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Aviation medicine, also called flight medicine or aerospace medicine, is a branch of preventive or occupational medicine in which the patients/subjects are pilots and aircrews. Generally speaking preventive medicine is the part of Medicine engaged with preventing Disease rather than curing it Occupational safety and health is a cross-disciplinary area concerned with protecting the Safety, Health and welfare of people engaged in The specialty strives to treat or prevent conditions to which aircrews are particularly susceptible, applies medical knowledge to the human factors in aviation and is thus a critical component of aviation safety. See also The Human Factor (disambiguation. Human factors is a term that covers The science of understanding the properties Aviation refers to activities involving man-made flying devices ( Aircraft) including the people organizations and regulatory bodies involved with them Air safety is a term encompassing the theory investigation and categorization of flight failures, and the prevention of such failures through regulation as well as through A military practitioner of aviation medicine may be called a flight surgeon and a civilian practitioner is an aviation medical examiner. A flight surgeon is a military Medical officer assigned to duties in the clinical field known as flight, or Aviation medicine. An Aviation Medical Examiner (AME in the United States and other countries is a Physician designated by the local aviation authority given the authority to perform

Broadly defined, this subdiscipline endeavors to discover and prevent various adverse physiological responses to hostile biologic and physical stresses encountered in the aerospace environment. Problems range from life support measures for astronauts to recognizing an ear block in an infant traveling on an airliner with elevated cabin pressure altitude. Aeromedical certification of pilots, aircrew and patients is also part of Aviation Medicine. A final subdivision is the AeroMedical Transportation Specially. These military and civilian specialists are concerned with protecting aircrew and patients who are transported by AirEvac aircraft (helicopters or fixed-wing airplanes).

Atmospheric physics potentially affect all air travelers regardless of the aircraft. As humans ascend through the first 9100-18,300 m (30,000-40,000 ft), temperature decreases linearly at an average rate of 2ºC (3. 6ºF) per 305 m (1000 ft). If sea-level temperature is 16ºC (60ºF), the outside air temperature is approximately -57ºC (-70ºF) at 10,700 m (35,000 ft). Pressure and humidity also decline, and aircrew are exposed to radiation, vibration and acceleration forces. . . the latter is also known as "g" forces. Aircraft life support systems such as oxygen, heat and pressurization are the first line of defense against most of the hostile aerospace environment. Higher performance aircraft will provide more sophisticated life support equipment such as "G-suits" to help the body resist acceleration, and pressure breathing apparatus or ejection seats or other escape equipment.

Every factor contributing to a safe flight has a failure rate. The crew of an aircraft is no different. Aviation medicine aims to keep this rate in the humans involved equal to or below a specified risk level. This standard of risk is also applied to airframe, avionics and systems associated with flights.

AreoMedical examinations aim at screening for elevation in risk of sudden incapacitation, such as a tendency towards myocardial infarction (heart attacks), epilepsy or the presence of metabolic conditions diabetes, etc which may be lead to hazardous condition at altitude. Myocardial infarction ( MI or AMI for acute myocardial infarction) also known as a heart attack, occurs when the blood supply Epilepsy is a common chronic Neurological disorder that is characterized by recurrent unprovoked seizures. Diabetes mellitus (ˌdaɪəˈbiːtiːz or /ˌdaɪəˈbiːtəs/ /məˈlaɪtəs/ or /ˈmɛlətəs/ often referred to simply as diabetes ( Ancient Greek: grc The goal of the AeroMedical Examination is to protect the life and health of pilots and passengers by making reasonable medical assurance that an individual is fit to fly. Other screened conditions such as colour blindness can prevent a person from flying because of an inability to perform a function that is necessary. Color blindness, a Color vision deficiency is the inability to perceive differences between some of the Colors that others can distinguish In this case to tell green from red. These specialized medical exams consist of physical examinations performed by an Aviation Medical Examiner or a military Flight Surgeon, doctors trained to screen potential aircrew for identifiable medical conditions that could lead to problems while performing airborne duties. An Aviation Medical Examiner (AME in the United States and other countries is a Physician designated by the local aviation authority given the authority to perform A flight surgeon is a military Medical officer assigned to duties in the clinical field known as flight, or Aviation medicine.

Passive vs. active failures

Anything in the system can fail in two ways. Passive failures occur when something stops working. Examples would be an artificial horizon stops working and a flag shows that it has failed or a pilot who loses consciousness. An attitude indicator (ADI also known as gyro horizon or artificial horizon, is an instrument used in an Aircraft to inform Active failures occur when the item continues to function but in an incorrect manner. Examples would be a trim motor which kept going after the switch was released or a pilot who develops psychotic thinking and behaves in response to that.

See also

External links

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