Stressors of Flight
Hypoxic Hypoxia (Altitude Hypoxia)
Alveolar O2 Pressure / Concentration Deficiency
Inadequate supply to meet demands
O2 carrying deficiency
Hemoglobin Abnormalities (Sickle Cell)
Stagnant - Blood Flow Deficiency
Distributive Shock (Blood Pooling)
Histotoxic - O2 Usage Problem
Hemoglobin can’t onload oxygen, or utilized oxygen
Cyanide Poisoning (Nitroprusside)
Mitochondria unable to utilize oxygen
Poorly vented aircraft exhaust
Rules and Regulations
Use of oxygen by crew member and pilots
PIlots must utilize oxygen at altitudes between 12,500 - 14,000 fee for greater than 30 minutes, and at anytime above 14,000 ft.
Unpressurized aircraft - Pilot shall use oxygen continuously when flying above 10,000 through 12,000 feet MSL for greater than 30 minutes, or any time above 12,000 feet.
Pilots must utilize oxygen when flying above 9,000 feet MSL for greater than 30 minutes.
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