Oxygen Therapy

Question 1

What normal spo2 is acceptable?

Answer 1

92-96%

Question 2

Management for paraquat and bleomycin poisoning

Answer 2

Prophylactic hypoxaemia 85-88%

Question 3

Mx for mild-moderate hypoxaemia 85-91%

Answer 3

2-6L via NP

Consider simple face mask 5-10L

Question 4

Mx for severe hypoxaemia spo2 <85% or critical illnesses

Answer 4

10-15L via NRB
When haemodynamically stable titrate to spo2 92-96%

If deteriorates or spo2 remains <85% BVM with 100% O2 and consider SGA

Question 5

Critical illnesses for O2 (7)

Answer 5

Cardiac arrest or resus
Major trauma/head injury
Shock
Severe sepsis
Anaphylaxis 
Status epilepticus 
Ketamine sedation

Question 6

Chronic hypoxia conditions (6)

Answer 6

COPD
Neuromuscular disorders
Cystic fibrosis
Bronchiectasis
Severe kyphoscokiosis
Obesity

Question 7

Mx for chronic hypoxaemia

Answer 7

Titrate to spo2 88-92%
If no critical illness present 2-6L via NP
Consider face mask 5-10L

If deteriorates or spo2 remains <85% Mx as per severe hypoxaemia

Question 8

Who gets 10-15L via NRB regardless of spo2? (6)

Answer 8

Toxic inhalation exposure
Decompression illness 
Cord prolapse
PPH
Shoulder dystocia
Cluster headache

Question 9

When to suspect a pt has COPD

Answer 9

Over 40 who smokes/ex-smoker, progressive dyspnoea, chronic cough/sputum production, family Hx COPD