Week 7

Question 1

What are the 4 groups of factors that affect oxygenation?

Answer 1

1. Physiological
2. Developmental
3. Behavioural
4. Environmental

Question 2

List 3 Physiological Affects that Influence Oxygenation

Answer 2

1. Decreased oxygen-carrying capacity (low haemoglobin)
2. Decreased inspired volume (upper and lower airway obstruction)
3. Hypovolaemia (reduced circulating blood volume)

Question 3

How do Developmental Affects Influence Oxygenation?

Answer 3

• Premature infants (surfactant deficiency)
• Infants and toddlers (risk of URTI)
• School age children and adolescents (URTI and smoking)
• Young and middle age adults (smoking, diet)
• Older adults (ageing associated changes)

Question 4

List 3 Behavioural Affects that Influence Oxygenation

Answer 4

1. Nutrition
2. Exercise
3. Smoking

Question 5

List 3 Environmental Affects that Influence Oxygenation

Answer 5

1. Climate pollution
2. Dust
3. Asbestos

Question 6

List 3 Factors that Affect Chest Wall Movement

Answer 6

1. Pregnancy
2. Obesity
3. Pain

Question 7

Define “Hyperventilation”

Answer 7

Excess ventilation required to eliminate CO2

Question 8

Define “Hypoventilation”

Answer 8

Inadequate ventilation to meet body’s O2 demands

Question 9

Define “Hypoxia”

Answer 9

Inadequate tissue oxygenation at cellular level

Question 10

Define “Cyanosis”

Answer 10

Blue discolouration of skin and mucous membranes

Question 11

List 3 Symptoms of Hypoxia

Answer 11

1. Cyanosis
2. Clubbed nails
3. Dyspnoea