Hypoxia Flashcards
Definition
Body Lacks Oxygen
Types
Hypoxic
Hypemic
Stagnant
Histotoxic
Hypoxic Hypoxia
Not enough oxygen in the air that the body breathes
Hypemic Hypoxia
Reduced capability of the blood to carry oxygen
Stagnant Hypoxia
circulation of blood w/oxygen is inadequate
Histotoxic Hypoxia
Body tissue interference to use oxygen
Signs/symptoms Definition
very from person to person. common to flight at or above 10000 ft
Examples of Signs/ Symptoms
Heavy breathing, dizziness, Blurred/tunnel vision, poor judgement, anxiety, hot/cold flashes, numbness/tingling, lack of muscle coordination, Fatigue, Headache, Anger, euphoria, hyperventilation, confusion, cyanosis
Stages of Hypoxic Hypoxia
Indifferent
Compensatory
Disturbance
Critical
Stages of Hypoxic Hypoxia: Oxygen LEvel
Indifferent- 98-90%
Compensatory- 89-80%
Disturbance- 79-70%
Critical- 69-60%
Stages of Hypoxic Hypoxia: Approximate Pressure Altitude
Indifferent- 0-10,000PA
Compensatory- 10-15,000PA
Disturbance- 15-20,000PA
Critical- 20-25,000PA
Stages of Hypoxic Hypoxia: Symptoms at each Stage
Indifferent- Decrease Night Vision
Compensatory- Drowsy, poor judgement, Decrease muscle coordination and efficiency
Disturbance-impaired flight control, decreased intellectual function and judgement, handwriting, speech, vision, decreased memory, sensation to pain
Critical- Circulatory/nervous system failure, convulsions, cardiovascular collapse, death
Suseptability
Depends on person and mission of aircraft
Effects
most important related to nervous system (Brain)
Prevention
Understanding causes and types
limited time at altitude
supplemental O2
