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Gram Negative Flashcards

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1
Q

Most common cause of community acquired UTI

A

E. Coli

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2
Q

Natural host of N. Meningitidis

A

Human

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3
Q

Most common cause of meningitis among aged 2-18 y.o

A

N. Meningitidis

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4
Q

Polysaccharides strains of meningococcal vaccine

A

A, C, Y, W-135

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5
Q

Damages cilia and mucosal cells in the patho of P. aeruginosa infection

A

Procyanin

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6
Q

Oxidase positive on Thayer Martin agar?

Composition of Thayer Martin agar

A

N. Gonorrhoeae

Vancomycin
Colistin
Nystatin

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7
Q

Most common cause of septic arthritis in sexually active adults

A

N. Gonorrhoeae

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8
Q

Treatment for N. Gonorrhoeae infection

A

Ceftriaxone + doxycycline

Ceftriaxone + azithromycin if pregnant

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9
Q

Stain to visualize L. Pneumophila

A

Silver stain

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10
Q

EHEC

A

E. Coli 0157:H7

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11
Q

Most common cause of bacterial epiglottitis

A

H. Influenzae

DOC: Ceftriaxone

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12
Q

Test that detects Salmonella Ab in patients serum

A

Widal test

Cultured in xylose lysine deoxycholate medium

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13
Q

Salmonella type that cause enterocolitis

A

S. Enteritidis

S. Typhimurium

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14
Q

Salmonella type that causes septicemia

A

S. Choleraesius

Common in patients with sickle cell anemia

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15
Q

Most common cause of urethritis and PID

A

N. Gonorrhoeae

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16
Q

Causes most severe form of bacillary dysentery

A

Shigella dysenteriae/ type 1 Shiga bacillus

Most common cause of epidemic dysentery

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17
Q

Most common cause of bacterial gastroenteritis

A

Campylobacter jejuni

Invades mucosa of colon but doesn’t penetrate

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18
Q

Most sever form of meningococcemia caused by N. Meninigitidis

A

Waterhouse-Friderichsen syndrome

bilateral hemorrhagic destruction of the adrenal glands

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19
Q

Most important virulence factor of M. Tuberculosis

Action?

A

Cord factor

Prevents leukocyte migration

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20
Q

DOC for uncomplicated gonorrhoeae

A

Cefixime

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20
Q

Salmonella type that cause typhoid fever

A

S. Typhi

DOC: ampicillin

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21
Q

Most commone cause of pneumonia in alcoholics

Study These Flashcards
A

Klebsiella pneumoniae

Necrotizing pneumonia

22
Q

Treatment for this facultative gram negative rod.
No lactose fermentingg
Urease positive
Swarming motility

Study These Flashcards
A

TMP-SMX
Ampicillin

P. Mirabilis

23
Q

Gram negative diplococci that ferments maltose and glucose

Study These Flashcards
A

N. Meningitidis

24
Most common cause of bacillary dysentery
Shigella sonnei/ Duval's bacillus
25
Chemical responsible for grape like odor of P. Aeruginosa
Acetoaminophenone
26
Antibiotics associated with H. Pylori eradication
Metronidazole Tetracycline Clarithromycin Amoxicillin
28
Most common cause of otitis externa
P. Aeruginosa
29
Treatment for most virulent bacteria
Streptomycin and Tertracycline MO: Yersinia Pestis
31
3rd most common cause of nosocomial UTI
P. Aeruginosa
32
Radiologically detectable calcification in primary complex in M. Tuberculosis infection
Rankes complex
33
Treatment for tuberculoid leprosy
Dapsone and rifampicin
34
Treatement for lepromatous leprosy
Dapson, rifampicin and clofazime
35
Give descriptive properties of M. Pneumoniae
Smallest free living MO Not seen in GS Only bacteria with cholesterol in cell membrane Eatons medium
36
Most common type of atypical pneumonia
M. Pneumoniae DOC: erythromycin or azithromycin
37
MO that cannot be culture in vitro
M. Leprae | T. Pallidum
38
Hutchinson triad
Hutchinson teeth Deafness Keratitis
39
Most impt dx test for primary syphilis
Dark field microscopy
40
Confirmatory teat for secondary syphilis
Fluorescent Treponemal Antobody-Absorption (FTA-ABS)
41
Largest medically important bacteria
Borrelia Burgdorferi
42
Stages of Lyme disease
Stage1: erythrma chronicum migrans Stage2: myocarditis, meningitis, bells palsy Stage3: autoimmune migratory polyarthritis (onion skin lesion), actodermatitis chronica atrophicans
43
DOC for Lyme disease
Doxycycline
44
Leptospira interrogans grown in
Ellinghausarn-McCullough-Johnson-Harris medium or Fletchers medium
45
Gold standar for L. interrogans detection
Leptospire microscopic agglutination test
46
Predominant anaerobe of human colon
B. Fragilis DOC: metronidazole
47
Treatment for Brucella Abortus infection
Doxycycline plus Rifampicin
48
Most severe form of leptospirosis
Weils syndrome Triad of jaundice, bleeding and uremia
49
Most common cause of STD overall
Chlamydia trachomatis
50
Trachoma
Caused by C. trachomatis type A-C Halberstadter Prowazek inclusions
51
C. Trachomatis type that cause genital tract infection
Type D-K
52
Major membrane sterol of fungi
Ergosterol
53
Spaghetti and meatball appearance on 10% KOH
Malassezia furfur causing Tinea Versicolor Miconazole
54
Transmission of Coccidioides Immitis
Inhalation of arthrospores

Microbiology (5 decks)

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