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Agency for Toxic Substances and Disease Registry Case Studies in Environmental Medicine (CSEM)
Lead Toxicity Posttest Instructions
Course: WB 1105 CE Original Date: August 20, 2007 CE Expiration Date: August 20, 2010
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- Lead is a
- soft, heavy, blue-gray metal
- naturally occurring substance
- commercially used substance
- All of the above.
- Which statement is true of organic lead?
- It is more commonly found in home environments today than is inorganic lead.
- It was the most available source of exposure through natural processes.
- It was a common source of lead exposure in the U.S. when leaded gasoline was used.
- It cannot enter the body through dermal exposure.
- Of the following, the U.S. population most at risk from exposure to lead today is
- people who work in lead mining and smelting
- household contacts of workers engaged in the manufacture of lead-containing products
- children living in pre-1978 buildings with deteriorated paint
- construction workers
- In older urban areas, most of the lead in the environment today comes from
- contaminated drinking water
- lead-contaminated dust, soil, and deteriorated lead-based paint
- imported food, home remedies, and cosmetics
- commercial products containing lead
- Which of the following is not considered a potential source of lead exposure?
- jewelry
- treated lumber
- imported cosmetics and home remedies
- glazed ceramics
- What is the Center for Disease Control’s blood lead action level for children?
- 5 µg/dL
- 10 µg/dL
- 25 µg/dL
- 40 µg/dL
- The most important route of exposure to lead by children is
- ingestion
- inhalation
- dermal contact
- All are equally important.
- Which of the following signs or symptoms is not consistent with childhood lead poisoning?
- recurrent headaches
- attention Deficit Hyperactivity Disorder
- decreased hearing and speech abilities
- difficulty learning
- In caring for an adult patient with a blood lead level of 40 µ/dL, it is most important to
- continue to monitor with monthly capillary blood tests
- take steps to avoid further exposure to lead
- immediately start chelation therapy
- encourage a diet high in calcium
- As part of the exposure history, you should explore
- possible lead exposure at work or during hobbies
- hobbies that might involve lead
- use of imported home remedies and cosmetics
- All of the above.
- OSHA requires written notification and a medical examination for workers with blood lead levels of
- 10 µg/dL
- 25 µg/dL
- 40 µg/dL
- 70 µg/dL
- At a 24 month well-child check up, under what circumstances should you order a venous blood lead level?
- If the 12-month blood test showed a prior elevation over 10 ug/dL or no prior blood lead level is available.
- If child is living or spending significant time in pre-1978 housing.
- If a household member works in a job involving lead.
- All of the above.
- Why would a patient’s BLL drop only gradually, even with complete removal from the source of exposure?
- Lead’s half-life in the blood is almost one year.
- Everyone is exposed to high background levels of lead.
- Lead stored in the bones and soft tissues may be released over time.
- None of the above.
- Chronic lead exposure is not believed to contribute to which of the following conditions
- hypertension
- kidney disease
- diabetes
- low sperm count
- You should tell patients who are concerned about lead in their drinking water that
- As long as they don’t have well water, their water is safe.
- Until they can get their water tested, boil their drinking water.
- Drinking water is non-acidic and will not leach lead out of old pipes, fixtures, or solder
- Until they can get their water tested, run cold water for one to two minutes before use.
- Which of the following statements about sources of lead in the environment is true?
- Lead dust can raise children’s blood lead levels above the level of concern.
- Lead is heavy, so it does not travel far in the air from smelters or industries.
- Lead is only a problem in urban areas with pre-1978 housing.
- Children who eat paint chips make up the majority of those with blood lead levels above 10 µg/dL.
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Question |
Location of Relevant Content |
1. |
What is lead? |
2. |
What is lead? |
3. |
Who is at risk of lead exposure? |
4. |
Where is lead found? |
5. |
How are people exposed to lead? |
6, |
What Are the U.S. Standards for lead levels? |
7. |
How are patients exposed to lead |
8. |
How should patients exposed to lead be evaluated? |
9. |
What Are the U.S. Standards for lead levels? |
10. |
How should patients exposed to lead be evaluated? |
11. |
What Are the U.S. Standards for lead levels? |
12. |
What is the biologic fate of lead?
What are the physiologic effects of lead |
13. |
What are the physiologic effects of lead? |
14. |
What instructions should be given to patients? |
15. |
Where is lead found? |
16. |
Where is lead found? |
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