Block 3: HIV CD4 Count - Opportunistic Infections

Question 1

is a fungus that causes severe
interstitial pneumonia
in
AIDS
patients, so prophylaxis against it is started if the
CD4 cell
count falls to below 200 cells/mm3.

Answer 1

Pneumocystis jirovecii

Question 2

reactivation typically occurs in
AIDS
patients with a
CD4+ cell
count less than 200/mm3.

Answer 2

Histoplasma capsulatum

Question 3

Progressive multifocal leukoencephalopathy
typically occurs in
AIDS
patients with a
CD4+ cell
count

Answer 3

less than 200

Question 4

typically occurs in
AIDS
patients with a
CD4+ cell
count less than 500/mm3.

Answer 4

Candida albicans

Question 5

Mycobacterium avium-intracellulare, and mycobacterium avium complex infection typically occur in AIDS patients with a CD4+ cell count

Answer 5

less than 100

Question 6

Cryptosporidium species disease typically occurs in AIDS patients with a CD4+ cell count

Answer 6

less than 100

shows watery diarrhea and stool studies show acid-fast oocysts

Question 7

Cytomegalovirus reactivation, leading to retinitis, esophagitis, colitis, pneumonitis and encephalitis, typically occurs in AIDS patients with a CD4+ cell count

Answer 7

less than 100

Question 8

Aspergillus fumigatus reactivation typically occurs in AIDS patients with a CD4+ cell count less

Answer 8

100

Question 9

Epstein-Barr virus reactivation, leading to B-cell lymphoma, typically occurs in AIDS patients with a CD4+ cell count

Answer 9

less than 100

Question 10

Toxoplasma gondii reactivation typically occurs in AIDS patients with a CD4+ cell count less

Answer 10

than 100

Question 11

Bartonella Henslae causes bacillary angiomatosis skin lesions for a CD4 count

Answer 11

less that 100

Question 12

Cryptosporidium parvum causes watery diarrhea in those with a CD4 count of

Answer 12

less than 200

Question 13

HHV-8 causes Kaposi sarcoma, which manifests as palpable, nonpruritc lesions. It can affect those with a CD4 count of

Answer 13

less than 500