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30 Cards in this Set
- Front
- Back
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Airborne disease |
Respiratory droplets |
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Portal of entry |
Nose Mouth Ears Eyes |
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Means of transmission |
Airborne respiratory droplets |
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Streptococcal organisms |
Streptococcus pyogenes Chain of pus makers |
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2 classification methods |
Hemolysis Lansfield system |
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Alpha hemolysis |
Green black |
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Group A strep |
Beta-Clear Encapsulated |
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Gamma |
No change |
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Lansfield system |
1933 A-O based on carbs in cell wall |
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Streptococcus pyogenes |
Group A Beta hemolytic Encapsulated Causes: step throat, Scarlet fever, rheumatic fever, puerperal fever, necrotizing fasciitis, glomerulonephritis |
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S. Pyogenes pathogenicity due to |
Capsule Pili Adhesion factors Exotoxin |
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Capsule |
Prevents drying Retards phagocytosis |
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Pili |
Most humans have receptors in cilia or pharynx |
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Adhesion factor |
M protein Protrudes from cell wall Adheres to pharyngeal tissue |
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Exotoxin |
Makes blood come out capillaries |
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Scarlet fever |
Strep throat plus rash Treated with penicillin & clarithromycin |
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Erythrogenic exotoxin |
Red toxin causes rash Blood leaks out |
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Rheumatic fever |
M protein resembles protein in heart valves and joint capsules |
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Necrotizing fascitis |
Hyaluronidase Spreads through connective tissue |
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Group B strep |
Neonatal sepsis Streptococcus agalactiae |
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Corynebacterium diphtheria |
Aerobic, non motile, club shaped Metachromatic granules give classic staining pattern Exotoxin inhibits protein synthesis & creates pseudomembrane Treatment penicillin and arithromycin and antitoxin Russia Asia
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Meningitis |
Any organism can cause it Most dangerous bacterial (virus, fungi, protozoan, bacterial) Respiratory droplets Meninges of spine and brain |
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Neisseria meningitides |
Endotoxin is lipid A In saliva |
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Streptococcus pneumonia |
High mortality |
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Haemophilus influenza |
Misnamed Hib vaccine w/ DTap as tetramune Usually stays in URT If enters blood stream can easily cross blood brain barrier |
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Meningococcemia |
Rash Limb damage |
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Bordetella pertussis |
Tissue: bronchial tubes & lungs Fills aveoli spaces , oxygen exchange is diminished 100 day Adhere to cillia in URT Paralyze cillia, non productive cough Mucus descends to lungs |
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Streptococcus agalctiae |
Group B strep Neonatal sepsis Triggers 85% of premi |
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Gv |
G |
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3 stages of pertussis |
Catarrhal - malaise, low grade fever, increasing sever cough Paroxysms - major events of coughing, inhale over closed glottis "whoop" sound, vomiting Convalescent - sporadic coughing, 100 days aP- part of DTaP Erythromycin - reduces length and severity Adults need booster Tdap |
