Chronic Ventilatory Failure

Question 1

In those w Chronic Ventilatory Failure, what happens to their partial pressure of oxygen?

Answer 1

It decreases
<8kPA

Question 2

In those w Chronic Ventilatory Failure, what happens to their partial pressure of carbon dioxide?

Answer 2

Increases
>60kPA

Question 3

What is the pH like in those w chronic ventilatory failkure?

Answer 3

Normal

Question 4

What happens to the levels of bicarbonate in those w chronic ventilatory failure?

Answer 4

Increases

Question 5

What is the difference between type one and two ventilatory failure?

Answer 5

Type 1- normal/low pCO2 and low pO2
Type 2- elevated pC02, low pO2

Question 6

Name two airways diseases that can cause chronic ventilatory failure.

Answer 6

COPD
bronchiectasis

Question 7

Name one chest wall abnormality that can cause chronic ventilatory failure.

Answer 7

Kyphoscoliosis

Question 8

Name three respiratory muscle weaknesses that can cause chronic ventilatory failure.

Answer 8

Motor neurone disease (ALS)
Muscular dystrophy
Glycogen storage disease (Pompe’s disease)

Question 9

Name two central hypoventilation diseases that can cause chronic ventilatory failure.

Answer 9

Obesity hypoventilation syndrome
Congenital central hypoventilation syndrome

Question 10

What are some of the typical symptoms of chronic ventilatory failure?

Answer 10

Breathlessness
Orthopnoea- breathlessness while lying flat
Ankle swelling
Morning headache
Recurrent chest infections
Disturbed sleep