Bacterial

Question 1

rat bite

Answer 1

• Streptobacillus moniliformis in USA
• Spirillium minus in asia

Question 2

Erythrasma

Answer 2

Corynebacterium minutissimum

Question 3

Slow growing Mycobacterium

Answer 3

• > 2 weeks
• MAC
• M. kensasii
• M. marinum
• M. xeopi

Question 4

Rapid growing Mycobacterium

Answer 4

• > 2 weeks
• M. Abscessus
• M. chelonae
• M. fortuitum

Question 5

Mycobacterium need help growing

Answer 5

• M. marinum
• M. haemophilum
• M. ulcerans
• the above three need cooler temperatures

Question 6

Mycobacterium requiring molecular ID, HIV disseminated MAC that doesn’t grow

Answer 6

M. genavense

Question 7

Which NTM is usually a contaminant?

Answer 7

M. gordonae

Question 8

Which NTM cross react with IGRA?

Answer 8

• think MaSK
• M. marinum
• M. szulgai
• M. kansasii

Question 9

Which NTM is usually associated with aspiration pneumonia and is not a true infection?

Answer 9

M. fortuitum
- if clear cause of aspiration may not need antibiotic therapy or only short course

Question 10

Which NTM is associated with corneal disease?

Answer 10

M chelonae

Question 11

Which NTM is associated with line infection?

Answer 11

M. mucogeicum

Question 12

Which NTMs are associated with HIV?

Answer 12

• MAC
• M. kansasii
• M. genavense (treat like MAC until susceptibility returns)
• M. haemophilum

Question 13

two types of MAC pulmonary dz

Answer 13

1) older male, smoker, COPD, cavitary, rapidly progressive, fibronodular, more readily treatable
2) lady windermere, scoliosis, hypomastia, bronchiolitis, slowly progressive, harder to treat, usually suppressive

Question 14

only NTM that responds to TB drugs

Answer 14

M. kansasii

Question 15

MAC complex spp

Answer 15

• M. boletti
• M. massiliense
• M. abscessus

Question 16

Which two MAC subspecies have inducible macrolide resistance? erm(41) gene

Answer 16

• M. boletti
• M. abscessus

Question 17

Most common NTM causing post plastic surgery infections?

Answer 17

• M. chelonae
• M. fortuitum
• M. abscessus

Question 18

Which NTM is associated with nail salons?

Answer 18

• M. fortuitum

Question 19

NTM associated with tattoo?

Answer 19

M. chelonae
- from manufacture or from cutting with tap water (often to obtain grey color)

Question 20

HIV and MAC - when to start HAART?

Answer 20

start ART usually 2-3 weeks after MAC therapy started

Question 21

what drug is thought to increase mortality in HIV pts with NTM?

Answer 21

clofazimine

Question 22

NTM in HIV

Answer 22

usually disseminated MAC with GI route of infection

Question 23

most common NTM in cancer pts

Answer 23

M. chelonae

Question 24

M. leprae

Answer 24

• does not grow in culture
• see it on stain
  -most humans resistant

Question 25

PZA is useful for with NTM?

Answer 25

None of them!

Question 26

what percentage of MAC pulm cases have abscessus as well?

Answer 26

10-12%

Question 27

Organisms whose growth is stimulated by iron

Answer 27

- vibrio vulnificus - E coli - Listeria moncytogenes - Aeromonas hydrophilia - Rhizopus - Yesrsinia enterocolitica

Question 28

6 pathogens from cat bites

Answer 28

- rabies - Pasteurella spp - anaerobes (fusobacteria) - Bartonella henselae - S. aureus - Strep spp

Question 29

Eikenella corrodens

Answer 29

- anaerobic small gram neg bacillus - Resistant to ceph, clinda, metro, erythro

Question 30

Aeromonas

Answer 30

- aerobic gram neg bacilli - GI and wound infections - Resistant to pen, amp, cefazolin

Question 31

Erysipelas

Answer 31

- acute onset, painful, rapid progression - strep gps A, B, C,G - predisposition venous stasis, lymphatic disruption

Question 32

Erysipelothrix rhusiopathiae

Answer 32

- exposure to swine or fish - severe throbbing pain - subacute erysipelas (erysipeloid) - txt pen, ceph, clinda, FQP

Question 33

Pastia's lines

Answer 33

seen with scarlet fever and sandpaper rash, red lines in axilla and inguinal fold