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Flashcards in REVIEW: Streptococcus Pneumonia Deck (14)
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1

Know the following characteristics about Streptococcus pneumoniae:
Genus and species name
Gram reaction
Cell shape
Disease name
Transmission
Virulence factors
Clinical symptoms of disease
Treatment

Genus name: Streptococcus
species name:pneumoniae
Gram reaction: +
Cell shape: coccus
Disease name: pneumonia

Transmission:Air droplets person to person
Inhale encapsulated strain
Host must be susceptible

Virulence factors:Polysaccharide capsule:
more than 80 types(strains)
capsule is directly responsible for infection
unencapsulated strains are not pathogenic


Clinical symptoms of disease:Fever, chills
Shortness of breath, chest pain
Productive cough: sputum is thick, mucus-filled, pus, bacteria, dead tissue, blood
Alveoli fill with exudate

Treatment:Penicillin drug of choice
Early treatment best

2

Be able to translate the organism’s genus and species name into the English language as given in class.

Streptococcus - chain former / round shape
pneumonia - pneumonia / lungs

3

What virulence factor is directly responsible for this bacteria establishing infection?

capsule is directly responsible for infection

4

What are the two forms of the vaccine for Pneumococcal pneumonia?

Two Forms:
Adult Vaccine:
Pneumococcal polysaccharide vaccine
primarily for older adults
help control incidence of disease
made from 23 capsular Ags

Infant/Toddler Vaccine:
For children up to age 5
Pneumococcal conjugate vaccine
Protection for 3 years

5

What is pneumococcal disease in infants and toddlers?

Pneumococcal disease in children under age 5
Over 700 cases of meningitis
17,000 blood infections
5 million ear infections
Children under age 2 at highest risk
Prevention very important

6

Why is pneumococcal pneumonia usually a secondary infection in the lower respiratory tract?

Secondary infection: infection results due to an underlying infection or drug/alcohol abuse

7

What protective feature of the lower respiratory tract helps to protect an individual from pneumococcal pneumonia?

Mucociliary escalator effective in protecting lungs

8

What age group is most at risk for Pneumococcal pneumonia?

Children under age 2 at highest risk

9

What is meant by the expression “a patient is literally drowning on their own body fluid” with pneumococcal pneumonia?

Exudate is fluid that leaks out of blood vessels into tissue.
Patient suffocates on own body fluid(exudate)
No gas exchange occurs in exudate
Inflammatory response causes pain (pleurisy)

10

What is a rusty sputum?

sputum that has blood in it

11

What is exudate?

Exudate is fluid
Leaks out of blood vessels into tissue
May ooze from cuts, area of infection, or inflammation

12

What is bronchial pneumonia?

pneumonia in the bronchial

13

What is lobar pneumonia?

in only one lung/lobe

14

What is double pneumonia?

pneumonia in both lungs