Block 1: MCC

Question 1

S. aureus is the MCC of what cardiac pathology?

Answer 1

Infective carditis

Question 2

If an IV drug user is infected with s. aureus, what heart valve will be affected?

Answer 2

the tricuspid valve

Question 3

A patient affected by an encapsulated bacteria will suffer a much more severe infection because they are____

Answer 3

Asplenic

Question 4

Asplenic patients are mainly infected by either encapsulated bacteria or Intraerythrocytic parasites. Name examples of each…

Answer 4

Encapsulated bacteria

s. pneumonia, Hib, N. meningitidis

Intraerythrocytic parasites

Babesia microti (endemic on NE seaboard - Cape Cod, Nantucket)

Plasmodium (Malaria)

Question 5

Osteomyelitis

Answer 5

S. aureus is the most common cause

Question 6

Acute endocarditis

Answer 6

classically in an IV drug abuser (S. aureus is the most common cause of acute endocarditis—vs. subacute endocarditis, which is most commonly caused by Viridans Streptococcus)

Question 7

S. aureus is the most common cause of:

Answer 7

Hospital-acquired bacterial pneumonia (esp. post-viral infection)

Ventilator-associated bacterial pneumonia (P. aeruginosa is #2)

Cellulitis

Osteomyelitis

Impetigo

Acute infective endocarditis

Question 8

The three most common causes of neonatal meningitis from 0-6 months is:

Answer 8

S. agalactiae
E. coli
Listeria