Micro COPY Flashcards
Virus that resides in pharynx and GIT
Polio Virus 1:100 encephalitis, 1:1000 destruction of motor neurons
Neutralizing antibodies are formed against this
gp120. Think GP (as being neutral)
Non-neutralizing antibodies are formed against this.
Answer – p24!!!Think HIV Test
Conformational change of HIV
gp41 can only penatrate the cells where there was conformational change of CD4+
enzyme that copies with errors
reverse transcriptase
The natural chemokine able to inhibit HIV fusion to CD4 cells
MIP-1 alpha
Syphilis Mx
Benzyl penicillin
Gonorrhoea Mx
cephalosporins: Ceftraixone or Cefexime
Trichomonas Mx
Metronidazole
Painless indurated ulcer, grown on dark brown medium, spiral shaped organism found.
Treponema Palladium
Condylomata Acumina strains
6 and 11 are causative
Lady with discharge, no other symptoms, and causative infection found on wet slide microscopy.
Trichomonas
. Guy with urethral discharge. Partner has itchy vaginaand THIN white discharge. >5 Polymorphs on microscopy
Gonorrhea
Gonorrhoea Mx
ceftriaxone 500 mg IM + azithromycin 1 g oral as a single dose. The azithromycin is thought to act synergistically with ceftriaxone and is also useful for eradicating any co-existent Chlamydia infections. This combination can be used in pregnant women as well
Molluscum contagiosum. What is the causative organism?
Pox Virus
Haemorrhagic cystitis post-transplant:
BK virus
Post-transplant lymphoproliferative disease:
EBV
Nigeria, rats, haemorrhagic, arenaviridae
Lassa fever
Arbovirus, America, mosquitoes, polio-like
West Nile
Smoking, COPD, gram negative coccobacilli
H.influenza
CAP: moderate to severe
clari + one of co-amoxiclav or cefuroxime
CAP atypical
Atypical - macrolide or tetracycline
Man goes to wedding in Devon, comes back with pneumonia + confusion (hyponatraemia)
Legionella
Transplant patient on immunosuppressives (post-transplkant) has pneumonia - halo sign (multiple) on Xray or cavitatiting lesion
Aspergillums
cold autoimmune haemolytic anaemia (cold agglutinin test!!!!!)
Mycoplasma pneumoniae
Abdo pain and fever + CONSTIPATION but no diarrhoea
Sallmonella
Sallmonella Mx
Ceftriaxone or ciprofloxacin
Food poisoning +/- bloody diarrhoea, affects distal colon
Shigella
the commonest cause of bloody diarrhoea, headache, abdominal pain, drinking unpasteurized milk associated severe cramps per umbilical abdominal pain and fever; drinking unpasteurised milk (hedache_fever +bloody + foul smelling diarrhoea)
campylobacter
Giardia
ELIZA
○ Peyer’s patches, gram negative non lactose fermenter, necrotising granulomas
○ Complications: Reactive arthritis, erythema nodosum, enterocolitis
● Gram negative, coccobacilli
● Typically produces a protracted terminal ileitis that may mimic Crohns disease
Yeresnia
A 26 year old presents with abdominal pain, watery diarrohoea, three days after eating undercooked meat
Cryptospioris
Cryptospioris diagnosis
Diagnosis stool: modified Ziehl-Neelsen stain stool ova and parasites: positive
Listeria diagnostic test
stool culture: rarely positive, blood and CSF culture: positive
Pseudomonas ABx
Ceftazidime
(below the diaphragm) - Gram negatives
Ciprofloxacin
MRSA, 3rd episode of
Vancomycin + taicoplanin,
meningitis prophylaxis in contacts:
oral ciprofloxacin
Patient on ITU develops sepsis – gram (+) cocci in chains MacConkey plate Enterococcus gram (+) cocci in chains aesculin positive (Vancomycin/Teicoplanin Resistant?)
Linezolid
super resistant, grow on McKoney agar plate.
Enteroccus – gram (+) cocci –
Strep sore throat treatment in kid
Phenoxymethylpenicillin
Broad spec, no pseudomonal activity usually given with a beta lactamase inhibitor
Augmentin=Co-amoxiclav
A glycopeptide used to treat MRSA C diff or not tolerating/responding to metronidazole
Vancomycin + teicoplanin
A DNA synthesis inhibitor used to treat Pseudomonas infections but bad against anaerobes
Gentamycin
HAP Within 5 days of admission:
co-amoxiclav or cefuroxime
Hospital-acquired pneumonia more than 5 days
piperacillin with tazobactam
OR a broad-spectrum cephalosporin (e.g. ceftazidime)
OR a quinolone (e.g. ciprofloxacin)
Abx of the Macrolide/lincosamide/streptogrammin group used to treat some atypical pneumonias
clarithomycin
Burn victims gramm (-) green pigment oxidase positive:
Pseudomonas
Trauma, open wound, gas gangrene
Clostridium perfringens
Mum with skin infection, son has sore throat
Strep pyogenes
Child with red rash oedematous, first on face and crosses nasal bridge and spreads quickly
erysipelas
34 year old farmer cuts his leg whilst working. 3 days later he presents to A&E with a grossly oedematous leg that is discoloured with multiple necrotic bullae:
necrotising facilities, streptococus pyogenes