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USMLE Systems Based Microbiology

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camikuvu's version from 2017-01-23 19:34

Systems Based

Type of InfectionDetailsDetail MnemonicOrganismOrganism Mnemonic
Normal dormant floraSkin1Staphylococcus epidermidis1
Normal dormant floraNose1Staphylococcus epidermidis/colonization by aureus2
Normal dormant floraOropharynx1Viridians streptococci1
Normal dormant floraDental plaque1Streptococcus mutans1
Normal dormant floraColon1Bacterioides fragilis>E coli2
Normal dormant floraVagina1Lactobacillus/colonized by E coli/GBS3
Food poisoningStarts/ends quickly1S aureus/B cereus2
Food poisoningContaminated seafood1Vibrio parahaemolyticus/vulnificus2
Food poisoningReheated rice1B cereus1 (from reheated rice? Be serious)
Food poisoningMeats/mayonnaise/custard/preformed toxin4S aureus1
Food poisoningReheated meat dishes1Clostridium perfringens1
Food poisoningImproperly canned fods1Clostridium botulinum1
Food poisoningUndercooked meat1Enterohemorrhagic E coli O157/H71
Food poisoningPoultry/meat/eggs3Salmonella1
Mimic appendicitisMesenteric adenitis1Yersinia enterocolitica1
Mimic appendicitisMimic appendicitis1Nontyphoidal salmonella1
Mimic appendicitisMimic appendicitis1Campylobacter jejuni1
Bloody diarrheaComma/S shaped orgs/growth at 42deg C3Campylobacter1
Bloody diarrheaLactose negative/flagellar motility/Poultry/meat/eggs5Salmonella1
Bloody diarrheaLactose negative/low ID50/Shiga toxin3Shigella1
Bloody diarrheaHUS/Shiga like toxin2Enterohemorrhagic E coli O157/H71
Bloody diarrheaInvades colonic mucosa1Enteroinvasive E coli1
Bloody diarrheaDaycare outbreaks/pseudoappendicitis2Yersinia enterocolitica1
Bloody diarrheaProtozoan1Entamoeba histolytica1
Bloody diarrheaPseudomembranous colitis/also bloody2Clostridium difficile1
Watery diarrheaTraveler's diarrhea/ST/LT toxins2Enterotoxigenic E coli1
Watery diarrheaComma shaped organisms/rice water diarrhea2Vibrio cholerae1
Watery diarrheaPseudomembranous colitis/also bloody2Clostridium difficile1
Watery diarrheaWatery diarrhea/gas gangrene2Clostridium perfringens1
Watery diarrheaProtozoa1Giardia/Cryptosporidium2
Watery diarrheaViruses1Rotavirus/norovirus2
MiscBronchitis in smokers1H influenzae/Legionella pneumophila/Moraxella catarrhalis3
PneumoniaNeonates<4 weeks1GBS/E coli2
PneumoniaChildren 4w-18y1RSV/Mycoplasma/Chlamydia trachomatis/Chlamydia pneumoniae/Streptococcus pneumoniae5 Runts May Cough Chunky Sputum
PneumoniaAdults 18-40y1Mycoplasma/C pneumoniae/S pneumoniae3
PneumoniaAdults 40-65y1S pneumoniae/H influenzae/anaerobes/viruses/Mycoplasma5
PneumoniaElderly1S pneumoniae/H inflenzae/Influenza virus/Anaerobes/Gram- rods5
PneumoniaNosocomial/hospital acquired1Staphylococcus/enteric gram- rods2
PneumoniaImmunocompromised1Staphylococcus/enteric gram- rods/fungi/viruses/Pneumocystis jerovicii (PJP)5
PneumoniaAspiration1Anaerobes1
PneumoniaEtOH/IVDA2S pneumoniae/Klebsiella/Staphylococcus3
PneumoniaCystic Fibrosis1Psuedomonas/S aureus/S pneumoniae3
PneumoniaPostviral1Staphylococcus/H influenzae/S pneumoniae3
PneumoniaAtypical1Mycoplasma/Legionella/Chlamydia (all pneumoniae)3
MeningitisNewborn 0-6 months1GBS/E coli/Listeria3
MeningitisChildren 6m-6y1S pneumoniae/H influenzae type B/N meningitidis/Enteroviruses4 SHiN+1
Meningitis6-60y1S pneumoniae/N meningitidis/Enteroviruses/HSV4 (2 bacterial/2 viral)
Meningitis60y+1S pneumoniae/Gram- rods/Listeria3
OsteomyelitisAssumed/if no other info available1S aureus1
OsteomyelitisSexually active1N gonorrhea1
OsteomyelitisDiabetic1Psuedomonas aeruginosa/Serratia2
OsteomyelitisIVDA1Psuedomonas aeruginosa/Serratia2
OsteomyelitisSickle cell1Salmonella1
OsteomyelitisProsthetic equipment1S aureus/epidermidis2
OsteomyelitisVertebral disease1M tuberculosis/Pott's Disease2 (scientific and common names)
OsteomyelitisCat/dog bite/scratch1Pasteurella multocida1
UTI1st leading cause/green metallic sheen on EMB agar2E coli1
UTI2nd leading cause1Staphylococcus saprophyticus1
UTI3rd leading cause/large mucoid capsule/viscous colonies3Klebsiella pneumoniae1
UTISome produce red pigment/often nosocomial/drug resistant3Serratia marcescens1
UTIOften nosocomial/drug resistant2Enterobacter cloacae1
UTIMotility causes swarming on agar/urease/struvite stones3Proteus mirabilis1
UTIBlue pigment/fruity odor/usually nosocomial/drug resistant4Pseudomonas aeruginosa1
UTIPositive leukocyte esterase1Bacterial1
UTIPositive nitrite test1Gram negative1
UTIPositive urease test1Urease producing (Proteus/Klebsiella)2
UTINegative urease test1E coli/Enterococcus2
RashBegins at head/moves down/fine trunkal rash/postauricular lymphadenopathy3Rubella1
RashBegins at head/moves down/preceeded by CCC and K2Measles1
RashVesicular rash begins on trunk/spreads to face/extremities/different age of lesions3VZV/chickenpox2 (scientific and common names)
RashMacular rash/over body/post several days of fever/febrile seizures/usually infants3HHV6/Roseola2 (scientific and common names)
RashSlapped cheek rash/hydrops fetalis2Parvovirus B19/Erythema infectiosum2 (scientific and common names)
RashErythematous sandpaper rash/fever/sore throat3S pyogenes/Scarlet fever2 (scientific and common names)
RashVesicular rash on palms and soles/ulcers on oral mucosa2Coxsackievirus A/Hand Foot and Mouth Disease2 (scientific and common names)
STDUrethritis/cervicitis/PID/prostatitis/epididymitis/arthritis/creamy purulent discharge7N gonorrhea1
STDPainless chancre1Primary syphilis1
STDFever/lymphadenopathy/skin rashes/condylomata lata4Secondary syphilis1
STDGummas/tabes dorsalis/general paresis/aortitis/Argyll Robertson pupil5Tertiary syphilis1
STDPainful genital ulcer/inguinal adenopathy2Chancroid/Haemophilus ducreyi2 (scientific and common names)
STDPainful penile/vulvular/cervical vesicles/ulcers/systemic fever/headache/myalgia4Genital herpes (HSV2>1)2
STDUrethritis/cervicitis/conjunctivitis/Reiter's/PID5Chlamydia trachomatis D-K1
STDInfection of lymphatics/genital ulcers/lymphadenopathy/rectal strictures4Lymphogranuloma venereum/Chlamydia trachomatis L1-32 (scientific and common names)
STDVaginitis/strawberry colored mucosa/motile on wet prep3Trichomoniasis/Trichomonas vaginalis2 (scientific and common names)
STDOpportunistic infections/Kaposi's sarcoma/lymphoma3AIDS/HIV1
STDGenital warts/koilocytes2Condylomata acuminata (HPV6/11)3 (scientific and common names)
STDJaundice1HBV1
STDNoninflammatory/malodorous discharge/positive whiff test/clue cells/not exclusively STD5Bacterial vaginosis/Gardnerella vaginalis2 (scientific and common names)
NosocomialNewborn nursery1CMV/RSV2
NosocomialUrinary catheterization1E coli/Proteus mirabilis2
NosocomialRespiratory therapy equipment1Pseudomonas aeruginosa1
NosocomialWork in renal dialysis unit1HBV1
NosocomialHyperalimentation1Candida albicans1
NosocomialWater aerosols1Legionella1
Unimmunized childrenRash begins at head/moves down/fine trunkal rash/postauricular lymphadenopathy3Rubella1
Unimmunized childrenRash begins at head/moves down/preceeded by CCC and K2Measles1
Unimmunized childrenMeningitis/microbe colonizes nasopharynx2H influenzae type B1
Unimmunized childrenMeningitis/myalgia/paralysis3Poliovirus1
Unimmunized childrenPharyngitis/grayish oropharyngial exudate (pseudomembranes)/painful throat3Cornybacterium diptheriae1
Unimmunized childrenFever/dysphagia/drooling/difficulty breathing due to cherry red epiglottis4H influenzae type B1
All else failsPus/empyema/abscess3S aureus1
All else failsPediatric infection1H influenzae1
All else failsPneumonia in cystic fibrosis1Pseudomonas aeruginosa1
All else failsBurn infection1Pseudomonas aeruginosa1
All else failsBranching rods/oral infection/sulfur granules3Actinomycies israelii1
All else failsTraumatic open wound1Clostridium perfringens1
All else failsSurgical wound1S aureus1
All else failsDog/cat bite1Pasteurella multocida1
All else failsCurrant jelly sputum1Klebsiella1
All else failsPositive PAS stain1Tropheryma whipplei/Whipple's disease2 (scientific and common names)
All else failsSepsis/meningitis in newborn1GBS1
All else failsHealth care provider/needlestick1HBV1
All else failsFungal infection in diabetic/immunocompromised3Mucor/Rhizopus2
All else failsAsplenic patient1Encapsulated (S pneumoniae/H influenzae type B/N meningitidis)4 SHiN+1 category
All else failsChronic granulomatous disease1Catalase positive/especially S aureus 2 category plus most likely
All else failsNeutropenic patient1Candida albicans systemic/Aspergillus2
All else failsFacial nerve palsy1Borrelia burgdorferi/Lyme disease2 (scientific and common names)
MiscOtitis media1S pneumonia/H influenza/Moraxella catarrhalis3
MiscExternal otitis1Pseudomonas aeruginosa1
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Mnemonics

MnemonicWhat ForSpelled Out
These Rascals May Microscopically Lack ColorDon't Stain WellTreponema/Rickettsia/Mycobacteria/Mycoplasma/Legionella pneumophila/Chlamydia
Certain Bugs TRY my PatienceGiems stain/intracellularChlamydia/Borrelia/Rickettsiae/Trypanosomes/Plasmodium
maConKEE'sPink colonies on MacConkey's agarLactose fermenting enterics (Citrobacter/Klebsiella/E coli/Enterobacter/Serratia/etc)
Nagging Pests Must BreathObligate aerobesNocardia/Pseudomonas aeruginosa/Mycobacterium tuberculosis/Bacillus
Can't Breath AirObligate anaerobesClostridium/Bacterioides/Actinomyces
Some Nasty Bugs May Live FacultativeLYFacultative intracellularSalmonella/Neisseria/Brucella/Mycobacterium/Listeria/Francisella/Legionella/Yersinia pestis
SHiNE SKiSEncapsulated bacteriaStreptococcus pneumoniae/H influenzae type B/Neisseria meningitidis/E coli/Salmonella/Klebsiella pneumoniae/group B Strep
PLACESS for your CATsCatalase positivePseudomonas/Listeria/Aspergillus/Candida/E coli/S aureus/Serratia
CHuck norris hates PUNKSSUrease positiveCryptococcus/H pylori/Proteus/Ureaplasma/Nocardia/Klebsiella/S epidermidis/S saphrophyticus
ENDOTOXINEndotoxin factsEdema/NO/DIC/Death/Outer membrane/TNF alpha/O antigen/eXtremely heat stable/IL1/Neutrophil chemotaxis
ABCDEFGC diptheria factsADP ribosylation/Beta phage/Corynebacterium/Diptheriae/Elongation Factor 2/Granules
On the Staph retreat there was NO StRESsSeparate coagulase negative staphNovobiocin/saprophyticus resistant/epidermidis sensitive
OVRPASeparate alpha hemolytic streptococciOptochin/Viridians Resistant/Pneumoniae susceptible
BBRASSeparate beta hemolytic streptococciBacitracin/gBs resitant/gAs susceptible
JONESS pyogenes rheumatic feverJoints/Carditis/Nodules/Erythema marginatum/Sydenham's Chorea
Hot campfireGrows at 42degCCamplyobacter jejuni
macConKEE'SLactose fermentersCitrobacter/Klebsiella/E coli/Enterobacter/Serratia
SSPPhPLactose nonfermentersSalmonella/Shigella/Proteus/Pseudomonas/h Pylori
EEKs FastFast lactose fermentersE coli/Enterobacter/Klebsiella
Slow/C/SSlow lactose fermentersCitrobacter/Serratia
haEMOPhilusHaemophilus presentationEpiglottitis/Meningitis/Otitis externa/Pneumonia
PSEUDOPseudomonas presentationPneumonia/Sepsis/External otitis/UTI/Drug use/Diabetic Osteomyelitis
FAKE a key lime pieLyme disease presentationFacial nerve palsy/Arthritis/Kardiac block/Erythema migrans
no clue why I smell fish in the vagina gardenGardnerallaClue cells/fishy smell/vaginal gardnerella
GAMEAnaplasmosis/EhrlichiosishGA/hME (Human Granulocytic Anaplasmosis/Human Monocytic Ehrlichiosis)
salMONellaSalmonella/ShigellaSalmonella has a monocytic response/shigella has a PMN response
PAPP smears and CPR to naked hippy (Hepe)Naked viral envelopesParvo/Adeno/Papilloma/Polyoma/Calici/Picorna/REO/Hepe
Live/one night only/Small Yellow Chickens get vaccinated with Sabin's and MMR/IncredibleLive attenuated vaccinesSmall pox/yellow fever/VZV chickenpox/Sabin's polio virus/MMR/Influenza (intranasal)
RIP Always/salK KilledKilled vaccineRabies/Influenza (injected)/Salk Polio/HAV vaccines
repeat-o-virusOnly dsRNA RNA virusREOviridae
Retro Toga party/Flavored Corona/Hippy California PicklesRNA+ virusesRetrovirus/Togavirus/Flavivirus/Coronavirus/Hepevirus/Calicivirus/Picornavirus
HHAPPPPyDNA virusesHepadna/Herpes/Adeno/Pox/Parvo/Papilloma/Polyoma
Always Bring Polymerase Or Fail ReplicationRNA- virusesArena/Bunya/Paramyxo/Orthomyxo/Filo/Rhabdo
BOARSegmented virusesAll RNA (Bunya/Orthomyxo/Arena/REO)
PERCH on a peakPicornavirusesPolio/Echo/Rhino/Coxsackie/HAV
SAFeChildren Take Really Good CareWhy to avoid in pregnantSulfonamides/Aminoglycosides/Fluoroquinolones/Clarithromycin/Tetracyclines/Ribavirin/Griseofulvin/Chloramphenicol
buy AT 30/CCEL at 5030S inhibitorsAminoglycosides/Tetracyclines
buy AT 30/CCEL at 5050S inhibitorsChloramphenicol/Clindamycin/Erythromycin (macrolides)/Linezolid
HNPCC (normally hereditary nonpolymposis colorectal cancer)Oxidase positiveHelicobactor pylori/Neisseria/Pseudomonas/Campylobacter/Vibrio cholera
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USMLE Antibiotics