Bacterial Infection Flashcards

1
Q

What are the pathogens of the URT

A
  • Streptococcus pyogenes
  • Streptococcal pharyngitis
  • Diphtheria
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2
Q

What is the structure of streptococcus pyogens?

A

Gram +ve chained cocci

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3
Q

What does streptococcous pyogenes cause?

A

Scarlett fever

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4
Q

What is the key symptom of streptococcus pyogens infection?

A

Sandpaper rash

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5
Q

What is the treatment of scarlett fever?

A

Usually self resolves after a week so typically none
- Antibiotics are reserved to those who need it

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6
Q

What is the structure of corynebacterium diptheriae?

A

Gram +ve bacilli

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7
Q

What disease does corynebacterium diptheriae cause?

A

Diphtheria

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8
Q

What is the key presenting feature of Corynebacterium diptheriae?

A

Formation of a pseudomembrane on the nasal cavity

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9
Q

What was the major problem of the vaccine rollout for Diptheriae?

A

It was majorly unavailable within the sourthern hemisphere such as countries like Brazil

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10
Q

What are the pathogens of the LRT?

A

Mycobacterium tuberculosos
Bordetella pertussis

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11
Q

What is the structure of Mycobacterium tuberculosis?

A
  • Neither gram +ve or gram -ve
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12
Q

What is unique about mycobacterium tuberculosis?

A

One third of the worlds population are infected with a “latent” version of it

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13
Q

What are ghan complexes?

A

Ghan complexes are the visible necrotises areas within xrays

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14
Q

What is the structure of Bordetella pertussis?

A
  • Gram negative coccobacillus
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15
Q

What does Bordetella pertussis cause?

A

Whooping cough

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16
Q

What are the main symptoms of Bordetella pertussis?

A
  • Accumulation of mucus in the lungs leading to severe coughing and wheezing
17
Q

What are the two toxins produced by Bordetella pertussis?

A
  • Pertussiss toxin (Enhances inflammation
  • Tracheal cytotoxin (Increases mucus)
18
Q

What are the three different stages of Bordetella pertussis?

A
  1. Catarrhal stage
  2. Paroxysmal stage
  3. Convalescence stage
19
Q

What occurs during the catarrhal stage of whooping cough

A

Mild flu like symptoms

20
Q

What occurs during the paroxysmal stage of whooping cough?

A

Uncontrollable coughing spasms

21
Q

What happens during the Convalescence stage of whooping cough?

A

Chronic coughing

22
Q

What agar is used to culture Bordetella pertussis?

A

Bordet-gengou medium

23
Q

What antibiotics are perscribed for Bordetella pertussis?

A

Macrolides