Rubin's Bacterial Infections

Question 1

Cause of scalded skin syndrome?

Answer 1

exotoxin of S. aureus

Question 2

What is a carbuncle?

Answer 2

coalescing infections around the hair follicles and draining sinus

Question 3

Major cuse of infections involving medical devices?

Answer 3

coagulase negative staph

Question 4

Main illnesses of S. pyogenes?

Answer 4

Pharyngitis and rheumatic fever

Question 5

Possible complications of S. pyogenes?

Answer 5

PSGN and rheumatic fever

Question 6

What leads to scarlet fever?

Answer 6

erythrogenic toxin on S. pyogenes

Question 7

“erythematous swelling of the skin caused by S. pyogenes (begins on face and spreads rapidly)”

Answer 7

erysipelas

Question 8

“honey colored crusts that is caused by S. pyogenes”

Answer 8

Impetigo

Question 9

Is the pneumonia caused by S. pneumo diffuse or lobar?

Answer 9

Lobar

Question 10

What can S. pneumo cause?

Answer 10

Pneumonia, otitis media, sinusitis, meningitis

Question 11

Which gram (+) cocci grow in short chains?

Answer 11

GBS

Question 12

Major cause of neonatal pneumonia, meningitis, and sepsis?

Answer 12

GBS

Question 13

“necrotizing upper respiratory tract infection caused by gram (+) rods”

Answer 13

Diphtherla

Question 14

Mechanism of diphtheria toxin?

Answer 14

interrupts protein synthesis

Question 15

“thick leathery gray membrane composed of sloughed epithelium, necrotic debris, fibrin and bacteria”

Answer 15

Diphtheria

Question 16

“debilitating paroxysmal coughing and high pitched inspiration”

Answer 16

Pertussis

Question 17

key lab finding in pertussis?

Answer 17

leukocytosis

Question 18

2nd most common cause of meningitis in children <2yo?

Answer 18

H, influenzae

Question 19

Possible compication of N. meningitidis?

Answer 19

Waterhouse friedrechsen syndrome (vasculitis + thrombosis + hemorrhagic necrosis)

Question 20

Cause of Chancroid?

Answer 20

H. ducreyi

Question 21

What does gonorrhea cause in newborns?

Answer 21

blindness, conjunctivitis

Question 22

What is a bubo?

Answer 22

ingunal LAD

Question 23

Cause of granuloma inguinale?

Answer 23

C. granulomatis

Question 24

Complication of granuloma inguinale?

Answer 24

elephantitis

Question 25

Where does S. typhi invade?

Answer 25

Peyer’s patches

Question 26

Symptoms of typhoid fever?

Answer 26

prolonged fever, malaise, wasting, typhoid nodules

Question 27

Action of cholera toxin?

Answer 27

increase cAMP leading to massive secretion of Na and water

Question 28

Most common cause of bacterial diarrhea in the developed world?

Answer 28

Campylobacter

Question 29

Possible complication of campylobacter?

Answer 29

Guillain barre

Question 30

Causes mesenteric lymphadenitis?

Answer 30

Yersinia