Micro Ch 24 Flashcards

1
Q

Strep Throat

  1. Signs&Symptoms
  2. Diagnostics
  3. Transmission
  4. Treatment
  5. Risks
A
    • redness in throat
    • pus in throat
    • pain
    • sometimes tonsilitis
    • ottitus media in kids
    • positive culture from pus in throat
    • talking
    • sneezing
    • penicillin
    • untreated leads to scarlet fever
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2
Q

Scarlet Fever

  1. mechanism of Action
  2. Signs&Symptoms
A
    • exotoxin
    • SPE family
    • travels through blood
    • high fever
    • skin rash
    • tongue red and swollen
    • cheeks are red
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3
Q

Ottitus Media

  1. Vulnerable Population
  2. Transmission
  3. Infectious Particle
  4. Signs&Symptoms
A
    • kids
    • movement from nose to ear
    • pool water
    • S. pneumonae
    • S. pyogenes
    • S. aureus
    • viruses
    • extreme pain at night that can induce vomiting
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4
Q

Diptheria

  1. Prevention
  2. Treatment
  3. Mechanism of Action
  4. Signs&Symptoms
A
    • DTaP
    • trach
    • tonsil removal
    • membrane removal
    • exotoxin AB Classic
    • enters causing cell protein synthesis and cell death
    • fever
    • soar throat
    • fatigue
    • neck swelling
    • oozing fluid
    • fluid thickens and blocks throat
    • suffocation
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5
Q

Describe the cutaneous form of diphtheria

A
  • skin ulcers form with pseudomembrane

- caused by lack of sanitation or needle use

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6
Q

Pertussis

  1. Attachment
  2. Prevention
  3. Caterral Stage
  4. Exotoxin Stage
  5. Convalescence Stage
A
    • capsule
    • DTaP
    • booster doses needed
    • endotoxin
    • fever
    • runny nose
    • conjunctivitis (bordatella)
    • tracheal
    • NO release (causing cell death)
    • mucus blocks resp tract
    • bouts of violent coughing (can cause brain bleed or broken ribs)
    • survivors can have epileptic fever
    • 4-6 weeks
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7
Q

Tuberculosis

  1. Infectious Particle
  2. Mechanism of Action
  3. Severity
  4. Prevention
  5. Diagnosis
A
    • mycobacterium tuberculosis
    • mycolic acid
    • progression related to immune response
    • BCG
    • only available in eastern world
    • skin TB test
    • uses bacteria protein (D)
    • Mantoux
    • injected in forearm
    • 48-72 hrs then swelling is measured
    • good baseline test
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8
Q

Tuberculosis: Progression in Healthy Individual

A
  • macrophages capture bacteria

- no symptoms

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9
Q

Tuberculosis: Progression in Partial Immunocompromised Individual

A
  • macrophages can’t destroy all bacteria
  • macrophages form wall around bacteria
  • lesions form tubercle
  • calcified
  • GHON complexes
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10
Q

Tuberculosis: Progression in Completely Immunocompromised Individual

A
  • complete immune failure
  • bacilli escape
  • “consumption”
  • cough up blood
  • VERY contagious
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11
Q

Tuberculosis: Treatment

A
  • *treatment is only available for full, not partial failure
  • Isoniazid (low dose to prevent liver harm)
  • Ethambutol (no side effects)
  • pyrizinamide (low antibiotic resistance)
  • rifampin
  • streptomyocin (low dose, only used if pt is strong enough)
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12
Q

Pneumonia: Typical

  1. Infectious Particle
  2. Attachment
  3. Strains
  4. Signs&Symptoms
  5. Risks
  6. Vulnerable Population
A
    • S. pneumonia
    • capsule
      3.
    • 90
    • high fever
    • breathing difficulty
    • chest pain
    • rust coloured sputum
    • can be sepecemic
    • effects pleural cavity
    • can cause meningitis
    • COPD
    • Diabetes
    • kidney disease
    • smoking
    • HIV
    • alcohol
    • environmental pollutions
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13
Q

Pneumonia: Atypical

  1. Infectious Particle
  2. Signs&Symptoms
A
    • anything else
    • bacteria
    • fungi
    • virus
    • slower onset
    • less fever
    • chest pain
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14
Q

Pneumonia: Atypical, Haemophilus influenzae

A
  • smokers
  • grows in chocolate agar
  • immunocompromised
  • young people
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15
Q

Pneumonia: Atypical, M. pneumoniae

A
  • fried egg

- young people

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16
Q

Pneumonia: Atypical, L. pneumophilia

A
  • charcoal agar
  • no endospore
  • Pontiac Fever (mild)
  • Legionaires (fatal)
  • spreads through H2O
  • multiple organ failure
  • CNS, GI, diarrhia
  • erythromycin
  • FQ or Cipro
17
Q

Pneumonia: Atypical, RSV

A
  • viral
  • 1-3 yr
  • spring (spores)
  • syncatium (gian lung cells) form
  • slow, wheezing
  • treat with O2
  • if wheezing is continuous- bronchitis
  • Hoodini virus
  • escapes phagocytes