Which of the following is a true statement about tuberculosis ...

[vicotolentino]

Which of the following is a true statement about tuberculosis (TB) in older adults?
 
  a. The principal threat from TB is its highly contagious nature.
  b. The tuberculin purified protein derivative (PPD) is a conclusive test for TB.
  c. Antimicrobial drugs have made TB an infection of the past.
  d. Older persons, particularly those in nursing homes, are at risk for TB.

Question 2

Mark the area of the eye where glaucoma causes fluid to accumulate on the illustration.
 
  What will be an ideal response?

[jomama]

Answer to Question 1

D
Most reported cases of TB among older adults are from nursing homes. TB is not as contagious as formerly suggested, but drug-resistant forms exist and are a serious risk for older adults who are immunocompromised. A PPD test has a false-negative rate of approximately 30. When the result is positive, the patient receives a sputum culture and a chest x-ray examination. A positive sputum culture is necessary to confirm the diagnosis. Although medications such as isoniazid (INH) were thought to have eliminated TB, the organism is still present in multidrug-resistant forms. Older adults who contracted TB before the 1940s may suffer reactivation of the bacte-rium.

Answer to Question 2

X' Acute angle-closure and open-angle glaucoma are caused when the balance between intraocular fluid production and drainage is disrupted, resulting in increased intraocular pressure.

[vicotolentino]

Gracias!

[juliaf]

Excellent