Hypoxia

Question 1

Hypoxia definition?

Answer 1

Inadequate tissue supply of oxygen

Question 2

Hypoxaemia definition?

Answer 2

Inadequate arterial blood concentration of oxygen

Question 3

What constitutes a patient being hypoxaemic?

Answer 3

1. PaO2 <8kPa

2. SATS<90%

Question 4

What are the causes of increased metabolism? Which will increase PACO2?

Answer 4

1. sepsis
2. malignant hyperthermia
3. neurolept malignant

Question 5

What are the causes of low V/Q or shunt?

Answer 5

1, atelectasis

2. pneumothorax
3. pleural effusion
4. aspiration
5. LRTI

Question 6

What is the Rx for low V/Q?

Answer 6

1. CPAP/PEEP
2. IPPV
3. intubated

Question 7

What does it mean when a patient has SATS of <90% even if they are on 40% Fi02 with a pink mask?

Answer 7

1. Oxygen is not enough

2. You need extra measures like CPAP