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Asbestos Toxicity
Posttest

Course: WB 2344
CE Original Date: January 29, 2014
CE Expiration Date: January 29, 2016
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Posttest

  1. What is asbestos?

    1. A. A group of naturally occurring fibrous silicate minerals.
    2. A fibrous substance used widely throughout the United States in the construction, shipbuilding, and automotive industries until the 1970s.
    3. A heat-stable substance commonly used in insulation, pipe coverings, boilers, brake pads, and many other products.
    4. All of the above.
  2. Which asbestos exposure pathway most commonly leads to illness?

    1. Ingestion.
    2. Inhalation.
    3. Dermal contact.
    4. All are equally important.
  3. Of the following, in the United States, the people in the general population most at risk of exposure to asbestos today are

    1. People who work in asbestos mining and milling.
    2. Household contacts of workers engaged in the manufacture of asbestos-containing products.
    3. People working or living in homes and buildings with loose, crumbling, or disturbed asbestos materials.
    4. People who garden with vermiculite potting soil.
  4. OSHA requires workers who are exposed to asbestos at levels higher than the PEL of 0.1 fibers/cc of air (8-hour TWA) to

    1. Receive medical surveillance.
    2. Be hospitalized immediately.
    3. File claims for work-related injuries.
    4. All of the above.
  5. After inhalation, asbestos fibers

    1. Are retained in the lungs, especially the lower lung fields.
    2. Initiate responses that can lead to fibrosis of lung tissue.
    3. Initiate responses that can lead to carcinogenesis.
    4. All of the above.
  6. Of the respiratory conditions associated with asbestos exposure, the condition that is not malignant but is associated with significant restrictive deficits is

    1. Asbestosis.
    2. Asbestos-related pleural abnormalities.
    3. Lung carcinoma.
    4. Pleural mesothelioma.
  7. Which condition is most likely to occur secondary to asbestos-associated pulmonary fibrosis?

    1. Peritoneal mesothelioma.
    2. Colon cancer.
    3. Cor pulmonale.
    4. Constrictive pericarditis.
  8. The most important risk factor for asbestos-associated diseases are

    1. Genetic polymorphisms and exposure to air pollution.
    2. Total exposure to asbestos and smoking.
    3. Frequency of respiratory infections and coexistence of other fibrotic respiratory conditions.
    4. All are equally important.
  9. A 64-year-old male who worked in shipyards in the United States in the 1960s and 1970s presents to his physician complaining of breathlessness, especially when he works or exercises. He says this symptom began several years ago but was so minor that he was not concerned. He also complains of a slight, nagging dry cough. Of the asbestos-associated diseases, the most likely culprit is

    1. Asbestosis.
    2. Asbestos-related pleural abnormalities.
    3. Lung carcinoma.
    4. Pleural mesothelioma.
  10. On auscultation of a patient with asbestosis, you are most likely to hear

    1. Normal breath sounds.
    2. Absent breath sounds.
    3. Bibasilar end inspiratory rales.
    4. Rhonchi.
  11. As part of taking the exposure history, you should explore

    1. Possible occupational exposures to asbestos.
    2. Possible paraoccupational and secondary exposures to asbestos.
    3. Use of personal protective equipment.
    4. All of the above.
  12. Pulmonary function tests of a patient with asbestosis are most likely to show

    1. Normal results.
    2. Low FVC.
    3. Low FEV1.
    4. Low FEV1/FVC.
  13. On chest radiograph, small, irregular opacities in the bases of both lung fields is suggestive of

    1. Asbestosis.
    2. Pleural plaques.
    3. Benign asbestos pleural effusion.
    4. Diffuse pleural thickening.
  14. In caring for a patient who was exposed to asbestos, it is important to

    1. Take steps to avoid further exposure to asbestos.
    2. Counsel the patient to stop smoking.
    3. Monitor the patient to facilitate early treatment of chest infections.
    4. All of the above.
  15. Patients diagnosed with an asbestos-associated disease should be instructed to

    1. Continue working with asbestos as long as they use PPE.
    2. Contact their doctor if they develop any sign of respiratory infection or other health change.
    3. Receive influenza and pneumococcal vaccines only if they meet other criteria for being high risk.
    4. All of the above.
  16. Asbestos fibers are released into the air mainly when

    1. Asbestos-containing materials are loose, crumbling, or disturbed.
    2. Asbestos is fixed in solid materials such as wallboard.
    3. Asbestos-bearing rock lays unexposed deep underground.
    4. All of the above.
  17. Which of the following is EPA's MCL for asbestos in drinking water?

    1. 0.07 fibers per liter of drinking water.
    2. 7 million fibers per liter of drinking water.
    3. 700 fibers per liter of drinking water.
    4. 70,000 fibers per liter of drinking water.
  18. Diffuse interstitial fibrosis resulting from inhalation of asbestos fibers and producing restrictive lung disease and progressive exertional dyspnea is termed

    1. Lung carcinoma.
    2. Pleural mesothelioma.
    3. Asbestosis.
    4. Asbestos-related pleural abnormalities.
  19. Asbestos-related pleural abnormalities include which of the following?

    1. Pleural plaques.
    2. Benign pleural effusions and diffuse pleural thickening.
    3. Rounded atelectasis.
    4. All of the above.
  20. The most typical abnormal finding on physical examination of a patient with significant asbestosis is

    1. A “doughy” feeling in the abdomen.
    2. Bibasilar inspiratory rales on pulmonary auscultation.
    3. Clubbing of the fingers.
    4. All of the above.
  21. The two most important tests for diagnosing asbestos-associated diseases are

    1. BAL and lung biopsy.
    2. CT and HRCT scans.
    3. Chest radiograph and pulmonary function tests.
    4. Blood studies and colon cancer screening.
  22. Managing asbestosis involves

    1. Smoking cessation.
    2. Annual influenza and pneumococcal vaccines as recommended by the Centers for Disease Control.
    3. Respiratory therapies and pulmonary rehabilitation.
    4. All of the above.
  23. Patients who were exposed to asbestos should

    1. Stop smoking.
    2. Avoid further exposure to asbestos.
    3. Avoid exposure to respiratory infections and contact their doctor if they get signs of infection or other health changes.
    4. All of the above.

Relevant Content

To review content relevant to the posttest questions, see:

Question Location of Relevant Content
1. What Is Asbestos?
  • Explain what asbestos is
2. How Are People Exposed to Asbestos
  • Identify the most important route of exposure to asbestos which leads to health effects.
3. Who Is at Risk of Exposure to Asbestos
  • Name the populations most heavily exposed to asbestos
  • Describe who is at risk of domestic exposure to asbestos
4. What Are U.S. Standards for Asbestos Levels
  • Explain the OSHA PEL for asbestos
5. What Is the Biological Fate of Asbestos
  • Identify where asbestos fibers are most likely to be found in the body


How Does Asbestos Induce Pathogenic Change
  • Describe the mechanisms by which scientists hypothesize asbestos induces pathogenic changes in the lungs
6. What Respiratory Diseases Are Associated with Asbestos
  • Describe the four respiratory conditions associated with asbestos exposure
7. What Other Diseases Are Associated with Asbestos
  • Identify non-respiratory conditions that might be associated with exposure to asbestos
8. How Should Patients Exposed to Asbestos Be Evaluated
  • dentify the primary focuses of the patient exposure history
9. How Should Patients Exposed to Asbestos Be Evaluated
  • Identify the primary focuses of the patient exposure history
10. How Should Patients Exposed to Asbestos Be Evaluated
  • Describe the most typical finding on the patient evaluation
11. How Should Patients Exposed to Asbestos Be Evaluated
  • Identify the primary focuses of the patient exposure history (exposure and medical) history and
12. What Tests Can Assist with Diagnosis of Asbestos-related Disease?
  • Describe pulmonary function tests associated with asbestosis
13. What Tests Can Assist with Diagnosis of Asbestos-related Disease?
  • Describe chest radiograph findings associated with other asbestos-associated diseases
14. How Should Patients Exposed to Asbestos Be Treated and Managed
  • Identify two primary strategies for managing asbestos associated diseases
15. What Instructions Should Be Given to Patients
  • List two instructions for clinical follow-up
16. Where is asbestos found
  • Describe how asbestos is released into the air
17 What Are U.S. Standards for Asbestos Levels
  • Explain the EPA maximum contaminant level for asbestos in drinking water
18. What Respiratory Diseases Are Associated with Asbestos
  • Describe the four respiratory conditions associated with asbestos exposure
19. What Respiratory Diseases Are Associated with Asbestos
  • Describe the four respiratory conditions associated with asbestos exposure
20. How Should Patients Exposed to Asbestos Be Evaluated
  • Describe the four respiratory conditions associated with asbestos exposure
21. What Tests Can Assist with Diagnosis of Asbestos-related Disease?
  • Describe chest radiograph findings associated with other asbestos-associated diseases
22. How Should Patients Exposed to Asbestos Be Treated and Managed
  • Describe specific strategies for managing asbestosis
23. What Instructions Should Be Given to Patients
  • List four instructions for patient self-care
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