FRC & increases compliance in the dependent are (lower lobe) of lung
*compliance decreases in the non-dependent (upper lobe) area of the lung due to overdistention
Indications of PEEP - Answer✔✔-Refractory Hypoxemia (will not respond to supplemental O2)
Shunt of >30%
Atelectasis with decreased FRC
decreased compliance
Certain disease processes
Goals of PEEP - Answer✔✔-enhance tissue oxygenation
maintain PaO2 >60 & SpO2 at or >90% @ acceptable pH
Recruit alveoli & maintain
Restore FRC
Initiating PEEP - Answer✔✔-FIO2 >.50
PIP >35 cwp
is PaO2 still <60: then start to increase PEEP by 3-5 until:
Page 1/6
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
1. acceptable oxygenation achieved
2. unacceptable side effects occur:
decreased compliance
decreased cardiac function
barotrauma
Levels of PEEP - Answer✔✔-Minimum "physiologic" 3-5
moderate 5-15
maximum >15
Optimal - PEEP level which achieves maximum benefits with least side effects
Physiologic Effects of PEEP on: - Answer✔✔-PaO2 - up
FRC - up
PaCO2 - down
BP - down
PvO2 - improves
Intrapulmonary shunt - down
Cardiac output - down
Ca-v O2 - down
ICP - up
Page 2/6
