Flashcards in Microbiology 1 - Resp. infections Deck (42)
What infections tend to affect the upper respiratory tract?
Common cold (coryza)PharyngitisSinusitisEpiglottitis
What infections tend to affect the lower respiratory tract? (4)
Acute bronchitisAcute exacerbation of chronic bronchitisPneumoniaInfluenza
What is coryza?
The common cold - acute viral infection of nasal passages
How is the common cold spread/
Droplets and fomites
Complications of the common cold? (2)
What 3 organisms tend to cause your common cold?
AdenovirusRhinovirusRespiratory syncytial virus
Treatment of acute sinusitis?
Most are viral and therefore self limiting resolving in about 10 days but some need antibiotics
What is a quinsy?
Abscess between tonsil and wall of throat (complication of tonsillitis)
What is diphtheria?
Diphtheria is a potentially fatal contagious bacterial infection that mainly affects the nose and throat, and sometimes the skin -causes a pseudo-membrane to form over the thought and is life threatening due to toxin production - not seen in Uk due to vaccination
What is epiglottitis?
A life threatening inflammation of the epiglottis that can cause obstruction
What is acute bronchitis?
also known as a chest cold, is short-term inflammation of the bronchi (large and medium-sized airways) of the lungs
Clinical features of acute bronchitis?
Preceded by a common coldProductive coughFever in the minority of casesNormal chest examinationNormal chest x-rayMay have a transient wheeze
Treatment of acute bronchitis?
Self limiting in normal meaning antibiotics are not requiredCan lead to significant morbidity in patients with chronic lung disease
Incubation period for rhinovirus?
Incubation time for group A streptococci?
Incubation time for influenza and parainfluenza viruses?
Incubation time for RSV?
Incubation time for pertussis?
7 -21 days
What is pertussis?
Incubation time for diphtheria?
Incubation time for EBV?
Types of pathogens that tend to cause URTI?
RhinovirusAdenovirysGroup A strepInfluenza and parainfluenzaRSVPertussisDiptheriaEBV
Clinical features of an acute exacerbation of COPD?
Usually preceded by an upper respiratory tract infectionIncreased sputum productionIncreased sputum purulenceMore wheezyBreathlessOn examination:Respriatory distressWheezeCoarse cracklesMay be cyanosedIn advance disease - ankle oedema
What are acute exacerbations of COPD?
a sustained worsening of the patient's symptoms from his or her usual stable state, which is beyond normal day-to-day variations and is acute in onset
Management of acute exacerbation of COPD?
Manage in primary care with antibiotics (amoxicillin or doxycline), bronchodilator inhalers, short course of steroids in some casesRefer to hospital if evidence of respiratory failure, not coping at homeManagement in hospital = same as before + measure arterial blood gases, CXR to look for other disease, oxygen if respiratory failure
What is pneumonia?
acute inflammation with an intense infiltration of neutrophils in and around the alveoli and the terminal bronchioles.
What is the difference between pneumonia and pneumonitis?
Pneumonia is inflammation of the lung tissue due to infection where as pneumonitis is inflammation of the lungs general (usually used to describe non-infectious causes)
What is it called when the lungs become engorged with blood cells (usually due to pneumonia) and resemble liver tissue?
What is pleurisy?
inflammation of the pleurae, which impairs their lubricating function and causes pain when breathing. It is caused by pneumonia and other diseases of the chest or abdomen.