Definition of Acute radiation syndrome
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Acute radiation syndrome Definition from Government Dictionaries & Glossaries
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Acute radiation syndrome Definition from Encyclopedia Dictionaries & Glossaries
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Acute radiation syndrome (ARS), also known as radiation poisoning, radiation sickness or radiation toxicity, is a collection of health effects which present within 24 hours of exposure to high amounts of ionizing radiation. The radiation causes cellular degradation due to damage to DNA and other key molecular structures within the cells in various tissues; this destruction, particularly as it affects ability of cells to divide normally, in turn causes the symptoms. The symptoms can begin within one or two hours and may last for several months. The terms refer to acute medical problems rather than ones that develop after a prolonged period.
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Acute radiation syndrome Definition from Medicine Dictionaries & Glossaries
CDC Radiological Terms
a serious illness caused by receiving a dose greater than 75 rads of penetrating radiation to the body in a short time (usually minutes). The earliest symptoms are nausea, fatigue, vomiting, and diarrhea. Hair loss, bleeding, swelling of the mouth and throat, and general loss of energy may follow. If the exposure has been approximately 1,000 rads or more, death may occur within 2 – 4 weeks. For more information, see CDC’s fact sheet “Acute Radiation Syndrome” at emergency.cdc.gov/radiation/ars.asp.Source: Centers for Disease Control and Prevention (CDC) ( About )