Surgical Site Infection Surveillance Program Research Articles

Effect of participation in a surgical site infection surveillance programme on hospital performance in Japan: a retrospective study

The effect of hospital participation in the Japan Nosocomial Infection Surveillance (JANIS) programme on surgical site infection (SSI) prevention is unknown. To determine if participation in the JANIS programme improved hospital performance in SSI prevention. This retrospective before-after study analysed Japanese acute care hospitals that joined the SSI component of the JANIS programme in 2013 or 2014. The study participants comprised patients who had undergone surgeries targeted for SSI surveillance at JANIS hospitals between 2012 and 2017. Exposure was defined as the receipt of an annual feedback report 1 year after participation in the JANIS programme. The changes in standardized infection ratio (SIR) from 1 year before to 3 years after exposure were calculated for 12 operative procedures: appendectomy, liver resection, cardiac surgery, cholecystectomy, colon surgery, caesarean section, spinal fusion, open reduction of long bone fracture, distal gastrectomy, total gastrectomy, rectal surgery, and small bowel surgery. Logistic regression models were used to analyse the association of each post-exposure year with the occurrence of SSI. In total, 157,343 surgeries at 319 hospitals were analysed. SIR values declined after participation in the JANIS programme for procedures such as liver resection and cardiac surgery. Participation in the JANIS programme was significantly associated with reduced SIR for several procedures, especially after 3 years. The odds ratios in the third post-exposure year (reference: pre-exposure year) were 0.86 [95% confidence interval (CI) 0.79-0.84] for colon surgery, 0.72 (95% CI 0.56-0.92) for distal gastrectomy, and 0.77 (95% CI 0.59-0.99) for total gastrectomy. Participation in the JANIS programme was associated with improved SSI prevention performance in several procedures in Japanese hospitals after 3 years.

Components of Existing National Surgical Site Infection Surveillance Programs Based on a Case Series of Low- and Middle-Income Countries: Building Blocks for Success and Opportunities for Improvement.

Background: Surgical site infection (SSI) surveillance programs are recommended to be included in national infection prevention and control (IPC) programs, yet few exist in low- or middle-income countries (LMICs). Our goal was to identify components of surveillance in existing programs that could be replicated elsewhere and note opportunities for improvement to build awareness for other countries in the process of developing their own national surgical site infection surveillance (nSSIS) programs. Methods: We administered a survey built upon the U.S. Centers for Disease Control and Prevention's framework for surveillance system evaluation to systematically deconstruct logistical infrastructure of existing nSSIS programs in LMICs. Qualitative analyses of survey responses by thematic elements were used to identify successful surveillance system components and recognize opportunities for improvement. Results: Three respondents representing countries in Europe and Central Asia, sub-Saharan Africa, and South Asia designated as upper middle-income, lower middle-income, and low-income responded. Notable strengths described by respondents included use of local paper documentation, staggered data entry, and limited data entry fields. Opportunities for improvement included outpatient data capture, broader coverage of healthcare centers within a nation, improved audit processes, defining the denominator of number of surgical procedures, and presence of an easily accessible, free SSI surveillance training program for healthcare workers. Conclusions: Outpatient post-surgery surveillance, national coverage of healthcare facilities, and training on how to take local SSI surveillance data and integrate it within a broader nSSIS program at the national level remain areas of opportunities for countries looking to implement a nSSIS program.

An interventional nationwide surveillance program lowers postoperative infection rates in elective colorectal surgery. A cohort study (2008–2019)

BackgroundColorectal surgery is associated with the highest rate of surgical site infection (SSI). This study analyses the effectiveness of an interventional surveillance program on SSI rates after elective colorectal surgery. Material and methodsCohort study showing temporal trends of SSI rates and Standardized Infection Ratio (SIR) in elective colorectal surgery over a 12-year period. Prospectively collected data of a national SSI surveillance program was analysed and the effect of specific interventions was evaluated. Patient and procedure characteristics, as well as SIR and SSI rates were stratified by risk categories and type of SSI analysed using stepwise multivariate logistic regression models. ResultsIn a cohort of 42,330 operations, overall cumulative SSI incidence was 16.31%, and organ-space SSI (O/S–SSI) was 8.59%. There was a 61.63% relative decrease in SSI rates (rho = −0.95804). The intervention which achieved the greatest SSI reduction was a bundle of 6 measures. SSI in pre-bundle period was 19.73% vs. 11.10% in post-bundle period (OR 1.969; IC 95% 1.860–2.085; p < 0.0001). O/S–SSI were 9.08% vs. 6.06%, respectively (OR 1.547; IC 95% 1.433–1.670; p < 0.0001). Median length of stay was 7 days, with a significant decrease over the studied period (rho = −0.98414). Mortality of the series was 1.08%, ranging from 0.35% to 2.0%, but a highly significant decrease was observed (rho = −0.67133). ConclusionsDetailed analysis of risk factors and postoperative infection in colorectal surgery allows strategies for reducing SSI incidence to be designed. An interventional surveillance program has been effective in decreasing SIR and SSI rates.

Surgical Site Infection (SSI) Surveillance Program for Mastectomy in the Department of Surgery of the University of the Philippines-Philippine General Hospital

Background. Mastectomy is a common surgical procedure done worldwide. Surgical site infection (SSI) is a common healthcare-associated infection. Mastectomy SSIs are frequently under-reported.&#x0D; Objectives. The study aimed to determine the incidence of SSI among mastectomy cases of the Department of Surgery, University of the Philippines – Philippine General Hospital (UP-PGH) during one year of full implementation of the Surgical Site Infection Surveillance Program and evaluate the program’s surveillance follow-up rate.&#x0D; Methods. This study was an observational practice audit research that included all adult patients who underwent a mastectomy in UP-PGH from January 1, 2018, to January 31, 2019, when the SSI Surveillance Program was fully implemented. SSI was monitored and assessed during the patient’s hospital stay, on the day of hospital discharge, and at 30 days (± 2 days) after surgery, either during an outpatient visit or via phone call by a nurse navigator. SSI frequency for mastectomy was computed both during the in-hospital stay and at 30 days after surgery. Surveillance follow-up rate, defined as the proportion of patients who could follow-up up to 30 days after surgery, was determined.&#x0D; Results. The 30-day SSI rate for mastectomy was 6.8% (19/279). All 279 patients were followed up to 30 days after surgery. Of the 279 patients, 277 (99.3%) were through clinic visits, one was through phone calls, and one was still admitted to the hospital.&#x0D; Conclusion. Full implementation of the SSI Surveillance Program for mastectomy in UP-PGH for one year showed a higher SSI rate than in published international literature. The program had a complete 30-day patient follow-up, contributing to more accurate SSI reporting. Implementing an SSI surveillance program with standardized protocols, dedicated personnel, patient education component, and the analysis of the information derived from such programs can improve an institution's quality of surgical care.

Feasibility of a Community Health Worker-Based Surgical Site Infection Surveillance Program

Miranda, Elizabeth MD, MPH; Niyigena, Anne MPH; Bikorimana, Laban MPH; Velin, Lotta BS; Hedt-Gauthier, Bethany PhD; Riviello, Robert MD, FACS; Kateera, Fredrick MD, PhD Author Information

Survey of National Surgical Site Infection Surveillance Programs in Low- and Middle-Income Countries.

Background: Surgical site infection (SSI) surveillance programs are strongly recommended as a core component of effective national infection prevention and control (IPC) programs. Participation in national SSI surveillance (nSSIS) programs has been shown to decrease reported SSIs among high-income countries (HICs), and it is expected that the same is possible among low- and middle-income countries (LMICs). We sought to determine what, if any nSSIS programs exist among LMICs. Methods: A cross-sectional survey was performed to evaluate existence of nSSIS of World Bank-defined LMICs. A digital survey assessment for presence of national IPC and nSSIS programs was delivered to persons capable of identifying the presence of such a program. Statistical analysis was performed using STATA. Institutional Review Board approval was obtained for this study. Results: Of the 137 countries identified, 55 (40%) were upper middle income (UMI), 47 (34%) were lower middle income (LMI), and 34 (25%) were low income. Representatives from 39 (28%) LMICs completed the survey. Of these respondent countries, 13 (33%) reported the presence of a national IPC program. There was no difference between countries with IPC programs and those without with respect to country income designation, population size, World Health Organization region, or conflict status. Only five (13% of all respondents) reported presence of a nSSIS program. Conclusions: National surgical site infection surveillance programs are an integral component of a country's ability to provide safe surgical procedures. Presence of nSSIS was reported infrequently in LMICs. International governing bodies should be encouraged to guide LMIC leadership in establishing a nSSIS infrastructure that will help enable safe surgical procedures.

Development of a surgical site infection surveillance programme in a Scottish neurosurgical unit

PurposeSurgical site infection (SSI) is a common complication in surgical practice. SSIs represent almost a fifth of healthcare-associated infections in Scotland, and have deleterious effects on mortality, morbidity, length of stay, and cost to the health service. SSIs in neurosurgery may be more consequential than in other specialities given the potentially devastating effects of central nervous system infection. The paper aims to discuss these issues.Design/methodology/approachIn 2014, the authors became concerned about an anecdotal increase in infection rates in the authors’ unit. While national guidance on SSI surveillance existed in England and Scotland, the authors had no relevant procedures or policies in Glasgow, and began the process of establishing a surveillance programme. This was driven by clinicians but faced challenges due to a lack of involvement of the wider organisation in the early stages.FindingsSSIs were initially reported via a form-filling system. This developed into an editable hospital intranet database, but still suffered from the problems of voluntary entries and under-reporting. Following the formal engagement of management structures and the funding of a surveillance nurse, the authors’ programme developed robustness, and resilience. With the advent of an SSI committee, the authors now have a well-established programme that ingrains SSI prevention in the collective learning and organisational memory of the authors’ unit.Originality/valueClinicians must lead on the development of these programmes, but long-term durability requires engagement and support from the wider organisation.

First Results of the Swiss National Surgical Site Infection Surveillance Program: Who Seeks Shall Find.

OBJECTIVES To report on the results of the Swiss national surgical site infection (SSI) surveillance program, including temporal trends, and to describe methodological characteristics that may influence SSI rates DESIGN Countrywide survey of SSI over a 4-year period. Analysis of prospectively collected data including patient and procedure characteristics as well as aggregated SSI rates stratified by risk categories, type of SSI, and time of diagnosis. Temporal trends were analyzed using stepwise multivariate logistic regression models with adjustment of the effect of the duration of participation in the surveillance program for confounding factors. SETTING The study included 164 Swiss public and private hospitals with surgical activities. RESULTS From October 2011 to September 2015, a total of 187,501 operations performed in this setting were included. Cumulative SSI rates varied from 0.9% for knee arthroplasty to 14.4% for colon surgery. Postdischarge follow-up was completed in >90% of patients at 1 month for surgeries without an implant and in >80% of patients at 12 months for surgeries with an implant. High rates of SSIs were detected postdischarge, from 20.7% in colon surgeries to 93.3% in knee arthroplasties. Overall, the impact of the duration of surveillance was significantly and independently associated with a decrease in SSI rates in herniorraphies and C-sections but not for the other procedures. Nevertheless, some hospitals observed significant decreases in their rates for various procedures. CONCLUSIONS Intensive post-discharge surveillance may explain high SSI rates and cause artificial differences between programs. Surveillance per se, without structured and mandatory quality improvement efforts, may not produce the expected decrease in SSI rates. Infect Control Hosp Epidemiol 2017;38:697-704.

Validation of surgical site infection registration in colorectal surgery

Background: Surgical site infection (SSI) represents almost 40% of nosocomial infections. Risk for SSI is most prominent following colorectal surgery. There is no Swedish standard SSI classification or surveillance. We have failed to find validation of SSI surveillance programs presently in use. This study investigates SSI registration routines at Halmstad County Hospital, Sweden (HCH) as well as Swedish surgery departments’ SSI classification and reporting practices.Methods: We requested information regarding SSI surveillance routines from all surgical departments performing colorectal surgery in Sweden. The reliability of SSI data collected routinely at HCH between 1999 and 2008 was approximated by comparing routine reports with data from a prospective study on infection prophylaxis. We calculate how much the reported SSI frequency must change for detection with current surveillance routines.Results: In all, 36 of 56 surgical departments answered a questionnaire; 24 have active SSI registration. Most commonly, SSI is detected with a combination of postoperative control in the outpatient unit and review of medical records after discharge. The department of surgery at HCH reported, from 1999 to 2008, an average SSI rate of 12.7% including emergency surgery. Compared to prospective registration, the routine provided a sensitivity of 0.56 and a specificity of 1.0. A reported frequency of 26% is required to detect a statistically significant increase in SSI.Conclusion: Swedish hospital SSI rates cannot be compared, there is neither uniform SSI surveillance nor classification system. The SSI monitoring routine explored in this study is uncertain. Methods must be developed further to obtain reliable data.

Abdominoperineal Resection, Pelvic Exenteration, and Additional Organ Resection Increase the Risk of Surgical Site Infection after Elective Colorectal Surgery: An American College of Surgeons National Surgical Quality Improvement Program Analysis.

Determining predictors of surgical site infection (SSI) in a large cohort is important for the design of accurate SSI surveillance programs. We hypothesized that additional organ resection and pelvic exenterative procedures are associated independently with a higher risk of SSI. Patients in the American College of Surgeons National Surgical Quality Improvement Program® (ACS NSQIP®; American College of Surgeons, Chicago, IL) database (2005-2012) were identified (n=112,282). Surgical site infection (superficial or deep SSI) at 30 d was the primary outcome. Using primary and secondary CPT® codes (American Medical Association, Chicago, IL) pelvic exenteration was defined and additional organ resection was defined as: bladder resection/repair, hysterectomy, partial vaginectomy, additional segmental colectomy, small bowel, gastric, or diaphragm resection. Univariable analysis of patient and procedure factors identified significant (p<0.05) predictors, which were modeled using stepwise logistic regression. The rate of SSI was 9.2%. After adjusting for operative duration, predictors of SSI were body mass index (BMI) 25-29.9 (odds ratio [OR]: 1.3), BMI 30-34.9 (OR: 1.59), BMI 35-39.9 (OR: 2.11), BMI>40 (OR: 2.51), pulmonary comorbidities (OR: 1.22), smoking (OR: 1.24), bowel obstruction (OR: 1.40), wound classification 3 or 4 (OR: 1.18), and abdominoperineal resection (OR: 1.58). Laparoscopic or laparoscopically assisted procedures offered a protective effect against incision infection (OR: 0.55). Additional organ resection (OR: 1.08) was also associated independently with SSI, but the magnitude of the effect was decreased after accounting for operative duration. In the analysis that excludes operative duration, pelvic exenteration is associated with SSI (OR: 1.38), but incorporating operative duration into the model results in this variable becoming non-significant. In addition to other factors, obesity, surgery for bowel obstruction, abdominoperineal resection, and additional organ resection are independently associated with a higher risk of SSI. Surgical site infection risk in pelvic exenteration and multiple organ resection cases appears to be mediated by prolonged operative duration. In these established high-risk sub-groups of patients, aggressive interventions to prevent SSI should be implemented.

Surveillance Method for Surgical Site Infection

Surgical Site Infection (SSI) is the third most commonly reported Nosocomial infection and accounts for 14–16% of all Nosocomial infections among hospital inpatients. The morbidity, mortality and the cost to health services of surgical site infections is huge. In addition, many workers have shown that feedback of appropriate data to surgeons has been an indispensable component of strategies to reduce SSI rates. The elements essential for a successful programmed of prevention of SSIs include intensive surveillance, infection control activities and regular feedback of SSI rates to surgeons. Surveillance with information feedback to surgeons and other medical staff has been shown to be an important element in the overall strategy to reduce the numbers of SSIs. Despite the apparent effectiveness in lowering SSI rates when surgeons receive feedback, however, there has been no consensus on which surveillance methods are best for collecting data on SSIs. A successful SSI surveillance program should include standardized definitions of infection, effective surveillance methods and stratification of the SSI rates according to risk factors associated with the development of SSI. For many years wound contamination class was the only factor that was well described for predicting the risk for SSI. During the Study on the Efficacy of Nosocomial Infection Control (SENIC) Project, an index was developed that provided a better assessment of the risk of SSIs than had the traditional wound classification system. In 1991, a modification of the SENIC risk index by Culver et al. led to the National Nosocomial Infections Surveillance (NNIS) System risk index. This review examines the best surveillance method for surgical site infection.

Thirteen years of surgical site infection surveillance in Swiss hospitals

Surveillance is an essential element of surgical site infection (SSI) prevention. Few studies have evaluated the long-term effect of these programmes. To present data from a 13-year multicentre SSI surveillance programme from western and southern Switzerland. Surveillance with post-discharge follow-up was performed according to the US National Nosocomial Infections Surveillance (NNIS) system methods. SSI rates were calculated for each surveyed type of surgery, overall and by year of participation in the programme. Risk factors for SSI and the effect of surveillance time on SSI rates were analysed by multiple logistic regression. Overall SSI rates were 18.2% after 7411 colectomies, 6.4% after 6383 appendicectomies, 2.3% after 7411 cholecystectomies, 1.7% after 9933 herniorrhaphies, 1.6% after 6341 hip arthroplasties, and 1.3% after 3667 knee arthroplasties. The frequency of SSI detected after discharge varied between 21% for colectomy and 94% for knee arthroplasty. Independent risk factors for SSI differed between operations. The NNIS risk index was predictive of SSI in gastrointestinal surgery only. Laparoscopic technique was protective overall, but associated with higher rates of organ-space infections after appendicectomy. The duration of participation in the surveillance programme was not associated with a decreased SSI rate for any of the included procedure. These data confirm the effect of post-discharge surveillance on SSI rates and the protective effect of laparoscopy. There is a need to establish alternative case-mix adjustment methods. In contrast to other European programmes, no positive impact of surveillance duration on SSI rates was observed.

The Italian national surgical site infection surveillance programme and its positive impact, 2009 to 2011.

Programmes surveying surgical site infection (SSI) have been implemented throughout the world and are associated with a reduction in SSI rates. We report data on non-prosthetic surgery from the Italian SSI surveillance programme for the period 2009 to 2011. Participation in the programme was voluntary. We evaluated the occurrence of SSI, based on protocols from the European Centre for Disease Prevention and Control, within 30 days of surgery. Demographic data, risk factors, type of surgery and presence of SSI were recorded. The National Coordinating Centre analysed the pooled data. On 355 surgical wards 60,460 operations were recorded, with the number of surveyed intervention doubling over the study period. SSI was observed in 1,628 cases (2,6%) and 60% of SSI were diagnosed through 30-days post discharge surveillance. Operations performed in hospitals with at least two years of surveillance showed a 29% lower risk of SSI. Longer intervention duration, American Society of Anesthesiologists’ (ASA) score of at least three, and pre-surgery hospital stay of at least two days were associated with increased risk of SSI, while videoscopic procedures had reduced SSI rates. Implementation of a national surveillance programme was helpful in reducing SSI rates and should be prioritised in all healthcare systems.

The provision of infection prevention and control services in the public health sector in New Zealand

Infection prevention and control services are well established within publically funded hospitals within New Zealand. In 2007, the Ministry of Health Quality Improvement Committee developed a set of National Quality Improvement Programs including an Infection Prevention and Control project. This project, the implementation of a national hand hygiene program, provision of guidance to reduce central line associated bacteraemia and recommendations for a national surgical site infection surveillance program, was the first nationally coordinated infection prevention and control program. More recently the Health Quality and Safety Commission has been established and the responsibility of the program delivery shifted to the Commission. District Health Boards have agreed to participate in the programs and the recently introduced Quality and Safety Markers will track the progress of these programs. Ongoing committed to increasing the workforce capacity and capability is required to ensure the successful delivery of these programs.

Incidence and Risk Factors for Surgical Site Infection after Gastric Surgery: A Multicenter Prospective Cohort Study

BackgroundSurgical site infection (SSI) is a potentially morbid and costly complication of surgery. While gastrointestinal surgery is relatively common in Korea, few studies have evaluated SSI in the context of gastric surgery. Thus, we performed a prospective cohort study to determine the incidence and risk factors of SSI in Korean patients undergoing gastric surgery.Materials and MethodsA prospective cohort study of 2,091 patients who underwent gastric surgery was performed in 10 hospitals with more than 500 beds (nine tertiary hospitals and one secondary hospital). Patients were recruited from an SSI surveillance program between June 1, 2010, and August 31, 2011 and followed up for 1 month after the operation. The criteria used to define SSI and a patient's risk index category were established according to the Centers for Disease Control and Prevention and the National Nosocomial Infection Surveillance System. We collected demographic data and potential perioperative risk factors including type and duration of the operation and physical status score in patients who developed SSIs based on a previous study protocol.ResultsA total of 71 SSIs (3.3%) were identified, with hospital rates varying from 0.0 - 15.7%. The results of multivariate analyses indicated that prolonged operation time (P = 0.002), use of a razor for preoperative hair removal (P = 0.010), and absence of laminar flow in the operating room (P = 0.024) were independent risk factors for SSI after gastric surgery.ConclusionsLonger operation times, razor use, and absence of laminar flow in operating rooms were independently associated with significant increased SSI risk after gastric surgery.

Surgical site infection surveillance: a Scottish perspective (2003–2010)

Health Protection Scotland facilitates national surveillance of surgical site infection (SSI) in Scotland with all hospitals participating in the SSI programme. For the period January 2003 to December 2010, there were 1883 inpatient SSIs, resulting from 192,007 procedures in the selected surgical categories. The inpatient SSI incidence density rates in Scotland over the duration of the SSI surveillance programme (2003–2010) showed a reduction over the eight years of surveillance for all procedures, with a significant reduction in caesarean section, hip arthroplasty, knee arthroplasty, and open reduction of long bone fracture. For all procedures, the highest proportion of SSIs detected were superficial. Data from Scotland includes information on infections occurring post-discharge from hospitals, which is an increasingly important aspect of monitoring, as length of stay in hospital is reducing over time. The introduction of readmission surveillance until day 30 post-operatively for hip arthroplasty in 2007 and post-discharge surveillance (PDS) to day 10 for caesarean section in 2009 has resulted in a higher proportion of SSIs being detected following discharge from hospital.

Impact of a surgical site infection (SSI) surveillance program in orthopedics and traumatology

Surveillance of surgical site infections (SSI) is a priority. One of the fundamental principles for the surveillance of SSI is based on receiving effective field feedback (retro-information). The aim of this study was to report the results of a program of SSI surveillance and validate the hypothesis that there is a correlation between creating a SSI surveillance program and a reduction in SSI. The protocol was based on the weekly collection of surveillance data obtained directly from the different information systems in different departments. A delay of 3 months was established before extraction and analysis of data and information from the surgical teams. The NNIS index (National Nosocomial Infections Surveillance System) developed by the American surveillance system and the reduction of length of hospital stay index Journées d'hospitalisation évitées (JHE). Since the end of 2009, 7156 surgical procedures were evaluated (rate of inclusion 97.3%), and 84 SSI were registered with a significant decrease over time from 1.86% to 0.66%. A total of 418 days of hospitalization have been saved since the beginning of the surveillance system. Our surveillance system has three strong points: follow-up is continuous, specifically adapted to orthopedic traumatology and nearly exhaustive. The extraction of data directly from hospital information systems effectively improves the collection of data on surgical procedures. The implementation of a SSI surveillance protocol reduces SSI. Level III. Prospective study.

Improving Awareness of Best Practices to Reduce Surgical Site Infection

Surgical site infection (SSI) is recognized as a focus area by the Centers for Medicare and Medicaid Services, the Joint Commission, the Institute for Healthcare Improvement, and the Institute of Medicine. An estimated 47% to 84% of SSIs present after discharge from the hospital or ambulatory care facility and, as a result, go undetected by standard SSI surveillance programs. Evidence-based processes and practices that are known to reduce the incidence of SSIs tend to be underused in routine practice. This article describes a multistakeholder process used to develop an educational initiative to raise awareness of best practices to reduce SSIs. The goal was to create a patient-centric educational initiative that involved an active partnership among all stakeholders-medical professional organizations, hospitals/health systems, health insurers, employers and other purchasers, and consumers/patients-to provide the climate necessary to create and sustain a culture of safety.

Laparoscope Use and Surgical Site Infections in Digestive Surgery

To compare surgical site infection (SSI) rates in open or laparoscopic appendectomy, cholecystectomy, and colon surgery. To investigate the effect of laparoscopy on SSI in these interventions. Lower rates of SSI have been reported among various advantages associated with laparoscopy when compared with open surgery, particularly in cholecystectomy. However, biases such as the lack of postdischarge follow-up and confounding factors might have contributed to the observed differences between the 2 techniques. This observational study was based on prospectively collected data from an SSI surveillance program in 8 Swiss hospitals between March 1998 and December 2004, including a standardized postdischarge follow-up. SSI rates were compared between laparoscopic and open interventions. Factors associated with SSI were identified by using logistic regression models to adjust for potential confounding factors. SSI rates in laparoscopic and open interventions were respectively 59/1051 (5.6%) versus 117/1417 (8.3%) in appendectomy (P = 0.01), 46/2606 (1.7%) versus 35/444 (7.9%) in cholecystectomy (P < 0.0001), and 35/311 (11.3%) versus 400/1781 (22.5%) in colon surgery (P < 0.0001). After adjustment, laparoscopic interventions were associated with a decreased risk for SSI: OR = 0.61 (95% CI 0.43-0.87) in appendectomy, 0.27 (0.16-0.43) in cholecystectomy, and 0.43 (0.29-0.63) in colon surgery. The observed effect of laparoscopic techniques was due to a reduction in the rates of incisional infections, rather than in those of organ/space infections. When feasible, a laparoscopic approach should be preferred over open surgery to lower the risks of SSI.

Procedure-Specific Surgical Site Infection Rates and Postdischarge Surveillance in Scotland

To investigate the impact of postdischarge surveillance (PDS) on surgical-site infection (SSI) rates for selected surgical procedures in acute care hospitals in Scotland. Prospective surveillance of SSI after selected surgical procedures. The Scottish Surveillance of Healthcare Associated Infection Programme (SSHAIP), which is based on the methodology of the Centers for Disease Control and Prevention (CDC) National Nosocomial Infections Surveillance system (NNIS). Thirty-two of 46 acute care hospitals throughout Scotland contributed data to SSHAIP for this study. Data were from 21,710 operations that took place between April 1, 2002, and June 30, 2004; nine categories of surgical procedures were analyzed. CDC NNIS system definitions and methods were used for SSI PDS. PDS is a voluntary component of the mandatory SSI surveillance program in Scotland. PDS was categorized as none, passive, active without direct observation, and active with direct observation. From our study information, PDS data were available for 12,885 operations (59%). A total of 2,793 procedures (13%) were associated with passive PDS and 10,092 (46%) with active PDS. The SSI rate among the 8,825 operations with no PDS was 2.61% (95% confidence interval [CI], 2.3%-3.0%), which was significantly lower than the SSI rate found among the 12,885 operations for which PDS was performed (6.34% [95% CI, 5.9%-6.8%]). For breast surgery, cesarean section, hip replacement, and abdominal hysterectomy, the rate of SSI when PDS was performed was significantly higher than that when PDS was not performed (P<.01 for each procedure). No differences in SSI rates were found for surgery to repair fractured neck of the femur or for knee replacement. SSI rates were examined according to procedure type, performance of PDS, and NNIS risk index; rates of SSI increased with NNIS risk index within procedure group and PDS group. Logistic regression analyses confirmed that procedure type, performance of PDS, and NNIS risk index were all statistically independent predictors of report of an SSI (P<.05). This Scottish national data set incorporates a substantial amount of PDS data. We recommend a procedure-specific approach to PDS, with direct observation of patients after breast surgery, cesarean section, and hysterectomy, for which the length of stay is typically short. Readmission surveillance may be adequate to detect most SSIs after orthopedic surgery or vascular surgery, for which the length of stay is typically longer.