Free COHN-S Practice Test

1. Which pulmonary function test measures the total volume of air expelled in a specific period of time during repetitive maximal effort?

a. Forced vital capacity (FVC)
b. Forced expiratory volume, 1 second (FEV1)
c. Forced expiratory flow, 200-1200 (FEF200-1200)
d. Maximal voluntary ventilation (MVV)

2. Which of the following methods is used to determine monetary savings resulting from planned interventions?

a. Cost-benefit analysis
b. Cost-effective analysis
c. Efficacy study
d. Cost-utility analysis

3. Under provisions of the Family and Medical Leave Act (FMLA), how many workweeks of leave in a 12-month period is a worker entitled to in order to care for his son, an Army service member, who was seriously injured in a bombing incident?

a. 10
b. 12
c. 26
d. 48

4. What type of routine health surveillance is indicated for workers exposed to nitric acid in the workplace?

a. Eyes only
b. Lungs, eyes, and skin
c. Blood pressure
d. Hemoglobin and hematocrit

5. When using a two-step PPD procedure to do skin testing for tuberculosis, the second step in the testing should be completed within one to three

a. hours of first step.
b. days of first step.
c. weeks of first step.
d. months of first step.

Answers & Explanations

1. D: Maximal voluntary ventilation (MVV) is the total volume of air exhaled in a specified period of time (such as 12 seconds) during repetitive maximal effort. Forced vital capacity (FVC) measures the amount of air expelled in forced maximal expiration. Forced expiratory volume (FEV1) is the amount of air expelled in a specified time, usually the first second of expiration (time in seconds indicate by subscript number). Forced expiratory flow (FEF 200-1200) is the mean FEF between 200-1200 mL of FVC.

2. A: A cost-benefit analysis uses average cost of an event and the cost of intervention to demonstrate savings. A cost-effective analysis measures the effectiveness of an intervention rather than the monetary savings. Efficacy studies may compare a series of cost-benefit analyses to determine the intervention with the best cost-benefit. They may also be used for process or product evaluation. Cost-utility analysis (CUA) is essentially a subtype of cost-effective analysis, but it is more complex and the results are more difficult to quantify and use to justify expense because cost-utility analysis measures benefit to society in general, such as decreasing teen pregnancy.

3. C: FMLA allows 26 workweeks of leave in a 12-month period to provide care to a military service member who is a spouse, child, parent, or next-of-kin as part of military caregiver leave. Other entitlements include 12 workweeks of leave in a 12-month period for the birth of a child; adoption or foster care of a child (newly placed); illness of spouse, child, or parent; and a health condition that interferes with the ability to carry out job functions.

4. B: Workers exposed to nitric acid should have routine health surveillance for lungs, eyes, and skin. Nitric acid exposure may include ingestion, inhalation, or direct contact. Nitric acid may cause irritation and damage to the lungs, so periodic chest x-rays and pulmonary function tests are indicated. Nitric acid is also severely irritating to ocular tissue and may result in damage to the eyes. Prolonged contact with the skin may result in dermatitis. Workers with pre-existing disorders of the lungs, eyes, or skin are at increased risk.

5. C: A negative PPD finding can occur with an old infection because sensitivity wanes over time; however, subsequent tests months later might react positively because of the "booster phenomenon" caused by the first test. Therefore, a second test is done one to three weeks after the first to determine the effect of the first test. If the second test converts to positive in this short period of time, then it is considered evidence of a boosted reaction to a previous infection. If the second test is negative, it is considered a true negative and subsequent changes to positive would be considered new infections.


Last Updated: 07/05/2018

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