Assessment and Posttest Instructions
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Posttest
Please select the best correct answer
- Uranium is found naturally in
- Rocks.
- Soils.
- Animals.
- Water.
- All of the above.
- None of the above.
- Where can uranium be found in the United States today?
- Naturally occurring in the environment (including mine and mill tailings).
- At nuclear fuel production facilities.
- In residential and commercial products.
- All of the above.
- Both A and B only.
- Enriched uranium
- Contains more U-235 than natural uranium.
- Is less radioactive than natural uranium.
- Has diverse therapeutic uses.
- Is created when meteors strike the earth.
- Uranium is used
- In nuclear power plants.
- To counter balance helicopter blades.
- As armor for military vehicles.
- As a part of certain kinds of bullets.
- All of the above.
- None of the above.
- In the past, occupations that entailed exposure to uranium included which of the following?
- Uranium miners and millers.
- Repairmen and maintenance workers at uranium enrichment facilities.
- Nuclear fuel processors.
- All of the above.
- Of the following, who is LEAST likely to currently be at risk of significant environmental uranium exposure? A person
- Living downwind of a uranium processing facility.
- Whose primary source of drinking water is a well contaminated by naturally occurring uranium.
- Living near a mine undergoing remediation activities.
- Living near a nuclear power plant.
- In general, exposure to uranium in the natural environment occurs primarily via
- Inhalation.
- Ingestion.
- Dermal contact.
- None of the above.
- Which of the following is false regarding the OSHA PEL of 0.05 mg/m3 for airborne soluble uranium in the workplace?
- It is an 8-hour, time-weighted average.
- It is lower than the insoluble uranium OSHA PEL because soluble uranium compounds are absorbed to a greater extent by the body.
- It is higher than the insoluble uranium OSHA PEL.
- For the same exposure, soluble uranium compounds are more likely to cause chemical effects than insoluble uranium.
- EPA’s MCL of 30 micrograms per liter of uranium in drinking water refers to which of the following?
- The EPA marginal clean-up level for drinking water.
- The EPA maximum contaminant level allowed in drinking water.
- The EPA minimum contaminant level allowed in drinking water.
- None of the above.
- Most inhaled uranium that reaches the lungs
- Becomes lodged and is retained in lung tissue.
- Is eliminated via mucociliary clearance.
- Is absorbed.
- Is exhaled.
- The radioactivity from uranium is primarily
- Alpha particles.
- Beta particles.
- Gamma rays.
- Muons.
- All of the above.
- None of the above.
- Exposure to natural uranium increases a person’s risk of getting cancer
- True.
- False.
- Exposure to uranium is associated with
- Heart disease.
- Emphysema.
- Rheumatologic disease.
- Renal disease.
- Neurodegenerative disease.
- All of the above.
- Only B and D.
- None of the above.
- The most typical biomarkers of effect for a patient with uranium nephrotoxicity is
- Increased â2-microglobulin on urinalysis.
- Aminoaciduria.
- Proteinuria.
- All of the above.
- Why is it important to know a patient’s exposure history?
- The biomarkers of effect are not unique to uranium exposure.
- Other concurrent exposures may be more toxic and more important to future patient care.
- It is important to determine if exposures are ongoing or occurred in the past.
- All of the above.
- Biomarkers of uranium exposure include
- The presence of uranium in feces.
- Pathognomonic changes in an EMG (electromyogram).
- The chemical or radiological detection of uranium in the urine.
- Both A and C.
- All of the above.
- None of the above.
- Standard treatment modalities in the United States for patients with acute uranium nephrotoxicity include which of the following?
- Administration of sodium bicarbonate.
- Urine monitoring for pH, uranium concentration and biomarkers of effect.
- Chelation.
- Both A and B.
- All of the above.
Relevant Content
To review content relevant to the posttest questions, see:
Question | Location of Relevant Content |
---|---|
1 | What Is Uranium? |
2 | Where Is Uranium Found? |
3 | What Is Uranium? |
4 | What Is Uranium? |
5 | Who Is at Risk of Exposure to Uranium? |
6 | Who Is at Risk of Exposure to Uranium? |
7 | What Are Routes of Exposure for Uranium? |
8 | What Are Standards and Regulations for Uranium Exposure? |
9 | What Are Standards and Regulations for Uranium Exposure? |
10 | What Is the Biologic Fate of Uranium in the Body? |
11 | How Does Uranium Induce Pathogenic Change? |
12 | How Does Uranium Induce Pathogenic Change? |
13 | What are the Physiologic Effects of Uranium Exposure? |
14 | Clinical Assessment |
15 | Clinical Assessment |
16 | Clinical Assessment |
17 | How Should Patients Exposed to Uranium Be Treated and Managed? |