Chapter 3 - Atmosphere and Respiration (PP chp 4 & 16)

Question 1

What is Hypoxia? Types of Hypoxia?

Answer 1

Lack of 02 for body needs

• Anaemic Hypoxia (lack of haemoglobins due to blood loss, iron deficiency…)
• Hypoxic Hypoxia (lack of 02)

Question 2

Factors of Hypoxic Hypoxia (7)?

Answer 2

Altitude
Fatigue
Health
Age
Stress
Rate & Time of Decompression
Smoking

Question 3

What is Hyperventilation?

Answer 3

Higher breathing rate than necessary. Lack of carbonic acid in blood (High alkalinity)

Question 4

Symptoms of Hypoxia (11)?

Answer 4

Increased Breathing / Heart rate
Decision Making
Tingling
Loss of senses
Headache
Dizziness
Cyanosis
Euphoria
Tunnel Vision
Impaired motor skills

Question 5

What symptoms differentiate Hypoxia from other conditions? What are the worse symptoms? What symptom is not part of Hypoxia?

Answer 5

Differentiate:
Cyanosis
Euphoria

Worse:
Impaired Judgement
Lose of senses

Not part:
Nausea / Vomiting

Question 6

Hypoxia Thresholds and Corresponding Altitudes?

Answer 6

Reaction Threshold 0 - FL70 (Night vision degraded)
Disturbance Threshold FL70 - FL120
Critical Threshold FL120+ (Loss conciousness, death)