Qbank 2016 Flashcards Preview

Dr. Mel - Microbiology > Qbank 2016 > Flashcards

Flashcards in Qbank 2016 Deck (15):
1

2 bacteria causing food poisoning via preformed heat-stable exotoxin

Staphylococcus aureus
Bacillus cereus

2

3 diseases caused by exotoxin of Staph aureus

Toxic shock syndrome
Staphylococcal scalded syndrome
Gastoenteritis

3

4 bacteria that cause diarrhea with a small inoculum (low ID50)

Shigella
Campylobacter jejuni
Entamoeba histolytica
Giardia lamblia

4

4 bacteria with high ID50

Salmonella
Vibrio
Clostridium perfringens
Escherichia coli

5

2 bacteria causing nonbullous impetigo

Staph aureus
Strepto pyogenes (beta hemolytic group A)

6

2 complications after Strepto pyogenes skin infection and pharyngeal infection

Poststreptococcal glomerulonephritis (skin - pharyngeal)
Acute rheumatic fever (pharyngeal)

7

5 triggers for Candida vaginitis

Antibiotic use
High estrogen levels (pregnancy)
Systemic corticosteroid therapy
Uncontrolled diabetes mellitus
Any cause of immunosuppression

8

4 causes of genital ulcers

Syphilis (Treponema pallidum)
Genital herpes (HSV)
Chancroid (Haemophilus ducreyi)
Granuloma inguinale (Klebsiella granulomatis)

9

3 toxins with superantigen activity

Enterotoxins
Exfoliative toxins
Toxic Shock Syndrome Toxin

10

4 symptoms of Dengue fever and 4 symptoms of Chikungunya (both transmitted by Aedes aegypti mosquitoes)

Dengue fever: acute fever, headache, retro-orbital pain, joint and muscle pain.

Chikungunya: fever, flulike symptoms, polyarthralgias, diffuse macular rash.

11

2 diseases transmitted by Ixodes tick

Babesiosis (Babesia microti)
Lyme disease (Borrelia burgdorferi)

12

1 AB that can cause disulfiram-like reaction after ethanol consumption

Metronidazole

13

5 treatments for Plasmodium

Chloroquine (for sensitive species)
Mefloquine (for chloroquine-resistant species)
Atovaquone-proguanil
Artemisinins
+ Primaquine (associated to one of the others if P.vivax or P.ovale)

14

3 symptoms of Waterhouse-Friderichsen

Adrenal gland destruction
Disseminated Intravascular Coagulation
Shock

15

3 agents that affect acetylcholine receptors + mecanisms

Muscarinic antagonists inhibit postsynaptic action of ACh
Botulinum neurotoxin blocks presynaptic exocytosis of ACh vesicles
Organophosphates prevent ACh degradation