Reference:
Attention:
Motivation:
Objective:
Learning Objective (Index)
- Learning Objective (Index)
- Oxygen Use Requirements
- Physiological Hazards
- Middle Ear
- Sinus Problems
- Tooth Block
- GI Tract
- The Lunges
- Hypoxic Hypoxia
- Hypemic Hypoxia
- Stagnant Hypoxia
- Histotoxic Hypoxia
- Hypoxia Symptoms
- Hypoxia Corrective Actions
- Scuba Diving
- Decompression Sickness
- Scuba Diving Wait Times
- Controlled Dive
- Uncontrolled Dive
- Cabin Pressurization
- Cabin Decompression
- Supplemental Oxygen
Oxygen Use Requirements
For optimum protection, pilots are encouraged to use supplemental oxygen above 10,000ft Day and 5,000ft Night
Altitude | Requirement | Who |
12,500 ft - 14,000 ft | if the flight at that altitude is more than 30 min | Only pilots |
Above 14,000 ft | immediately | All the flight crew |
Above 15,000 ft | immediately | All the passengers on boar and flight crew |
Physiological Hazards
Middle Ear
Sinus Problems
Tooth Block
GI Tract
The Lunges
Hypoxic Hypoxia
Cause by a decrease in pressure with altitude, with more altitude less air density, harder to breath oxygen
High altitude = Less pressure
Hypemic Hypoxia
Occurs when the blood cells are unable to carry oxygen molecules
- Main and most common reason is the Carbon Monoxide Poisoning
Carbon Monoxide Poisoning
Stagnant Hypoxia
G forces does not let the blood-oxygen go to the brain, creating a lack of oxygen
G-Forces
Histotoxic Hypoxia
Occurs when the brain rejects the oxygen from the blood because of toxic substances like alcohol or drugs
Alcohol or Drugs
Hypoxia Symptoms
- Headache
- Decrease Response Times
- Impaired Judgment
- Euphoria
- Dizzy Sensations
- Peripheral Cyanosis
Hypoxia Corrective Actions
- Descent to lower Altitudes
- Stop pulling G-Forces
- Don a Oxygen Mask
Scuba Diving
Scuba diving subject the body to increased pressure, which allows more nitrogen to dissolve in the body tissues and fluids
Decompression Sickness
DCS is the expansion of gases (mainly nitrogen) inside the human body cause by an exposure of low barometric pressure
Scuba Diving Wait Times
Controlled Dive
It’s when a person dives deep enough that they cannot immediately return to the surface at will
⬆️ 8,000 ft | 24 hours |
⬇️. 8,000 ft | 24 hours |
Uncontrolled Dive
It’s when the person does not dive deep enough an can immediately return to the surface at will
⬆️ 8,000 ft | 24 hours |
⬇️. 8,000 ft | 12 hours |
Cabin Pressurization
Cabin Decompression
Supplemental Oxygen