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Questions and Answers
Which feature is NOT one of the Celsian clinical features of acute inflammation?
Which feature is NOT one of the Celsian clinical features of acute inflammation?
Which type of organism predominantly causes tissue necrosis and suppuration in wound abscesses?
Which type of organism predominantly causes tissue necrosis and suppuration in wound abscesses?
What does granulation tissue consist of?
What does granulation tissue consist of?
What is a common consequence of a chronic abscess?
What is a common consequence of a chronic abscess?
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Which diagnostic method is usually accurate in assessing wound abscesses and may allow guided aspiration?
Which diagnostic method is usually accurate in assessing wound abscesses and may allow guided aspiration?
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Which statement is accurate for class I clean wounds?
Which statement is accurate for class I clean wounds?
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What is the risk of infection in class I clean wounds?
What is the risk of infection in class I clean wounds?
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Which organisms are associated with chronic abscesses and fistula formations?
Which organisms are associated with chronic abscesses and fistula formations?
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Study Notes
Wound Management and Diabetic Foot
Characteristics of an Abscess
- Presents with calor (heat), rubor (redness), dolor (pain), and tumour (swelling)
- May also exhibit functio leasa (loss of function) and damage to the infected part
Causes and Composition of an Abscess
- Caused by pyogenic organisms, mainly Staphylococcus aureus
- Composed of pus, dead and dying white blood cells, and damaging cytokines, oxygen-free radicals, and other molecules
Formation and Resolution of an Abscess
- Surrounded by an acute inflammatory response and a pyogenic membrane
- Granulation tissue forms later around the suppuration, leading to collagen deposition
- May spontaneously discharge through a surgical incision, but most take 7-9 days to form after surgery
- May need debridement and curettage with exploration to resolve
Complications of Chronic Abscesses
- May lead to sinus or fistula formation
- Persistent chronic abscesses may exhibit lymphocytes and plasma cells, sequestration, and calcification
- Certain organisms, such as mycobacteria, are related to chronicity, sinus, and fistula formation
Diagnostic Tools
- Plain or contrast radiographs may not be helpful
- CT scan, MRI, and isotope scans are usually accurate and may allow guided aspiration without surgical intervention
Surgical Site Infections
Classification of Surgical Wounds
- Class I or clean wounds: low risk of infection (1-4%)
- Class II clean contaminated wounds: slightly higher risk of infection (3-6%)
- Classified based on potential risk of microbial contamination and whether a hollow viscous is entered
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Description
This quiz covers the characteristics, causes, and composition of abscesses in diabetic foot, including signs, symptoms, and the role of pyogenic organisms.
