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"Because I had a previous reaction to the test, this time I need to get a chest X-ray." indicates a client understands teaching about the purified protein derivative (PPD) test for tuberculosis.
A client who has previously had a positive PPD test (a response to the antigen) cannot get another PPD test; they must instead undergo a chest X-ray. After administration, the test should be read 48 to 72 hours later. An induration of more than 10mm indicates a positive test; skin redness at the test site does not. During the test time, the customer is not required to limit their interactions with others. A skin test called a purified protein derivative (PPD) can tell you whether you have tuberculosis. The bacteria Mycobacterium tuberculosis is the cause of TB, a serious infection that typically affects the lungs. When you inhale air that has been exhaled by a person who has TB, this bacteria is spread. For years, the bacteria may remain dormant in your body.
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the complete question is:
Which statement indicates a client understands teaching about the purified protein derivative (PPD) test for tuberculosis?
1. "If the test area turns red that means I have tuberculosis."
2. "I will avoid contact with my family until I am done with the test."
3. "I will come back in 1 week to have the test read."
4. "Because I had a previous reaction to the test, this time I need to get a chest X-ray."
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