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Community Acquired Pneumonia
Pulmonary Module
47
Medical
Graduate
10/27/2009

Additional Medical Flashcards

 


 

Cards

Term
What is the definition of community acquired pneumonia that enables one to make a diagnosis?
Definition

need acute interstital changes on xray

need acute symptoms of infection

need to be in community out of hospital/long term care for >14 days

Term
How many cases of community acquried pneumonia are there per year in the US?
Definition
2-3 million
Term
What is true of blood cultures in pneumonia?
Definition
they are highly specific but not senstitive
Term
What types of pneumonia can you do urinary antigen test for?
Definition
Legionella and Streptococcus Pneumoniae
Term
If you suspect legionella what type of test would you want to perform other than a urine antigen test?
Definition
sputum test with dieterle silver stain
Term
What serotype does the legionella urine antigen test test for?
Definition
serotype 1
Term
if you suspect Pneumocystis carinii, what type of stain would you do? (not in this lecture, but for the boards)
Definition
methenamine silver stain
Term
What are the four most common community acquired pneumonia in order?
Definition

streptococcus pneumonia

Haemophilis Influenza (nontypeable)

Mycoplasma pneumonia

Chlamydia Pneumonia

Term
What does prior antibiotic treatment due to the sensitive of a test?
Definition
lowers it
Term

What are the three most common pneumonias seen in otitis media in order?

 

and for COPD?

Definition

streptococcus Pneumonia

Haemophilus INfluenza (non-typeable)

Moraxella catarrhalis

 

 

COPD: H. Influenza, Moraxella, Strept

 

Term
What three pneumonias are most common in patients post influenza?
Definition

streptococcus pneumonia

H. Influenza

Staph aureus

Term
What are the three most common types of pneumonia in early HIV infected patients?
Definition

Streptococcus Pneumonia

H. Influenza

TB

Term
What is the most likely general bacteria causing pneumonia in aspiration and airway obstruction?
Definition
mouth anaerobes
Term
If one has exposure to birds, what cause of pneumonia is most common?
Definition
chlamydia psittaci
Term
What is the gram stain of haemophilus influenza?  What other bacteria has this same stain?
Definition

gram negative coccobacillus

 

same as bordetela pertussis

Term
What are the most common serotypes of Haemophilus Influenza?
Definition
B and non-typeable
Term
Which form of Haemophilus influenza is more invasive?  B or nontype
Definition
B
Term
What ethnic groups have a higher risk for Haemophilus INfluenza?
Definition
A.A. and Native Americans
Term
Why is there a low rate of nasopharyngeal colonization of haemophilus influenza type B?
Definition
b/c of vaccine
Term
How is haemophilus influenza spread?
Definition
airborn or direct contact
Term
Which form of Haemophilis Influenza is a more clonal type?
Definition
HiB
Term
What is early colonization of nontypeable haemophilus influenza associated with?
Definition
otitis media
Term
Who has an increase colonization of H. Influenza, the young or old?
Definition

young

Term
What individuals is it common to have lower respiratory tract colonization of H. INfluenza?
Definition
COPD patients
Term
In children less than 6 what does H. Influenza Cause?
Definition

Epiglottitis

Meningitis

Otitis Media (non typeable)

Pneumonia

cellulitis

Term
Which type of H. Influenza causes the otitis media?
Definition
nontypeable
Term
What does H. Influenza cause in adults?
Definition

COPD exacerbation

Sinusitis

Community acquired pneumonia (2nd leading cause)

Term
Which form of H. Influenza is spread hematogenously?
Definition
HIB
Term
What is the pathogenesis progression of Haemophilus influenza type B from colonization of the upper respiratory tract to CSF?
Definition

colonize upper respiratory tract

invades respiratory epithelial cells

replicates in submucosa

gets into blood (bacteremia)

Into CSF through choroid plexus

Meningitis

Term
What type of Haemophilus INfluenza effects children <6 more severly?
Definition
HIB
Term

Which type of Haemophilus INfluenza causes a localized mucosal infection and does not invade?

 

Definition
nontypeable
Term
How does nontypeable Haeophilus INfluenza get into the ear to cause otitis media when it is not invasive?
Definition
it travels up eustacain tube
Term
What is the gram stain of Moraxella catarrhalis?
Definition
gram negative cocci
Term
Why can't bordetella pertussis live outside the body?
Definition
it is strictly aerobe
Term
Which is true of the toxins in bordatella pertusis?
Definition
powerful and the classic A/B structure
Term
What does bordetella pertussis cause?
Definition
Whooping Cough
Term
How is bordatella pertussis spread?
Definition
droplet/aerosol
Term
Why are we seeing more bordatella pertusis in infants and adults (2 seperate reasons)?
Definition

in infants less than 1 b/c of decreased maternal antibody

 

and in adults b/c of limited duration of vaccine efficacy

Term
What are the three stages of bordatella pertussis infection?
Definition

catarrhal/prodromal stage

paroxysmal stage

convalescent stage

Term

Which stage of bordatella pertussis is non specific?

 

How long does it last?

Definition

catarrhal/prodromal stage

 

lasts for 7-14 days

Term
What stage in bordatella pertusis do you get the paroxysm cough tenacoious mucous and lymphocytosis?
Definition
paroxysmal stage
Term
How long does the paroxsymal stage last in Bordatella Pertusis?
Definition
1-2 weeks
Term
How long does the convalescent stage last in bordatella pertussis?
Definition
3-4 wks
Term

Bordatella pertussis causes both local and systemic effects.  What attributes to the local effects?

 

What attributes to the systemic effects?

Definition

local effects are due to the tetrapeptide disaccharide tracheal cytotoxin

 

 

systemic effects are due to the toxin production

Term
What is the systemic manifestation in bordatella pertussis?
Definition
lymphocytosis
Term
What is the local manifestation of bordatella pertusis?
Definition
ciliary loss, mucous, cough
Term
WHat bacteria elements does the pertussis vaccine contain? (4)
Definition
fimbriae, pertactin, filamentous hemagglutinin, inactivate pertussis toxin
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