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USMLE
USMLE I - Micro
| Question | Answer |
|---|---|
| Animal exposure + jaundice + renal = | Leptospirosis |
| What is the MC late manifestation of Lyme dz | Joint involvement |
| What is the MC cardiac sequelae of Lyme dz | AV node block |
| What is the MC neurologic sequelae of Lyme dz | 7th CN palsy (Bell’s) |
| What dz is also carried by Ixodes tick and present w/ hemolytic anemia | Babesiosis |
| What dz is also carried by Ixodes tick and presents w/ elevated LFTs, low platelets, low WBCs | Erlichiosis |
| Pt returned from trip abroad and has hemolysis plus GI complaints | malaria |
| What respiratory bug has branching weakly acid fast and gram positive filaments | Nocardia |
| What branching filamentous bacteria affects the respiratory system of immunocompetent pts | Actinomyces |
| Pt went to wet areas of Ohio/Mississippi river valley. Has palate/oral ulcers pancytopenia and splenomegaly. Dx | Histoplasmosis |
| What other respiratory dz does Histoplasmosis mimic | TB |
| Pt came from rural Southeast with pulmonary complaint and bone lesions | Blastomycosis |
| Pt had GU/Gu procedure and now has subacute endocaritis, what organism | E. faecalis |
| Bacterial endocardx in pt w/ colonic malignancy | Strep bovis |
| Endocardx in pt with prosthetic valve | Staph epi |
| Non flagellated protozoa causing DILATED cardiomyopathy | T. cruzi |
| Fever, chest pain, heart failure. Dx and bug | Myocardx / coxsackie |
| Diarrhea post travel | ETEC |
| What actually causes food poisoning | Preformed heat stable toxin of S. aureus |
| What actually causes food poisoning of re-heated rice | Preformed toxin of B. cereus |
| Late onset watery diarrhea from food poisoning | Clostridium PERFRINGENS (spores need to germinate and release toxin) |
| Copious watery diarrhea | V. cholera |
| Blood diarrhea, animal/pet to human transmission | Campylobacter jejuni |
| Raw poultry / eggs / recent abroad travel, fever, ab cramps, BLOODY diarrhea, spots on ab | Salmonella |
| Bloody diarrhea, appendicitis like pain | Yersinia enterolytica |
| Invades mesenteric veins and cause liver abscesses | Entamoeba histolytica |
| Hepatitis type where there is AVERSION to smoking | Hep A |
| South America, travel, dysphagia, constricted distal esophagus | T. cruzi |
| UTI, hospitalized pt w/ urinary catheter | Klebsiella pneu / E. faecalis |
| Most highly resistant bug causing subacute endocarditis and hospital catheter acquired UTI | E. faecalis |
| Stages of syphilis | Painless chancre; condyloma lata macular lesions; CNS deterioration and aortic aneurysms |
| Positive Tzanck, multinucleated cells w/ intranuclear inclusions | HSV-2 |
| Three etio of common cold | Rhino, corona, adeno |
| Pharyngitis, pink eye, pt in summer camp or military or college dorm | ADENOvirus |
| PNA w/ broad based bud, chronic, granulomas in lungs | Blasto |
| PNA in SW USA/mexico | Coccidioides |
| PNA-like, hemoptysis, animal hair/hide | B. anthrax |
| Mild PNA, animal hide | Coxiella |
| PNA related to water reservoir in elderly and smokers | Legionella |
| PNA w/ Anemia, DRY persistent cough, INTERSTITIAL infiltration | Mycoplasma pneu |
| PNA w/ LOBAR consolidation, rusty sputum | Strep pneu |
| Impetigo | S. aureus |
| Erysipelas | Strep pyo |
| Rash begins on palm and spreads to trunk | Rickettsia (RMSF) |
| Abscess following trauma to neck/head, draining sinus tracts | Actinomyces |
| Animal bite, osteomyelitis | Pasteurella |
Created by:
DrINFJ
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