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Pulm-Micro
URT Bacterial Pathogens
56
Microbiology
Graduate
10/03/2010

Additional Microbiology Flashcards

 


 

Cards

Term
Normal Flora of the URT
Definition
Diptheriods, H. influenzae, Moraxella, Coag (-) Staph, Staph aureus, Pneumococci
Term
Most common causes of Pharyngitis
Definition
Adenovirus, Rhinovirus, Group A Strep
Term
Most common cause of Otitis Media
Definition
S. pneumoniae, Non-typable H. influenzae, Moraxella
Term
Presentation of Otitis Media
Definition
Inflamed Typanic membrane with purulent fluid behind
Term
Presentation of Pharyngitis
Definition
Pain while swallowing with an inflamed pharynx
Term
Morphology of Moraxella
Definition
Small Gram (-) coccibacillus, cocci, bacili
Term
Lab Diagnosis of Moraxella
Definition
Oxidase (+), Non-Carb Fermenter, Blood Agar culturable
Term
Diseases caused by Moraxella
Definition
Otitis Media, Sinitis
Brochisis, Pneumonia, Conjunctivitis in Elderly or Compromised
Term
Treatment of Moraxella
Definition
Non-Beta Lactam Antibiotics
Term
Morphology of Haemophillus influenzae
Definition
Small Pleomorphic Gram (-) Bacillococci, Bacilli
Term
Lab Growth of H. influenzae
Definition
Satellite Colonies on Blood Agar Cocolate agar with Factor V and X (NAD and Hematin Respectively)
Term
Virulence factors for H. influenzae
Definition
Capsule, IgA Protease, Endotoxin, Membrane adhesive proteins
Term
Diseases causes by H. influenzae
Definition
Otitis Media, Epiglotitus, Pneumonia Meningitis, Arthritis, Cellulitis
Term
Lab Diagnosis of H. influenzae
Definition
PRP Latex Agglutination
Site swab cultured on Chocolate agar
Term
Immunity to H. influenzae
Definition
Anti-PRP Antibody
Term
Non-Typeable H. influenzae diseases
Definition
Sinitus, Otitis Media, Pneumonia, Bronchitis
Term
What is H. influenzae Type B Antigen
Definition
Polyribose-Ribitol Phosphate
Term
Haemophillus influenzae Treatment
Definition
Ampicillin first is sensitive, then Cephalosporins
35% are B-Lactam and AMP resistant
Term
Epidemiology of H. influenzae
Definition
Nontypable: 60-90% Normal flora
Typable: 5-0.5% Carriers
Term
Prevention of H. influenzae
Definition
PRP conjugated to CRM197 Diptheria Protein
immunization at 2,4,6 11-15 mths, 4-6 yrs, 11-18 yrs
Term
Morphology of Streptococcus pyogenes
Definition
Gram(+) Cocci in Chains, Catalase(-), B-hemolytic, Group A Antigen, Bacitracin Sensitive
Term
Epidemiology of Group A Strep
Definition
30% of Anterior Nasals, <10yrs, Winter
Term
Strep pyogenes Transmission
Definition
Droplet Infection
Term
Virulence Factors for Streptococcus Pyogenes and Role
Definition
Streptolysin O and S
M-Protein- binds keratin
Streptokinase, Streptodornase, Hyluronidase
Capsule with Hyluronic Acid
SPE A,B,C- Delayed Hypersensitivity, Superantigen-> IL-1, TNF-alpha
Term
Primary Infections Presentation of Strep Pyogenes
Definition
White Exudate in Pharynx with enlarged tonsils and anterior cervical lymph nodes
Term
Presentation of Post-Strep Rheumatic fever
Definition
Type II Hypersensitivity: Carditis, Chorea, Erythema Marginatum, Subcutaneous Nodules, Polyarthritis, Fever, high ESD/CRP, Prolonged PR, Arthia
Term
Presentation of Post-Strep Glomerulonephritis
Definition
Type III Hypersensitivity: Hematuria, Hypertension, Facial Edema
Term
Acquirement of SPE A and C
Definition
Lysogenic Phage
Term
Lab Diagnosis of Strep pyogenes
Definition
Sreptozyme
Gram(+), B-hemolytic, Group A, Catalase(-) Bacitracin Sensitive, CAMP(-)
Term
Mechanism of Immunity to Strep pyogenes
Definition
Ig to M-Protein
Term
Treatment for Strep pyogenes
Definition
Pencillin or Erythomycin if allegic to Penicillin
Term
Symptoms of Scarlet Fever
Definition
Sandpaper Rash, Strawberry Tongue
Term
Cause of Scarlet Fever
Definition
SPE A,B,C
Term
Distinguishing Group A from group B strep
Definition
Bacitracin Sensitive is A
Term
How are Otitis Media Infections made
Definition
URT mostly in Children
Term
What Strep pyogenes sequelle can be prevented with antibiotics
Definition
Rheumatic Fever
Term
Morphology of Bordetella pertussis
Definition
Gram (-) Coccobacillus, Strict Aerobe
Term
Growth of B. pertussis
Definition
Charcoal or Bordet-Gengou Agar
Term
Virulence Factors of B. pertussis and Mechanism
Definition

Pertussis Toxin-ADP-Ribosylation of Gs

Tracheal Endotoxn

Invasive Adenylate Cyclase Filamentinous Hemmaglutinin

Hemolysin, Dermonecrotic Heat-labile toxin

Term
Disease Stages of Pertussis and Timing
Definition
Catarrheal: Rhinorrea, Sinitis (1-2 wks)
Paroxysmal Cough: Inspiratory Whoop from narrow glottis, Lymphocytosis (wks 2-3)
Convelescent: Symtom Fade (wks 3-4)
Term
Lab Diagnosis of Pertussis
Definition
Culture
Immunoflorescence
PCR
Term
Immunity to Pertussis
Definition
sIgA, but doesn't last a lifetime
Term
Empidemiology of Pertussis
Definition
Infants and Children, Only Humans
Term
Prevention of Pertussis
Definition
Vaccine @ 2,4,6, 11-15 mths, 4-6 yrs, 11-18 yrs
Term
Hallmark of Pertussis Infection
Definition
Lymphocytosis
Term
Hallmark of Pertussis Infection
Definition
Lymphocytosis
Term
Morphology of Corynebacterium diptheriae
Definition
Gram (+) rod, non-spore forming, aerobe
Chinese Letter, Palisading Arrangement, Metachromatic Granules in Methylene Blue
Term
Virulence Factors of Diptheriae
Definition
Diptheria Toxin-EF-2 ADP-Ribosylation
Term
Important points about diptheria toxin
Definition
Beta phage carrying
DtxR represses gene if Fe is present
Term

Presentation of a diptheria patient

Definition

1)Pseudomembranous plaque that bleeds when scratched, Bull Neck, Systemic Effects

2)Skin ulceration with dirty gray base

3)Mild Pharyngitis if diptheriod

Term

Lab Dx of Cornebacterium diptheria

Definition

Clinical Diagnosis

Culture: K•Tellurite/Tinsdale Agar

Biochemical Testing

Tissue Culture

Term
Immunity to diptheria
Definition
Neutralizing Ig to Diptheria Toxin
Term
Treatement of Diptheria
Definition

Passive Equine Immunity against DT

Macrolides TX: Penicillin, Erythromycin

Term
Epidemiology of Pertussis
Definition
Human only
Term
Prevention of Diptheria
Definition
Toxoid 2,4,6,11-15mths,4-6yrs,11-18yrs
Term
Why is Diptheria diagnosis reliant on clinical eveluation
Definition
Few organisms to culture and asymptomatic onset
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