the biological effects of radiation -...
TRANSCRIPT
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Four things can happen when radiation enters a cell:
1. The radiation may pass through without any damage occurring;
2. The radiation may damage the cell, but the cell repairs the damage;
3. The radiation may damage the cell…the damage is not repaired…and the cell
replicates itself in the damaged form;
4. The cell dies.
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Hematologic Syndrome
Prodromal Stage: Mild symptoms appear within a few hours and last for several days
Latent Period: May last up to 4 weeks
Manifest Illness: Vomiting, diarrhea, fatigue and fever – Decline in blood cells –
Recovery in 2 to 4 weeks…May last up to 6 months
Possible death due to infection, dehydration or hemorrhage
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Gastrointestinal Syndrome
Prodromal Stage: Vomiting and diarrhea occur within hours and last up to one day
Latent Period: Lasts 3-5 days
Manifest Illness: Nausea, vomiting and diarrhea – Worsens to bloody stools
Death within 4 to 10 days after exposure primarily due to intestinal cell damage –
Also damage to blood-forming tissue results in hemorrhaging and dehydration.
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Central Nervous System Syndrome
Prodromal Stage: Severe nausea and vomiting within a few minutes – Nervousness,
confusion, burning skin, vision loss…possible loss of consciousness
Latent Period: May last up to 12 hours, or not at all
Manifest Illness: Disorientation, loss of muscle control, breathing problems, seizures,
coma
Death always within a few days of exposure – due to increased fluid in brain
(pressure) – Death occurs before hematologic and gastrointestinal symptoms appear
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