NURC 424- Acute Respiratory Failure
Study Set Exam
ARF - Answer Secondary disorder that can occur as a result of one or more diseases
involving lungs or other body systems
Type I: Hypoxemic Normocapnia - Answer (Oxygenation Failure)
PaO2 < 60
Hg on 60%
PaCO2 35-45
Type II: Hypoxemic Hypercapnia - Answer (Ventilatory Failure)
PaO2 <60
Hg 60%
PaCO2 > 50 and pH <7.35
Hypoxemic Acute Respiratory Failure Physiologic mechanisms - Answer V/Q mismatch
Alveolar hypoventilation
Diffusion limitation
Shunting/Intrapulmonary shunt
V/Q Mismatch - Answer Occurs when ventilation exceeds perfusion or vice versa.
Common causes:
Increased respiratory secretions
Alveolar collapse
Lung collapse
Pulmonary embolus
Alveolar hypoventilation - Answer Generalized decrease in ventilation that results in
increased CO2 and decrease in O2.
Causes:
Restrictive lung disease
CNS disease
Study Set Exam
ARF - Answer Secondary disorder that can occur as a result of one or more diseases
involving lungs or other body systems
Type I: Hypoxemic Normocapnia - Answer (Oxygenation Failure)
PaO2 < 60
Hg on 60%
PaCO2 35-45
Type II: Hypoxemic Hypercapnia - Answer (Ventilatory Failure)
PaO2 <60
Hg 60%
PaCO2 > 50 and pH <7.35
Hypoxemic Acute Respiratory Failure Physiologic mechanisms - Answer V/Q mismatch
Alveolar hypoventilation
Diffusion limitation
Shunting/Intrapulmonary shunt
V/Q Mismatch - Answer Occurs when ventilation exceeds perfusion or vice versa.
Common causes:
Increased respiratory secretions
Alveolar collapse
Lung collapse
Pulmonary embolus
Alveolar hypoventilation - Answer Generalized decrease in ventilation that results in
increased CO2 and decrease in O2.
Causes:
Restrictive lung disease
CNS disease
