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The impact of postdischarge infection on surgical wound infection rates
K Reimer1, C Gleed, L E Nicolle
1Office of Infection Control, Calgary General Hospital, Alberta, Canada.
Abstract:
We undertook a study of postdischarge infections to assess the reliability of a surgical wound surveillance program in a 930-bed teaching hospital. During a six-month period, a subset of operations performed each day was randomly selected and patients interviewed by telephone one month postsurgery using a standard set of questions. The infection rate for all patients contacted directly postdischarge was 5.4%, whereas the surgical wound infection rate determined for all procedures through the standard hospital program was 1.5%. For day-surgery patients, who are not routinely followed in the hospital surveillance program, 8 (7.8%) of 103 patients contacted had infection. Thus, the overall surgical infection rate determined in this study was over three times higher than that calculated using standard surveillance. A reliable method for identifying postdischarge wound infections is necessary to ensure accurate surgical wound infection rates.
Insights
A study found that postdischarge infection surveillance identified over three times more surgical wound infections than standard hospital programs. Reliable methods are needed to accurately track surgical site infections after patients leave the hospital.
Area of Science:
- Healthcare quality and safety
- Infectious disease surveillance
- Surgical outcomes research
Background:
- Standard hospital surveillance programs may underestimate surgical wound infection rates.
- Postdischarge infections are a critical metric for surgical quality assessment.
- Teaching hospitals require robust methods for tracking patient outcomes.
Purpose of the Study:
- To evaluate the reliability of a hospital's surgical wound surveillance program.
- To compare postdischarge infection rates identified through direct patient contact versus standard surveillance.
- To highlight the need for improved methods in identifying surgical site infections.
Main Methods:
- A six-month prospective study in a 930-bed teaching hospital.
- Random selection of surgical procedures for follow-up.
- Telephone interviews with patients one month post-surgery using standardized questions.
Main Results:
- The overall surgical infection rate identified was 5.4%, significantly higher than the 1.5% from the standard hospital program.
- Day-surgery patients, not routinely monitored, showed a 7.8% infection rate.
- The study revealed a substantial underestimation of surgical wound infections by the existing surveillance system.
Conclusions:
- Current standard hospital surveillance underestimates surgical wound infection rates.
- Direct postdischarge patient follow-up is crucial for accurate infection rate determination.
- Enhanced surveillance methods are necessary to ensure reliable surgical outcomes data.