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Vascular infections: exceeding the threshold
1Harry S. Truman Memorial VA Hospital, Columbia, MO 65201, USA.
Abstract:
During fiscal year 1988, our hospital infection control practitioner identified a 400% increase in the incidence of vascular surgery nosocomial infections. The six graft and six amputation infections were validated as nosocomial against hospital definitions adopted from the Centers for Disease Control. Our Infection Control Committee mandated an audit of the infected vascular surgery patients using a case/control design to identify and examine associated variables that may need attention. The significant finding was microbial resistance to prophylactic antibiotics used during surgery (p > 0.0001, Fisher's exact). The use of vancomycin as a prophylactic antimicrobial agent for all major vascular cases was recommended to the surgeons.
Insights
A significant rise in vascular surgery infections was observed, linked to antibiotic-resistant microbes. Vancomycin was recommended to combat these resistant bacteria and prevent future hospital-acquired infections.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Surgical Infections
Background:
- A notable 400% increase in nosocomial (hospital-acquired) infections within vascular surgery was identified.
- Infections included six vascular graft and six amputation cases, confirmed using Centers for Disease Control (CDC) criteria.
- This surge prompted an investigation into potential contributing factors.
Purpose of the Study:
- To investigate the causes behind the increased incidence of nosocomial infections in vascular surgery patients.
- To identify specific variables associated with these infections.
- To provide evidence-based recommendations for infection control.
Main Methods:
- A case/control study design was employed to audit infected vascular surgery patients.
- Data analysis focused on identifying variables associated with the increased infection rates.
- Statistical significance was assessed, including Fisher's exact test.
Main Results:
- A critical finding was the microbial resistance to commonly used prophylactic antibiotics during surgery (p > 0.0001).
- This resistance was a significant factor contributing to the observed increase in infections.
- The study highlighted a failure in the efficacy of standard antibiotic prophylaxis.
Conclusions:
- The study concluded that microbial resistance to prophylactic antibiotics is a major driver of nosocomial infections in vascular surgery.
- Vancomycin was recommended as a prophylactic antimicrobial agent for all major vascular procedures.
- Implementing vancomycin prophylaxis is crucial to mitigate the risk of resistant infections in this patient population.