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Loss of split thickness skin grafts due to non-group A beta-haemolytic streptococci
G R Wilson1, G W French, L Sully
1Burns Unit, City Hospital, Nottingham.
Abstract:
Over a 17-month period 77 patients requiring a split skin graft for a burn injury have suffered loss of previously well taken graft due to the growth of a beta-haemolytic streptococcus. Of these only 42 were streptococci of Lancefield group A (Streptococcus pyogenes); 16 were group B, 3 group C and 16 group G. Some strains of groups B, C and G produce cytopathic and spreading factors capable of destroying the new skin graft and regenerating epithelium. We suggest that the non-group A streptococci may be more pathogenic than previously recognised in this particular respect.
Insights
Beta-haemolytic streptococci can cause split skin graft loss in burn patients. Non-group A strains, including groups B, C, and G, may be more pathogenic than previously thought.
Area of Science:
- Infectious diseases
- Dermatology
- Microbiology
Background:
- Split skin graft loss is a significant complication in burn injury management.
- Beta-haemolytic streptococci are known pathogens, but their role in graft failure requires further investigation.
Purpose of the Study:
- To investigate the incidence and specific types of beta-haemolytic streptococci involved in split skin graft loss.
- To assess the pathogenic potential of different streptococcal groups in graft failure.
Main Methods:
- Retrospective analysis of 77 burn patients over 17 months who experienced graft loss.
- Bacteriological identification of streptococcal isolates, including Lancefield grouping.
Main Results:
- 42 of 77 graft losses were attributed to Streptococcus pyogenes (Group A).
- Non-group A streptococci (16 Group B, 3 Group C, 16 Group G) were also implicated.
- Groups B, C, and G streptococci demonstrated the production of cytopathic and spreading factors.
Conclusions:
- Non-group A beta-haemolytic streptococci, particularly groups B, C, and G, may play a more significant role in split skin graft loss than previously recognized.
- These non-group A strains possess virulence factors capable of destroying newly grafted skin and epithelium.