Colorectal Surgical Site Infection Research Articles

SP5.2 - Reducing Elective Colorectal Surgical Site Infections with Change of Gloves and Instruments Prior to Abdominal Closure; A Multicycle Audit

Abstract Aims Surgical site infections (SSI) carry a significant impact on patient morbidity, length of stay and antibiotic resistance. Our local colorectal unit has made several interventions over many years with no significant nor sustained improvement in the rate of SSI. The ChEETAh trial (Lancet, 2022) demonstrated a reduction in the rate of 30-day SSI by 13% with routine change of gloves and instruments (COGI) prior to abdominal closure. We aim to reduce our rate of SSI through implementation of COGI prior to abdominal closure; involving whole scrub team change of gloves and use of sterile instruments. Methods Adults undergoing elective colorectal surgery with an abdominal wound greater than 5cm were eligible for this study. Diagnosis of SSI was made based on at least one clinical indicator of infection or at least one symptom of SSI with data collection over 3 cycles spanning 11 months using clinical notes, imaging and microbiology results. The primary outcome was the diagnosis of a SSI involving the skin, subcutaneous, muscle or fascial layer up to 30 days post-operatively. Results The baseline SSI rate prior to intervention was audited at 29%. After implementation of COGI the rate fell to 23%. Further reinforcement of COGI and team education has demonstrated a further decrease in SSI to 15%. This has been sustained across a 6-month period post intervention. Conclusions Change of gloves and instruments is an effective, reliable and sustainable method to reduce the rate of surgical site infection in elective colorectal abdominal surgery.

Microbiologic Evaluation of Colorectal Surgical Site Infections to Guide Surgical Prophylaxis Recommendations

Background: Use of a combination of parenteral and oral antimicrobial prophylaxis prior to colorectal surgery is recommended to reduce risk of surgical site infection (SSI). Parenteral antibiotic selection is complicated by the need to target organisms likely to cause infection at the surgery site, while mitigating risk of antimicrobial resistance caused by overuse of broad spectrum agents. This study aimed to evaluate microbiologic data from colorectal surgical site infections across an 11-hospital health system. Microbiologic data from SSI events were used to assess continued appropriateness of health system standard recommendations for parenteral antibiotic prophylaxis in colorectal surgery, consisting of either cefazolin with metronidazole or cefoxitin monotherapy. Methods: This multicenter, retrospective, observational study was conducted from January 1, 2019 to March 31, 2023, using data extracted from the National Healthcare Safety Network (NHSN). Microbiologic data from colorectal SSIs from 2019 to 2022 were evaluated for a descriptive review of pathogen and phenotype trends. SSI data excluded patients age < 18 years, those identified as infection present at time of surgery (PATOS), or outpatient procedures. Results: A total of 8059 colorectal procedures were evaluated. Most SSIs were polymicrobial, with at least one pathogen detected in 65% of cases. The most commonly identified organisms were E. coli (22.5%), Enterococcus spp. (19.7%), P. aeruginosa (6.5%), Streptococcus spp. (4.9%), and C. albicans (4.7%). Change over time in antimicrobial-resistant phenotypes from 2019 to 2022 was not statistically significant for extended-spectrum cephalosporin-resistant E. coli (p=0.335), extended-spectrum cephalosporin-resistant K. oxytoca/pneumoniae (p=0.189), multi-drug resistant P. aeruginosa (0.058), methicillin-resistant S. aureus (p=0.906), or among isolates with no identified antimicrobial-resistance phenotype (p=0.096). Among E. coli, change from 2019 to 2022 in cefazolin non-susceptible, ceftriaxone susceptible isolates was not statistically significant (p=0.177). No carbapenem-resistant Enterobacterales isolates were identified among non-PATOS cases. Conclusions: Data does not support a change to broader spectrum agents for colorectal surgery parenteral antimicrobial prophylaxis. Continued use of cefazolin with metronidazole or cefoxitin as IV antibiotic prophylaxis in colorectal surgery is recommended, with ongoing tracking of microbiologic trends and antimicrobial susceptibility.

Bundle Implementation to Prevent Surgical Site Infections - A Study of SRN Hospitals

Background: Guidelines recommend bundles with multiple infection control elements to prevent surgical site infections (SSI). Although effective in multiple research studies, little is known about the implementation of such complex bundles in the real-world clinical setting. Methods: A survey was distributed to the SHEA Research Network (SRN) hospitals during November 2022 – December 2023, to assess processes related to the implementation of SSI prevention bundles in colorectal surgery. Results: Of the 93 US and international hospitals within SRN, 49 completed the survey (53% response rate). The mean volume of colorectal surgeries per year was 377 (median 400). Figure 1 shows the individual elements of SSI prevention bundle reported as consistently used in most surgeries. There were no significant differences between hospitals with high vs. low volume (cut-off 400 surgeries), except for wound protectors or retractors, more likely to be used in high-volume hospitals (P = 0.047). A formal process for auditing adherence was reported by 71% of respondents for antibiotic prophylaxis, and 51% for skin prep, with the remaining elements audited < 50% of the time. Feedback of audited adherence to surgeons occurred < 50% of the time for all bundle elements, except antibiotic prophylaxis (59%). Table 1 shows the most common barriers reported as either successfully mitigated or still persistent at the time of the survey. High-volume hospitals were more likely to report persistent clinicians’ low bundle adherence (P = 0.016) and inadequate bundle adherence audit and feedback (P = 0.0016). Conclusion: Implementation of guideline-recommended colorectal SSI Prevention bundles remains highly variable. Further research aiming to develop strategies that optimize implementation and adherence is needed.

Surgical Site Infection Prevention Using "Strike Teams": The Experience of an Academic Colorectal Surgical Department.

Surgical site infections (SSIs) are healthcare-acquired infections with substantial morbidity. Surgical site infection persist because of low adherence to prevention bundles comprising multiple infection control elements. We propose the "Strike Team" as an implementation strategy to improve adherence and reduce SSI in colorectal surgery. At an academic medical center, a multidisciplinary Strike Team met monthly to review colorectal SSI cases, audit and discuss barriers to adherence to SSI prevention bundle, and propose actionable feedback. The latter was shared with frontline clinicians by the Strike Team's surgical leaders in everyday practice. Colorectal SSI rates and bundle adherence data were disseminated quarterly via the hospital intranet and reviewed with surgeons at departmental meetings. Trends in adherence and SSI rates were analyzed by regression analysis using a time series model. While the Strike Team was active, adherence to antibiotic prophylaxis, maintenance of normoglycemia, and standardized intraoperative skin preparation significantly increased (p < .05). There was a trend toward statistically significant reduction in SSI (p = .07), although it was not maintained once the Strike Team activity was disrupted by the COVID-19 pandemic. Colorectal SSI prevention requires a resource-intensive, multidisciplinary approach with numerous strategies to improve adherence to infection control bundles, as illustrated by our SSI Strike Team experience.

1471. Identifying Modifiable Risk Factors for Colorectal Surgical Site Infections at a Large Safety Net Hospital: A Case-Control Study

Abstract Background Colorectal surgical site infection (SSIs) rates have been reported to be from 10%-30% and significantly contribute to patient morbidity, mortality, and healthcare costs. High safety-net burden has been shown to be associated with increased risk of SSI, but to our knowledge, modifiable risk factors for colorectal surgery (CRS) have not been investigated in this setting. Deep and organ space infection rate at Parkland Health, a safety-net hospital in Dallas County, was 3.7% in 2021 3.6% in 2022. We aim to identify modifiable risk factors for colorectal SSI at our safety net hospital. Methods This is a retrospective case-control study in which patients who had a deep or organ space SSI after CRS from 01/2018 to 05/2022 were randomly matched 1:3 by month. A total of 100 cases and 300 controls were studied. Data was extracted for 69 variables. All variables achieving p &amp;lt; 0.1 in univariate analysis were included in a multivariate logistic regression analysis.Table 1:Modifiable Risk Factors. Factors regarding demographic history, medical history, intraoperative management, pre-operative management, and post-operative management were extracted and analyzed. Results Univariate analysis was significant for: BMI18.5 - 24.9 (OR, 0.495; 95% CI, 0.274-0.895; p= 0.022) , age 40 to 49 (OR, 0.528; 95% CI, 0.287-0.970; p=0.039), early mobility (OR, 0.420; 95% CI, 0.236-0.747; p=0.003), immunosuppression (OR, 4.093; 95% CI, 1.642-10.202; p=0.003), NSQIP score of 2 (OR, 1.848; 95% CI, 1.147-2.977; p=0.016), serum glucose 200-250 (OR, 2.228; 95% CI, 1.130-4.393; p=0.032), and age 20 to 29 (OR, 2.306; 95% CI, 1.060-5.019; p=0.043). Early mobility was significant with multivariate logistic regression analysis (OR, 0.3; 95% CI, 0.14-0.66; p=0.0027).Figure 1.Univariate Significance Analysis of Extracted Variables The protective factors against developing an SSI were age between 40-49, BMI between 18.5-24.5, and early mobility. The risk factors that were associated with developing an SSI were age between 20 and 29, blood glucose level between 200 mg/dL and 250 mg/dL, NSQIP score of 2, immunosuppression.Table 2.Statistical Information about Significant Variables Seven variables were found to be significant after the completion of univariate analysis. Initial multivariate analysis indicates that early mobility may be significant with a p-value of 0.0027. Conclusion Early mobility in the form of out of bed to chair for all meals (3 times in a day) on post-operative day one is protective against SSI occurrence. While risk factors for SSIs post-colorectal surgery have been discussed in the literature, there has not been a study conducted in a large safety net hospital that already follows the National Surgical Quality Improvement Program recommended guidelines. We were able to assess the independent importance of different variables from practice guidelines as potential risk factors in a large, diverse, safety net hospital. We engaged our surgeons and OR nursing staff in a multidisciplinary effort to optimize early mobility to reduce SSI risk. Disclosures All Authors: No reported disclosures

The Role of Patient Engagement in Surgical Site Infection Reduction: A Process Improvement Project.

Surgical site infections (SSIs) are the second most common healthcare-associated infection, with prevention being a high-priority goal for all healthcare organizations. Although routine surveillance and standardized prevention protocols have long been used, patient engagement is an additional intervention that should be considered and may be beneficial in SSI prevention. To determine if the development of a standardized patient education discharge plan for management of a surgical site and/or surgical drain would contribute to a reduction in SSI rates in inpatients undergoing colorectal, plastic, or general surgery. A preintervention/postintervention design was used. Before intervention, patients and surgeons were surveyed regarding various discharge practices related to surgical incision/drain care. The intervention consisted of implementing a standardized discharge plan including standardized education and patient discharge kits. After implementation, patients were surveyed regarding discharge practices. Patient survey responses and SSI rates were compared between the preintervention and postintervention time frames. Rates of SSIs decreased across all three surgical specialties during the project period: colorectal SSIs decreased from 3.2% to 2.7%, plastics from 1.2% to 0.5%, and general from 0.86% to 0.33%. Improvements were also realized in patient survey responses to various aspects of surgical incision/drain care. Patient engagement may be an important strategy to integrate with SSI evidence-based care bundles. Active engagement of surgical patients perioperatively has the potential to improve the patient experience, which ultimately can result in improved healthcare outcomes for this population.

Implementation of a Colorectal Surgical Site Infection Prevention Bundle and Checklist: A Quality Improvement Project.

After noting an elevated surgical site infection rate in 2019 associated with colorectal surgeries, leaders at two Central Virginia health system hospitals convened an interdisciplinary team to audit current practices and research infection prevention strategies. After identifying a lack of standardization in care processes for colorectal surgery patients and reviewing the literature on colorectal bundles, the team created a bundle focusing on the use of antibiotics, chlorhexidine gluconate wipes or baths, separate closing instrument trays, nasal decolonization, bowel preparation, and maintaining patient normothermia. After synthesis and stakeholder input, the team implemented the colorectal bundle along with a checklist for all users to complete to ensure compliance and standardization of practice and for auditing purposes. Implementation results were positive: the total number of colorectal infections decreased from nine in 2020 to three in 2021. Education was critical to securing staff member engagement for successful implementation of and compliance with the bundle.

Standardized perioperative care reduces colorectal surgical site infection in children: A Western Pediatric Surgery Research Consortium multicenter analysis

PurposeSurgical site infection (SSI) remains a significant source of patient morbidity and resource utilization in children undergoing colorectal surgery. We examined the utility of a protocolized perioperative care bundle in reducing SSI in pediatric patients undergoing colorectal surgery. MethodsWe conducted a prospective cohort study of patients ≤18 years of age undergoing colorectal surgery at ten United States children's hospitals. Using a perioperative care protocol comprising eight elements, or “colon bundle”, we divided patients into low (1–4 elements) or high (5–8 elements) compliance cohorts. Procedures involving colorectal repair or anastomosis with abdominal closure were included. Demographics and clinical outcomes were compared between low and high compliance cohorts. Compliance was compared with a retrospective cohort. The primary outcome was superficial SSI incidence at 30 days. ResultsThree hundred and thirty-six patients were included in our analysis: 138 from the low compliance cohort and 198 from the high compliance cohort. Age and gender were similar between groups. Preoperative diagnosis was similar except for more patients in the high compliance cohort having inflammatory bowel disease (18.2% versus 5.8%, p<0.01). The most common procedure performed was small bowel to colorectal anastomosis. Wound classification and procedure acuity were similar between groups. Superficial SSI at 30 days occurred less frequently among the high compliance compared to the low compliance cohort (4% versus 9.7%, p = 0.036). Median postoperative length of stay and 30-day rates of readmission, reoperation, intra-abdominal abscess and anastomotic leak requiring operation were not significantly different between groups. None of the individual colon bundle elements were independently protective against superficial SSI. ConclusionStandardization of perioperative care is associated with a reduction in superficial SSI in pediatric colorectal surgery. Expansion of standardized protocols for children undergoing colorectal surgery may improve outcomes and decrease perioperative morbidity. Type of StudyClinical Research Paper Level of EvidenceLevel II

Incision pressing, a simple and effective intervention to reduce colorectal surgical site infection: A propensity score-matched study

BackgroundColorectal surgery is associated with a high risk of surgical site infection (SSI). In March 2017, we developed an intervention, called “PRESS”, with the aim of reducing colorectal superficial SSI. This study assessed the effect of the new intervention in reducing the rates of superficial SSI in colorectal surgery.MethodsThis study was a retrospective review of 312 PRESS+ patients compared to 171 historical control PRESS− patients who were 18 years of age or older and underwent elective colorectal surgery with clean-contaminated wounds from January 2015 to June 2020. In the PRESS+ groups, we pressed the incision downward hard with clean gauze after the interrupted suturing of the skin. Propensity score matching with 15 variables was performed in a 1:1 ratio to reduce selection bias. Univariate analysis and multivariate analysis were performed to identify risk factors associated with SSI.ResultsThe characteristics of the PRESS+ (n = 160) and PRESS− (n = 160) groups were well balanced after propensity score matching. The PRESS+ group had a lower superficial SSI rate (1.9% vs. 6.9%, P = 0.029) and a lower overall SSI rate (2.5% vs. 10.0%, P = 0.006) than the PRESS− group. Furthermore, multivariate analysis showed that the incisional press was an effective protective factor for superficial SSI (adjusted odds ratio = 0.215, 95% confidence interval = 0.057–0.818, P = 0.024). In addition, female sex (P = 0.048) and blood transfusion (P = 0.011) were demonstrated to be independent risk factors for superficial SSI.ConclusionThe incisional press after suturing is a simple, costless, and effective intervention in reducing superficial incisional SSI.

Unbundling Bundles: Evaluating the Association of Individual Colorectal Surgical Site Infection Reduction Bundle Elements on Infection Rates in a Statewide Collaborative.

Surgical site infection reduction bundles are effective but can be complex and resource intensive. Understanding which bundle elements are associated with reduced surgical site infections may guide concise bundle implementation. The purpose of this study was to evaluate the association of individual surgical site infection reduction bundle elements with infection rates. This was a post-hoc analysis of a prospective cohort study. This study took place at Illinois Surgical Quality Improvement Collaborative hospitals. Patients who had elective colorectal resections at participating hospitals from 2016 to 2017. The intervention was a 16-element colorectal surgical site infection reduction bundle. Surgical site infection rates were compared among patients by adherence with each bundle element using χ 2 tests and multivariable logistic regression. Principal component analysis identified composites of correlated bundle elements. Coincidence analysis identified combinations of bundle elements or principal component composites associated with the absence of surgical site infection. Among 2722 patients, 192 (7.1%) developed a surgical site infection. Infections were less likely when oral antibiotics (OR 0.63 [95% CI 0.41-0.97]), wound protectors (OR 0.55 [95% CI 0.37-0.81]), and occlusive dressings (OR 0.71 [95% CI 0.51-1.00]) were used. Bundle elements were reduced into 5 principal component composites. Adherence with the combination of oral antibiotics, wound protector, or redosing intravenous antibiotic prophylaxis plus chlorhexidine-alcohol intraoperative skin preparation was associated with the absence of infection (consistency = 0.94, coverage = 0.96). Four of the 5 principal component composites in various combinations were associated with the absence of surgical site infection, whereas the composite consisting of occlusive dressing placement, postoperative dressing removal, and daily postoperative chlorhexidine incisional cleansing had no association with the outcome. The inclusion of hospitals engaged in quality improvement initiatives may limit the generalizability of these data. Bundle elements had varying association with infection reduction. Implementation of colorectal surgical site infection reduction bundles should focus on the specific elements associated with low surgical site infections. See Video Abstract at http://links.lww.com/DCR/B808 . ANTECEDENTES:Los paquetes de reducción de infecciones del sitio quirúrgico son efectivos pero pueden ser complejos y requieren muchos recursos. Comprender qué elementos del paquete están asociados con la reducción de las infecciones del sitio quirúrgico puede guiar la implementación concisa del paquete.OBJETIVO:Evaluar la asociación de los elementos individuales del paquete de reducción de infecciones del sitio quirúrgico con las tasas de infección.DISEÑO:Análisis post-hoc de un estudio de cohorte prospectivo.ESCENARIO:Hospitales colaborativos para la mejora de la calidad quirúrgica de Illinois.PACIENTES:Resecciones colorrectales electivas en los hospitales participantes entre 2016 y 2017.INTERVENCIONES:Paquete de reducción de infección del sitio quirúrgico colorrectal de 16 elementos.PRINCIPALES MEDIDAS DE RESULTADO:Se compararon las tasas de infección del sitio quirúrgico entre los pacientes según la adherencia con cada elemento del paquete mediante pruebas de Chi cuadrado y regresión logística multivariable. El análisis de componentes principales identificó compuestos de elementos de paquete correlacionados. El análisis de coincidencia identificó combinaciones de elementos del haz o compuestos de componentes principales asociados con la ausencia de infección del sitio quirúrgico.RESULTADOS:Entre 2722 pacientes, 192 (7,1%) desarrollaron una infección del sitio quirúrgico. Las infecciones fueron menos probables cuando se administraron antibióticos orales (OR 0,63 (IC 95% 0,41-0,97)), protectores de heridas (OR 0,55 (IC 95% 0,37-0,81)) y vendajes oclusivos (OR 0.71 (IC 95% 0,51-1,00]) fueron usados. Los elementos del paquete se redujeron a 5 grupos de componentes principales. La adherencia a la combinación de (1) antibióticos orales, (2) protector de heridas o (3) redosificación de profilaxis antibiótica intravenosa más preparación de la piel intraoperatoria con clorhexidina-alcohol se asoció con la ausencia de infección (consistencia = 0,94, cobertura = 0,96). Cuatro de los cinco grupos de componentes principales en varias combinaciones se asociaron con la ausencia de infección del sitio quirúrgico, mientras que el grupo que consiste en la colocación del apósito oclusivo, la remosión del apósito en posoperatorio y la limpieza incisional posoperatoria diaria con clorhexidina no tuvo asociación con el resultado.LIMITACIONES:La inclusión de hospitales que participan en iniciativas de mejora de la calidad puede limitar la generalización de estos datos.CONCLUSIONES:Los elementos del paquete tuvieron una asociación variable con la reducción de la infección. La implementación de paquetes de reducción de infecciones del sitio quirúrgico colorrectal debe centrarse en los elementos específicos asociados con pocas infecciones del sitio quirúrgico. Consulte Video Resumen en http://links.lww.com/DCR/B808 . (Traducción-Juan Carlos Reyes ).

Compliance to infection-preventing measures in colorectal surgery – a word of caution

Abstract Objective The success of a colorectal surgical site infection (SSI) preventing bundle is dependent on compliance to individual infection-preventing measures. The present study aimed to assess whether challenging circumstances may affect bundle compliance. Methods Retrospective analysis including consecutive patients undergoing colorectal surgery and appendectomy between November 2018 and October 2020, after implementation of an evidence-based SSI-preventing care bundle. Bundle items were antibiotic administration, disinfection, core temperature control, glove change, intra-abdominal lavage and drain placement according to pre-defined standards. Compliance to each item was assessed according to surgical duration, patient age and time of surgery. Results Over the study period, 463 patients underwent appendectomy, 458 patients colonic surgery and 98 patients rectal resections. Compliance to intraabdominal lavage standards decreased significantly with surgical duration of colonic resections (88% for surgeries lasting &amp;lt;90 minutes vs. 56% for surgeries lasting &amp;gt; 180 minutes), while similar decreasing compliance patterns were observed regarding intraabdominal drain placement (86% vs. 68%) and core temperature control (64% vs. 57%, all p&amp;gt;0.05) with long lasting procedures. Compliance to antibiotic timing and glove change recommendations was higher in patients undergoing day-time colectomies (08 h and 16 h) compared to patients operated on during night shifts (0h-08 h, 93% vs. 69% and 87% vs. 58%, respectively, both p&amp;lt;0.05). Specific compliance patterns were not observed in patients undergoing appendectomy or rectal surgery. Furthermore, patient age had no impact on bundle compliance. Conclusion The present study revealed decreasing compliance to several infection-preventing bundle items with increasing surgical duration and during night shifts. This may contribute to worse outcomes in these challenging settings but may be a point of attention that can be corrected.

The Strike Team as an implementation strategy for surgical infection prevention

Background: Surgical site infections (SSIs) incur up to $10 billion annually due to their excessive morbidity. SSI prevention bundles have had variable success in colorectal surgery. For example, at the University of Wisconsin Hospital, a 505-bed regional referral center, SSI rates have remained high despite the introduction of a 14-element SSI prevention bundle in 2016. To aid in the implementation of this complex bundle, the hospital started Strike Teams in 2019. We have described the impact of Strike Teams on colorectal SSI rates in our tertiary-care hospital. Methods: A Strike Team with key stakeholders from colorectal surgery (ie, surgeon, OR director, nurses, surgical technicians), anesthesia, pharmacy, infection prevention, and infectious disease was formed, supported by the hospital’s executive leadership. The Strike Team met monthly throughout 2019 to review each SSI case, discussed barriers to adherence for the SSI prevention bundle elements with implementation difficulties (Table 1), and proposed actionable feedback to increase adherence. The latter was disseminated to frontline clinicians by the teams’ surgical leaders during everyday clinical practice. The Strike Team was paused in 2020 due to resource reallocation in response to the COVID-19 pandemic. Monthly and quarterly SSI surveillance was conducted according to CDC guidance. Results: Colorectal SSI rates before, after, and during Strike Team activity are shown in Fig. 1. Adherence rates to the bundle elements targeted by the Strike Team are shown in Fig. 2. Conclusions: Adherence to the preferred antibiotic prophylaxis increased, although adherence to other bundle elements of focus did not change significantly. SSI rates decreased below our expectation while the Strike Team was active in our hospital, although SSI reduction was not sustained. Further research should study the effectiveness of Strike Teams as a long-term implementation strategy for SSI prevention in colorectal surgery.Funding: NoneDisclosures: None

Risk adjustment performance between NNIS index and NHSN model for postoperative colorectal surgical site infection: A retrospective cohort study

BackgroundRisk stratifications to predict development of surgical site infections (SSI) are crucial methods before surgery. Hence, we aimed to compare the performance of risk adjustment between the former NNIS risk index and the new NHSN procedure-specific risk model for postoperative colorectal SSI. Materials and methodsA retrospective cohort study was conducted. Data of post-colorectal SSI, indicating the use of the NNIS risk index for SSI adjustment, were retrieved from the medical records. Data were taken from patients who underwent colorectal surgery procedures between January 2005 and December 2016. Additional information regarding emergency colorectal surgery was retrieved to fulfill the requirements for calculation of the risks for SSI; via the new model. The predictive performance between the two models was compared using the means of the area under the receiver operating characteristic curve. ResultsIn total 1989 patients were included. Fifteen patients were excluded; thus, the remaining number of procedures was 1974. Surgical site infections occurred in 85 (4.3%) procedures. In colectomy surgery, the means of area under the curve (AUC) yielded 0.6196 and 0.5976 for the NNIS risk index model and the new NHSN risk model, respectively; differences in the AUC were not statistically significant (p = 0.39). In rectal surgery, the means of the AUC yielded 0.516 and 0.49 for the NNIS risk index model and the new NHSN procedure-specific risk model, respectively; differences in the AUC were not statistically significant (p = 0.56). ConclusionThe new NHSN procedure-specific risk model was not superior to the former NNIS risk index.

Association between Patient and Hospital Characteristics and Adherence to a Surgical Site Infection Reduction Bundle in a Statewide Surgical Quality Improvement Collaborative.

Adherence to bundled interventions can reduce surgical site infection (SSI) rates; however, predictors of successful implementation are poorly characterized. We studied the association of patient and hospital characteristics with adherence to a colorectal SSI reduction bundle across a statewide surgical collaborative. A 16-component colorectal SSI reduction bundle was introduced in 2016 across a statewide quality improvement collaborative. Bundle adherence was measured for patients who underwent colorectal operations at participating institutions. Multivariable mixed-effects logistic regression models were constructed to estimate associations of patient and hospital factors with bundle adherence and quantify sources of variation. Among 2,403 patients at 35 hospitals, a median of 11 of 16 (68.8%, interquartile range 8 to 13) bundle elements were completed. The likelihood of completing 11 or more elements was increased for obese patients (56.8% vs 51.5%, odds ratio [OR] 1.39, 95% CI 1.05 to 1.86, p = 0.022) but reduced for underweight patients (31.0% vs 51.5%, OR 0.51, 95% CI 0.26 to 1.00, p = 0.048) compared with patients with a normal BMI. Lower adherence was noted for patients treated at safety net hospitals (n = 9 hospitals, 24.4% vs 54.4%, OR 0.08, 95% CI 0.01 to 0.44, p = 0.004). The largest proportion of adherence variation was attributable to hospital factors for six bundle elements, surgeon factors for no elements, and patient factors for nine elements. Adherence to an SSI reduction bundle is associated with patient BMI and hospital safety net status. Quality improvement groups should consider institutional traits for optimal implementation of SSI bundles. Safety net hospitals may require additional focus to overcome unique implementation barriers.

Oncologic colorectal surgical site infection: oral or not oral antibiotic preparation, that is the question.

Surgical wound infection is the most frequent postoperative complication in abdominal surgery, especially at the colorectal level. The aim of this study is analysing the results of mechanical colon preparation combined with oral antibiotic versus mechanical colon preparation without antibiotic therapy in patients with colorectal cancer undergoing elective surgery. This retrospective cohort study had been developed from November 2017 to February 2020. We have included a total of 281 consecutive patients undergoing elective colon and rectal oncological surgeries by the same surgical group using laparoscopic and open approaches. Transanal minimally invasive surgery (TAMIS) and transanal total mesorectal excision (TaTME) approaches were excluded. Exposed patients undergoing colon and rectal cancer surgery received mechanical bowel preparation and oral antibiotics with three doses of neomycin 1g and erythromycin 500mg the day before surgery. The primary outcome was reduction in surgical wound infection rates before and after starting the oral antibiotic therapy from 17 to 6% (p < 0.05). As a secondary analysis, we evaluated the anastomotic dehiscence rate, corresponding with a decrease from 12 to 3% (p < 0.05). Mechanical bowel preparation combined with oral antibiotic therapy is still not unanimously carried out in all the medical hospitals. In this report, we show that mechanical bowel preparation in combination with oral antibiotic reduces the risk of surgical wound infection and anastomotic leakage in patients undergoing colon and rectal cancer surgery.

Colorectal surgery surgical site infection prevention practices in British Columbia.

SummarySurgical site infections (SSI) pose significant morbidity after colorectal surgery. We sought to document current practices in colorectal surgery SSI prevention in British Columbia (BC). Reporting the current provincial landscape on SSI prevention helps to understand the foundation upon which improvements can take place. We surveyed all BC surgeons performing elective colon and rectal resections, and 97 surveys were completed (60% response rate). Eighty-six per cent of respondent hospitals tracked SSI rates. The reported superficial SSI was less than 5% and the anastomotic leak/organ space rate was less than 10%. All respondents gave preoperative prophylactic antibiotics, with 24% continuing antibiotics postoperatively; 62% are using oral antibiotics (OAB) and mechanical bowel preparation (MBP) and 29% use MBP without OAB. Areas for improvement include OAB with MBP and discontinuing prophylactic antibiotics postoperatively, as recommended by the World Health Organization.

A Randomized Controlled Trial of Negative Pressure Wound Therapy to Reduce Colorectal Surgical Site Infection

Background: The rate of surgical site infection (SSI) in clean-contaminated wounds resulting from elective colorectal procedures ranges from 15 to 30%. Within the region considered in the study, the SSI rate is 20% despite the adoption of preventative measures. Objective: The objective of this study was to determine the effectiveness of prophylactic negative pressure wound therapy (NPWT) in reducing superficial SSIs in clean-contaminated wounds resulting from elective colorectal surgery to below 10%. Design: An unblinded randomized controlled trial was conducted. Settings: The study was conducted at two Canadian tertiary academic hospitals. Patients and Methods: Patients undergoing elective, non-emergent, clean-contaminated colorectal resection by both laparoscopic and open procedures were included. Participants were randomized to either standard surgical dressing (SSD) or NPWT over a closed incision. Main Outcome Measures: Incidence of superficial SSI on postoperative day 30. Results: The study closed early due to lack of accrual. From the planned group of 398 patients, 126 were randomly assigned to SSD (n = 61) or NPWT (n = 61). The analysis included 55 patients from the SSD group and 47 from the NPWT group. The mean age for the groups was 64.9 years (SSD) and 65.1 years (NPWT) with males comprising 52.7% (n = 29) and 44.7% (n = 21) of the populations, respectively. The results showed a clinically important but statistically non-significant difference between the two groups. The overall rate of SSI in the as-treated analysis was 14.7%, while it was slightly lower at 13.5% in the intent-to-treat (ITT) analysis. In both cases, there was a trend toward higher rates of SSI in the SSD, with the ITT analysis showing somewhat larger differences; however, in both the logistic regression models, the trends were non-significant. Conclusion: We present a randomized controlled trial of prophylactic NPWT following elective colorectal resection. The results indicated a clinically important reduction in the superficial SSI rate compared with standard surgical dressing. A more extensive randomized study is needed to clarify the effectiveness of NPWT to reduce wound infections in this patient population. Limitations: Neither patients nor clinicians were blinded to the treatment. The lack of recruitment introduced a type two statistical error, which led to a non-significant difference between the cases and controls. Conflict of Interest: None.

Reducing surgical site infection rates in colorectal surgery - a quality improvement approach to implementing a comprehensive bundle.

AimSurgical site infections (SSIs) are a preventable cause of morbidity following surgical procedures. Strategies to reduce rates of SSI must address pre‐, peri‐ and postoperative factors and multiple interventions can be combined into ‘bundles’. Adoption of these measures can reduce SSIs, but this is dependent on high levels of compliance. The aim of this work is to assess the change in rates of SSI in elective colorectal surgery after implementing a colorectal SSI bundle.MethodThis is a single‐centre prospective cohort study. All elective colorectal procedures from 2011 until 2018 (inclusive) were included. The primary outcome was inpatient SSI. A multimodal bundle was implemented using quality improvement methodology. The bundle was altered during the timeframe of the study to optimize outcomes. Data were analysed by interrupted time series analysis assessing points at which the bundle was altered.ResultsIn the study period, 1075 elective colorectal procedures were performed. Prior to the introduction of the colorectal SSI bundle, the SSI rate was 16.4%. During the implementation period (2013–2015), the overall rate of SSI fell from 15.9% to 9.4%, with the most significant reduction being in superficial SSI, from 8.6% to 4.7%. In the postimplementation period from 2015–2018, there was a further reduction in the overall rate of SSI (5.1%). In 2018, there were 87 consecutive cases without infection.ConclusionA successful reduction in the rate of SSI following elective colorectal surgery can be achieved by adopting a comprehensive perioperative bundle. This is complemented by a process of continuous measurement and evaluation. The current bundle has achieved a significant reduction in superficial SSI.

Prospective surveillance after implementation of a colorectal surgical site infection prevention bundle

Abstract Objective Surgical site infections (SSI) are the most frequent complications after colorectal surgery. The aim of the present study was to evaluate the impact of a standardized SSI prevention bundle. Methods The multimodal, evidence-based care bundle included 9 intraoperative items (antibiotic type, timing and re-dosing, desinfection, induction temperature control &amp;gt;36.5°, glove change, intracavity lavage, wound protection and closure strategy). The bundle was implemented in November 2018 and applied to all consecutive patients undergoing colonic resections. Demographics, surgical specifics and overall compliance to the care bundle were prospectively assessed until October 2020. The primary outcome SSI was defined according to the definition of the Center for Disease Control (CDC) and independently assessed by the National Infection Surveillance Committee (Swissnoso) up to 30 postoperative days. A historical, institutional pre-implementation control group (2012-2017, DOI: 10.1016/j.jhin.2018.09.011) with identical methodology was used for comparison. Results In total, 243 patients were included. The control group included 1’263 patients. Both groups were comparable regarding main demographics (age, sex, body mass index, American Society of Anaesthesiologists class) and surgical characteristics (type and duration of surgery). Overall compliance to the care bundle was 77% (IQR 77-88). Lowest compliance was observed for temperature control (48%), intracavity lavage (59%) and predefined wound closure strategy (74%). Surgical site infections were reported in 54 patients (22.2%) vs. 21.4% in the control group, p = 0.79. Infection rates were comparable throughout the CDC categories: superficial: 11 patients (4.5%) vs. 4.2%, p = 0.82, deep incisional: 9 patients (3.7%) vs. 5.1%, p = 0.34, organ space: 34 (14%) vs. 12.4%, p = 0.48. Conclusion Implementation of a standardized surgical care bundle had no impact on SSI rates according to these preliminary results. Improved compliance to individual measures may help to achieve a clinical benefit.

Enhancing recovery: Joining the Improving Surgical Care and Recovery programme to decrease colorectal surgical site infections.

Surgical site infections after colorectal surgery are a clinical and financial challenge in healthcare. The purpose of this project was to decrease the rate of surgical site infections in colorectal surgical patients in a community hospital with an academic cancer centre in the United States of America. The Quality Improvement Department obtained data to measure the hospital's performance with colorectal surgical patients. The data examined the surgical site infection rate and the length of stay. A multidisciplinary team was established to implement protocols to improve compliance. More than 200 patients received a colorectal surgical resection at the hospital. The implemented protocols decreased both the surgical site infection rate and the length of stay (9.1-0% and median 6-4 days respectively). Challenges with implementation of the Improving Surgical Care and Recovery programme, in a community setting, are discussed. The challenges were worked through collaboratively to achieve the best outcomes for the patients. The interdisciplinary committee used evidence-based practices to enhance the care of the colorectal patients. Some of the protocols that emerged were: patient education, pain medication, mechanical bowel preparation and antibiotics, as well as early alimentation. The protocols are discussed in Tables 1 to 4.