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Effect of treated infection on microvascular anastomosis
Abstract:
The effect of established infection with penicillin-resistant Staphylococcus aureus on microarterial and microvenous anastomosis was studied in a rat experimental model. The infection was treated with wound debridement and systemic antibiotics at the time of the surgical procedure. It was found that the patency rate of microarterial repairs at 10-14 days was 95.1%. Veins were less resistant to infection than arteries. Two types of vein involvement were found. These were classified according to the degree of thrombosis resulting from endophlebitis. The patency rate of anastomoses performed on the more mildly infected veins was 56.5% and that on the more severely infected veins was 0%.
Insights
Penicillin-resistant Staphylococcus aureus infection significantly impacts microvascular repairs. While microarterial anastomoses showed high patency (95.1%), microvenous repairs were less successful, with 0% patency in severe infections.
Area of Science:
- Vascular surgery
- Infectious disease
- Experimental pathology
Background:
- Established infections pose challenges in surgical procedures.
- Penicillin-resistant Staphylococcus aureus is a significant pathogen in wound infections.
- Microvascular anastomosis success can be compromised by local infection.
Purpose of the Study:
- To evaluate the impact of established penicillin-resistant Staphylococcus aureus infection on microarterial and microvenous anastomosis in a rat model.
- To assess the efficacy of debridement and systemic antibiotics in managing such infections during surgery.
Main Methods:
- A rat experimental model was utilized to simulate established infection.
- Surgical procedures involved microarterial and microvenous anastomosis.
- Infection was managed with wound debridement and systemic antibiotics.
- Patency rates were assessed at 10-14 days post-surgery.
Main Results:
- Microarterial anastomosis patency rate was high at 95.1%.
- Microvenous anastomosis demonstrated lower resistance to infection.
- Two types of vein involvement were identified based on endophlebitis and thrombosis.
- Patency rates for mildly and severely infected veins were 56.5% and 0%, respectively.
Conclusions:
- Microarterial repairs exhibit robust patency even with treated Staphylococcus aureus infection.
- Microvenous anastomosis is highly susceptible to infection, with severe cases leading to complete failure.
- Vascular graft patency is significantly influenced by the degree of infectious complications.