Infection Model

Question 1

What factors affect the pathogen?

Answer 1

Type;

Viral, bacterial, fungal and parasite

Question 2

What affects the patient?

Answer 2

age, gender, physiological state, pathological state
Calander time, Relative time
Place; Current and Recent

Question 3

What are the different mechanisms of infection?

Answer 3

Contiguous (direct) spread e.g. UTI 
Inoculation 
Haematogenous e.g. bacterial endocarditis 
Ingestion e.g. ecoli 
Inhalation
Vector e.g. malaria and Zika virus 
Vertical transmission e.g. HIV

Question 4

Demonstrate the infection part of the infection model.

Answer 4

Infection leads to attachment which can lead to toxin production. The attachment can also lead to interaction with host defenses producing either (or both) inflammation and host damage.
Toxin production can also directly lead to host damage

Question 5

What is the management of an infection according to the infection model?

Answer 5

Hx, Examination, Investigations (These all lead to a diagnosis) 
The treatment (supportive and specific)  
Infection prevention (hospital and community)

Question 6

Discuss the treatment in line with infection model

Answer 6

Treatment can be supportive or specific.
Supportive: symptom relief and physiological resotration
Specific: Antimicrobials or surgery which can include; drainage, debridement and dead space removal

Question 7

What are the possible outcomes from an infection?

Answer 7

Cure ——> death

(+/ disability) or chronic infection