Ati lpn med surg exam
Ati lpn med surg exam ( 49 Questions)
A 40-year old patient presents with symptoms suggestive of tuberculosis (TB). What is the confirmatory test for TB?
Interferon Gamma Release Assays (IGRAs): IGRAs are useful for detecting TB infection but do not confirm active TB disease. They measure the immune response to TB bacteria but don’t differentiate between latent and active infection.
Sputum culture: Sputum culture is the gold standard for confirming active TB because it identifies Mycobacterium tuberculosis bacteria directly, confirming active infection.
Tuberculin Skin Test (TST): The TST can indicate TB infection but cannot distinguish between latent and active TB, making it unsuitable as a confirmatory test for active disease.
Chest X-ray: A chest X-ray can show signs suggestive of TB but cannot confirm the presence of TB bacteria, so it is not definitive for diagnosing active TB.
A. Interferon Gamma Release Assays (IGRAs): IGRAs are useful for detecting TB infection but do not confirm active TB disease. They measure the immune response to TB bacteria but don’t differentiate between latent and active infection.
B. Sputum culture: Sputum culture is the gold standard for confirming active TB because it identifies Mycobacterium tuberculosis bacteria directly, confirming active infection.
C. Tuberculin Skin Test (TST): The TST can indicate TB infection but cannot distinguish between latent and active TB, making it unsuitable as a confirmatory test for active disease.
D. Chest X-ray: A chest X-ray can show signs suggestive of TB but cannot confirm the presence of TB bacteria, so it is not definitive for diagnosing active TB.