Infections of the trachea and bronchi Flashcards
What is acute epiglottitis also known as?
HAEMOPHILUS INFLUENZA
(CAPSULAR TYPE b)
Is this a common or rare, or serious infection?
RARE BUT VERY SERIOUS INFECTION
How is diagnosis?
MAY ISOLATE FROM BLOOD CULTURE
throat swap may be taken if air way is protected
Exactly what medium is used in the blood culture and why?
Blood and chocolate in 5% CO2
Good growth on chocolate
Weak growth on blood
How is Haemophilus influenzae identified in cluture?
Short Gram negative rod
Sub to nutrient agar
X(haemin) and V (nicotinamide adenine dinucleotide) dependant
What is COAD?
CHRONIC BRONCHITIS
In healthy what bacteria colonisies bronchial tree?
IN HEALTH the BRONCHIAL TREE IS STERILE
What caused COAD?
BRONCHIAL TREE COLONISED BY BACTERIA
What can caused COAD to be infectively exacerbated?
SMOKING, POLLUTION, VIRAL INFECTION
Why is COAD exacerbated by these factors?
CAUSE DAMAGE TO:
NORMAL IMMUNOLOGIC BARRIER
BECOMES OVERRUN BY COLONISING BACTERIA
What are the causative organisms of COAD?
HAEM. INFLUENZAE,
MORAXELLA CATARRHALIS
STREP. PNEUMONIAE
What is the normal clinical process of an Acute bronchitis infection in the patient?
usually comes on quickly and gets better after several weeks
Where is Moraxella catarrhalis collected for Indentification?
From Sputum
What medium can be used for the culture?
Good growth on blood and chocolate in 5% CO2
What are the phyiscal characterics of moraxella catarrhalis in culture?
Colonies lifted intact from media
Oxidase positive short Gram negative rods
Other identifications x3?
No sugar fermentation
DNA’ase positive
No X or V factor requirement
Which infection is called Whooping Cough?
BORDETELLA PERTUSSIS INFECTION
What is the presentation in children?
TRACHEOBRONCHITIS OF CHILDREN
Why is whooping cough now rare in the uk?
AFTER WIDESPREAD USE OF VACCINE
What is the associated consequence of untreated infection?
CHRONIC CHEST DISEASE
How is sample taken for diagnosis?
PERNASAL SWAB
Which medium is used for the culture?
CHARCOAL-BLOOD AGAR IN CO2 ENRICHED ATMOSPHERE
What shape and gram status are BORDETELLA PERTUSSIS?
THIN GRAM NEGATIVE RODS
when is agglutination seen?
AGGLUTINATE WITH B. PERTUSSIS ANTISERUM
