S2) Infection Model Flashcards
Identify the components in the model of infection
- Pathogen
- Patient
- Mechanism of infection
- Infection
- Management
- Outcome
Describe the layout of the infection model
Classify pathogens in terms of the infection model
- Virus
- Prokaryotes: bacteria
- Eukaryotes:
I. Fungus – yeast, mould
II. Parasites – protozoa, helminth
Describe the ‘patient’ component in the infection model
- Person – age, gender, physiological and pathological states, social factors
- Time – calendar time/relative time
- Place – current/recent
Identify the 7 different mechanisms of infections
- Contiguous spread
- Haematogenous
- Inoculation
- Ingestion
- Inhalation
- Vector
- Vertical transmission
Identify the three parts of the management component in the infection model
- Diagnosis
- Treatment (specific and supportive)
- Infection prevention (hospital and community)
important to prevent it spreading to other hospital staff, patients
Identify the three processes outlined in the diagnosis of an infection
- History
- Examination
- Investigations
Identify the two types of treatment for an infection
- Specific (surgery, drainage)
- Supportive (symptom relief, physiological restoration)
Outline the two types of specific treatments for infections
- Antimicrobials
- Surgery – drainage, debridement, dead space removal
Outline two types of supportive treatment for infections
- Symptom relief
- Physiological restoration
What are the two locations for infection prevention?
- Hospital
- Community
Identify 4 different outcomes for infections
- Cure
- Chronic infection
- Disability
- Death
Describe the infection component of the infection model
PAMPs
pathogen associated molecular patterns
molecules on phagocyte to make it seen as foreign
describe ways that the infection spreads
- attachment of the pathogen to a cell
- toxin production
- damage to a host cell
all lead to inflammation
PRRs
they bind to the phagocyte receptor
oposonisation
enhance interaction between the phagocyte and microbe
candida
cellulitis
pneumonia
life threatining condition when bodys response to an infection injures its own tissues and organs
- contain no IGA - found on mucosal surfaces in eg respiratory tract
adenovirus
conjunctivitis = red eye
inflammed mouth
