Section 8: Respiratory Diseases including Pneumonias

Question 1

———- gives branching, gram-positive filaments that are weakly acid fast.

Fischer, Conrad (2012-09-22). Master the Boards: USMLE Step 3 (Kindle Locations 1308-1309). . Kindle Edition.

Answer 1

Norcadia

Question 2

Norcadia:

1. Best initial test
2. Most accurate test
3. Rx

Answer 2

1. Chest X-ray
2. Culture
3. TMP/SMX

Question 3

Norcadia:

1. Those at risk
2. Most common areas of dissemination of pulmonary disease

Answer 3

• Immunocompromised:
  • Leukemia
  • Lymphoma Prolong steroid use
  • HIV
• Skin and brain

Question 4

Clues to histoplasmosis

Answer 4

Clues to histoplasmosis

• Wet areas: Ohio and Mississippi River valeys
• Lung disease with viral syndrome
• Associated with bat droppings from caves
• Palate and oral ulcers on PE
• Splenomegaly on PE

Anything TB can do histoplasmosis can do

Question 5

Histoplasmosis

1. Best initial test
2. Most accurate test
3. Rx of histoplasmosis

Answer 5

1. Histoplasmosis urine antigen
2. Biopsy with culture is most accurate for both histoplasmosis (and tuberculosis)
3. Acute pulmonary disease is transient and requires no therapy; The disseminated disease is treated with amphotericin

Fischer, Conrad (2012-09-22). Master the Boards: USMLE Step 3 (Kindle Locations 1330-1331). . Kindle Edition.

Question 6

———- is an acute respiratory illness that occurs in very dry areas like Arizona. It causes joint pain and erythema nodosum.

Rx for above condition

Fischer, Conrad (2012-09-22). Master the Boards: USMLE Step 3 (Kindle Locations 1335-1337). Kindle Edition.

Answer 6

Coccidioidomycosis

Itraconazole

Question 7

Diagnosis: Broad budding yeast

Rx of above condition

Fischer, Conrad (2012-09-22). Master the Boards: USMLE Step 3 (Kindle Location 1344). . Kindle Edition.

Answer 7

Blastomycosis

Amphotericin or Itraconazole

Question 8

What is the Centor criteria for the diagnosis of Streptococcus pharyngitis?

Answer 8

• Fever
• Tonsillar exudates
• Tender cervical adenopathy
• Absence of cough