QuestionSBA
QuestionChoice
This is showing a restrictive spirometry pattern (FEV1<80%, FVC <80% and FEV1/FVC normal) and type 2 respiratory failure (hypoxaemia and hypercapnia). A COPD patient is more likely to have an obstructive respiratory pattern.
10006604
d
FEV1 = 31%, FVC = 26%, FEV1/FVC = 115%, PaO2 = 6kPa, PaCO2 = 7kPa
QuestionChoice
This is showing a normal spirometry pattern with no respiratory failure.
10006605
e
FEV1 = 85% , FVC = 90%, FEV1/FVC = 94%, PaO2 = 12kPa, PaCO2 = 5kPa
QuestionChoice
This is showing an obstructive spirometry pattern (FEV1<80%, FVC normal and FEV1/FVC<70%) and type 2 respiratory failure (hypoxaemia and hypercapnia), which is most typical for COPD.
10006601
a
FEV1 = 58.5%, FVC = 91.1%, FEV1/FVC = 68.8%, PaO2 = 6kPa, PaCO2 = 7kPa
QuestionChoice
This is showing a restrictive spirometry pattern (FEV1<80%, FVC <80% and FEV1/FVC normal) and type 1 respiratory failure (only hypoxaemia). A COPD patient is more likely to have an obstructive spirometry pattern and type 2 respiratory failure.
10006603
c
FEV1 = 31%, FVC = 26%, FEV1/FVC = 115%, PaO2 = 6kPa, PaCO2 = 5kPa
QuestionChoice
This is showing an obstructive spirometry pattern (FEV1<80%, FVC normal and FEV1/FVC<70%) and type 1 respiratory failure pattern (only hypoxaemia). A COPD patient is more likely to have type 2 respiratory failure.
10006602
b
FEV1 = 58.5%, FVC = 91.1%, FEV1/FVC = 68.8%, PaO2 = 6kPa, PaCO2 = 5kPa
Concept
Chapter
2693
4523
Chronic obstructive pulmonary disease
Topic
150
Respiratory physiology
13867
A 65-year-old man with poorly controlled COPD is brought into hospital. An arterial blood gas (ABG) is carried out showing type II respiratory failure.

Normal values for PaO2 and PaCo2 are shown below:

- PaO2 = 10-14kPa
- PaCO2 = 4-6kPa

What would his spirometry and ABG results most likely show?
a