Chapter 2 (Based on Erin's SI Notes)

Question 1

Folliculitis, Carbuncles

Answer 1

Staph aureus
Pseduomonas aeruginosa “hot tob buns”
*outpatient

Question 2

Impetigo

Answer 2

Staph aureus (almost always)
Strep pyogenes
*outpatient

Question 3

DEIs/Pressure sores

Answer 3

Staph aureus
strep pyogenes
Pseudomonas aeruginosa
Strep agalactiae (with DEIs)

Question 4

Human bite wounds

Answer 4

Eikenella corrodens
Staph aureus
Strep
Less likely:
Bacteroides fragilis
Corynebacterium

Question 5

Osteomyelitis

Answer 5

Staph
Strep
Enterbacteriaceae

Question 6

Osteomyelitis with DEI

Answer 6

Everything (G+, GNB, anaerobes)

Question 7

Osteomyelitis with IV drug abuse and puncture wounds

Answer 7

Pseudomonas aeruginosa
Staph
Sometimes:
Serratia marcescens
Some GNB

Question 8

Osteomyelitis in immunocompromised

Answer 8

Aspergillosis

Candida

Question 9

Septic arthritis

Answer 9

Neisseria gonorrhoeae
Staph aureus
Strep
Pseudomonas

Question 10

Erysipelas, St Anthony’s, Lymphangitis, Cellulitis

Answer 10

Strep pyogenes
Staph aureus
*outpatient
**cellulitis is almost always s. pyogenes

Question 11

Myonecrosis (gangrene)

Answer 11

Clostridium prefringens

*inpatient

Question 12

Necrotizing Fasciitis I

Answer 12

Bacteroides
Strep pyogenes
Vibrio
*inpatient

Question 13

Necrotizing Fasciitis II

Answer 13

Strep pyogenes (flesh eating)
*inpatient

Question 14

Burn wounds

Answer 14

Psedumonas aeruginosa
Enterobacteriaceae
Staph aureus
Strep

Question 15

Animal Bite wounds

Answer 15

Pasturella multocida
Staph aureus
Strep
Bacteroides fragilis (maybe)

Question 16

Osteomyelitis with implanted foreign bodies

Answer 16

Staph epidermidis
Staph aureus
Strep
Enterococci
Enterobacteriaceae
Pseudomonas aeruginosa

Question 17

Osteomyelitis with bite wounds

Answer 17

Pasturella multocida

E. corrodens

Question 18

Osteomyelitis in patients with TB (Pott’s Disease)

Answer 18

Mycobacterium tuberculosis

Question 19

Osteomyelitis in patients with Sickle Cell Anemia

Answer 19

Salmonella

Question 20

Otitis Media, Pharyngitis

Answer 20

#1=viral!
Then:
Strep pneumoniae
Haemophilus influenza
M. catarrhalis
Possible:
Strep pyogenes
Staph aureus
E coli
Pseudomonas
mycoplasma
C. pneumonia
C. diphterieae

Question 21

Epiglottitis

Answer 21

Almost always bacterial
Haemophilus influenzae
*medical emergency

Question 22

Laryngitis (croup)

Answer 22

Usually viral:
Parainfluenza or RSV
Maybe bacterial:
staph
strep
H. influenzae
M. catarrhalis

Question 23

Community acquired pneumonia (CAP)

Answer 23

MSSA/MRSA
Anaerobes
Legionella
GNB
Pseudomonas aeruginosa
Viruses: 
influenza
RSV

Question 24

Hospital Acquired Pneumonia (HAP)

Answer 24

GNB (Klebsiella in alcoholics)
Pseudomonas aeruginosa
Staph aureus
Legionella
Anaerobes
Stenotrophomonas maltophilia
Acinetobacter

Question 25

Pneumonia in Immunocompromised

Answer 25

``` Fungi: Aspergillus Blastomycosis Histoplasmosis Cryptococcus Candida albicans Parasites: PCP Toxoplasma Cryptosporidia Strongyloides ```

Question 26

Encephalitis

Answer 26

``` usually caused by virus (s/s: somnolence, seizures, focal findings, weak limbs) Herpes (main cause) Sometimes fungal Maybe Listeria ```

Question 27

Shunt Infections

Answer 27

``` MRSA/MSSA MRSE Strep Enterococci Neisseria meningitidis Haemophilus influenza GNB ```

Question 28

Sinusitis

Answer 28

Big 3 Bacteria Viruses=#4 some strep pyogenes, staph aureus, maybe anaerobes

Question 29

Acute Bronchitis

Answer 29

usually viral | If bacterial, caused by big 5 bugs (mycoplasma and chlamydia, then big 3)

Question 30

Chronic bronchitis

Answer 30

``` Big 3 Neisseria meningitidis Klebsiella Serratia Pseudomonas ```

Question 31

Aspiration pneumonia

Answer 31

Peptostreptococcus | Prevotella

Question 32

Meningitis

Answer 32

``` s/s: fever, HA, stiff neck, photophobia, abnormal CSF (presence of glucose, protein and PMNs in lumbar puncture) Usually caused by bacteria S. pneumonia Strep agalactiae Staph (MSSA/MRSA) Neisseria meningitidis Haemophilus influenza Listeria monocytogenes E. coli Pseudomonas M. catarrhalis ```

Question 33

Brain abcess

Answer 33

``` Usually bacteria MSSA/MRSA Strep pneumonia Haemophilus influenzae GNB Pseudomonas Bacteroides fragilis ```

Question 34

Venous Sinus Thrombosis

Answer 34

``` MSSA/MRSA MRSE Haemophilus influenzae GNB Anaerobes ```

Question 35

Native Valve Endocarditis

Answer 35

Almost always Gram+ cocci Strep Viridans S. bovis

Question 36

Prosthetic valve endocarditis

Answer 36

MRSE MSSA/MRSA GNB

Question 37

GNB Endocarditis

Answer 37

Really rare | enterobacteriaceae or pseudomonas

Question 38

Primary peritonitis

Answer 38

E. coli Klebsiella (alcoholism) Streptococci

Question 39

Peptic Ulcer Disease

Answer 39

Helicobacter pylori

Question 40

Acute cystitis (bladder)

Answer 40

E. coli (90%) Staph saprophyticus UTI: ureaplasma urealyticum

Question 41

Catheter-Associated UTI

Answer 41

``` MRSE MSSA/MRSA Enterococcus E. coli Proteus mirabilis Pseudomonas Stenotrophomonas Enterobacteriaceae Serratia Candida ```

Question 42

Prostatitis Acute, Cervicitis, PID, Urethritis

Answer 42

Neisseria gonorrhea Chlamydia (OIP=hard to treat) Maybe GNB, trichomonas, ureaplasma/mycoplasma

Question 43

Herpes

Answer 43

HSV1-mouth | HSV2-genital

Question 44

Lymphogranuloma venereum

Answer 44

Chlamydia

Question 45

Gonorrhea

Answer 45

Neisseria gonorrhea

Question 46

Vaginosis/Vaginalis (non-STD)

Answer 46

``` G. vaginalis Bacteroides Peptostreptococcus Mycoplasma hominis Candida Trichomonas vaginalis ```

Question 47

Clean surgeries (heart, ortho, neuro, eye, vascular, head, neck, breast)

Answer 47

Staph | Strep

Question 48

IV drug user endocarditis

Answer 48

MSSA/MRSA

Question 49

Enterococcal endocarditis

Answer 49

E. faecalis (nosocomial)

Question 50

Fungal endocarditis

Answer 50

Candida | Aspergillus

Question 51

GI infections (biliary tract, gallbladder, etc)

Answer 51

Enterbacteriaceae Enterococci Anaerobes

Question 52

Community pyelonephritis

Answer 52

E. coli Proteus mirabilis Enterobacteriaceae

Question 53

Hospital pyelonephritis

Answer 53

``` E. coli Enterobacteriaceae Pseudomonas Stenotrophomonas maltophilia Enterococcus ```

Question 54

Chronic prostatitis

Answer 54

Enterobacteriaceae Pseudomonas Enterococcus

Question 55

Chancroid

Answer 55

H. ducreyi

Question 56

Syphilis

Answer 56

Treponema pallidum

Question 57

Epididymitis

Answer 57

Neisseria gonorrhea C. trachomatis E. coli

Question 58

Genital warts

Answer 58

HPV (viral, vaccine)

Question 59

Dirty Surgery (GI, GU)

Answer 59

Enterbacteriaceae Enterococci Anaerobes *must cover all three

Question 60

Eye infections

Answer 60

``` Herpes simplex Adenovirus Cytomegalovirus Staph aureus Neisseria Chlamydia ```