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[h] Microbiology & Antimicrobials Flashcards

[i] Master this session in just 5 minutes.

[q] …….. is Gram-positive cocci in clusters, Catalase positive, Coagulase-positive, ferments mannitol on mannitol salt agar and forms golden yellow colonies on blood agar surrounded with a zone of β-hemolysis.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoeWxvY29jY3VzIGF1cmV1cy4=

[q] ……… is an important adhesion expressed by S. aureus. It leads to attachment of the organism to traumatized tissue and blood clots

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFRoZSBjbHVtYmluZyBmYWN0b3IgKGZpYnJpbm9nZW4tYmluZGluZyBwcm90ZWluKS4=[Qq]

[q] …….. binds with the Fc portion of lgG antibodies at the complement-binding site, preventing complement activation. This results in decreased production of C3b, leading to impaired opsonization and phagocytosis.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFByb3RlaW4gQS4=

[q] …….. interact with major histocompatibility complex molecules on antigen presenting cells and the variable region of the T lymphocyte receptor to cause a nonspecific polyclonal widespread activation of T lymphocytes.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN1cGVyYW50aWdlbi4=

[q] What is the most likely diagnosis?

26 years old patient presenting with nausea, vomiting and abdominal cramps after 3 hours of eating mayonnaise-containing food (macaroni salad)?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoeWxvY29jY2FsIGZvb2QgcG9pc29uaW5nLg==[Qq]

[q] …………. is capable of producing a highly heat-stable protein toxin called enterotoxin that causes a syndrome characterized by nausea, vomiting and abdominal cramps following ingestion of preformed exotoxin (exotoxin formed prior to ingestion).

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoeWxvY29jY3VzIGF1cmV1cy4=[Qq]

[q] What is the most likely diagnosis?

26 years old female presenting with Fever, vomiting, diarrhea, muscle pain and erythroderma, and hypotension + she admits using vaginal tampons that are left in place for extended period?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFRveGljIHNob2NrIHN5bmRyb21lIChUU1MpLiBUU1NUIGFjdHMgYXMgYSBzdXBlcmFudGlnZW4u[Qq]

[q] What is the most likely diagnosis?

4 years old child presenting with moist, red, scalded skin + – Nikolsky’s sign (skin slipping off with gentle pressure), epidermal necrolysis, fever and pain associated with the skin rash?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoeWxvY29jY2FsIHNjYWxkZWQgc2tpbiBzeW5kcm9tZSAoU1NTUyku

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[Qq]

[q] Staphylococcal Scalded Skin Syndrome (SSSS) is caused by certain strains of Staphylococcus species that produce the ……?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IEV4Zm9saWF0aW4gZXhvdG94aW4u[Qq]

[q] …….. is the most common cause of tricuspid endocarditis in intravenous drug users.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFMuIGF1cmV1cy4=[Qq]

[q] …….. is Gram-positive cocci, Catalase positive, Coagulase negative, Novobiocin sensitive and does not ferment mannitol.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoIGVwaWRlcm1pZGlzLg==[Qq]

[q] What is the most likely Cause?

9 month age child presenting with symptoms of meningeal irritation after insertion of ventriculoperitoneal shunt for treatment of congenital hydrocephalus?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoIGVwaWRlcm1pZGlzLg==[Qq]

[q] After attachment of  the Staph epidermidis to the implanted foreign bodies, bacteria multiply and communicate with one another to induce synthesis of ………. that encases the bacteria.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IGV4dHJhY2VsbHVsYXIgcG9seXNhY2NoYXJpZGUgbWF0cml4IChiaW9maWxtKS4=[Qq]

[q] S. epidermidis are frequently resistant to methicillin; therefore, ……… is recommended for therapy of serious infections caused by methicillin-resistant strains.

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IHZhbmNvbXljaW4sIGNvbWJpbmVkIHdpdGggcmlmYW1waW4gb3IgZ2VudGFtaWNpbiBvciBib3RoLg==[Qq]

[q] What is the most likely Cause?

Sexually active young female presenting with urgency, frequency, hesitancy + urine culture shows Catalase positive, Coagulase negative, and Novobiocin resistant microorganism?

[c]IFNob3cgbWUgdG hlIGFuc3dlcg==[Qq]

[f]IFN0YXBoeWxvY29jY3VzIHNhcHJvcGh5dGljdXMu[Qq]

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