A study of telephone screening and direct observation of surgical wound infections after discharge from hospital

Diagnostic Performance of a telephone questionnaire for fracture-related infections (FRIs) in open tibia fracture patients in Tanzania

INTRODUCTION

Fracture-related infections (FRIs) are a major cause of trauma-associated morbidity worldwide. In 2018, an expert group supported by the AO Foundation, European Bone and Joint Infection Society developed a consensus definition of FRI. Still, there is limited knowledge on the applicability of this definition in low- and middle-income countries (LMICs). Given the unique barriers that cause low follow-up rates for orthopaedic trauma patients in LMICs, this study aims to evaluate the diagnostic performance of a telephone questionnaire in identifying patients with FRIs after open tibia fracture fixation in Tanzania.

MATERIALS AND METHODS

Patients from a randomized controlled trial investigating the infection prevention benefit of locally applied gentamycin for open tibial fractures were included. Patients completed FRI based telephone questionnaires 7-10 days prior to scheduled follow-ups at 6 weeks, 3 months, 6 months, 9 months, and 1 year. The questionnaire included two "confirmatory" criteria questions for FRI (i.e., open wound and purulent drainage) and three "suggestive" criteria questions (i.e., wound drainage, fever, and warmth). Contingency tests were performed to identify the sensitivity and specificity between answers and adjudicated FRI diagnoses at the corresponding in-person follow-up. Data was analysed using STATA version 15.0 and MedCalc's online diagnostic test calculator.

RESULTS

There were a total of 234 complete questionnaires and 85 unique patients included. The sensitivity and specificity of having any positive answer in the questionnaire was highest at 6 months (100 % and 92.5 %, respectively). For all time-points pooled, sensitivity was 71.4 % and specificity was 93.0 %. Drainage had the highest sensitivity (71.4 %) while fever had the highest specificity (99.6 %). For confirmatory criteria, sensitivity was 14.3 % and specificity was 96.0 %. Contrastingly, the sensitivity for suggestive criteria was higher (71.4 %), with a similar specificity (93.8 %).

CONCLUSION

Our study indicates that telephone questionnaires have adequate diagnostic performance when assessing FRIs. The presence of drainage identified the majority of patients with FRI, and specificities were high across confirmatory and suggestive criteria. Our study is one of the first to evaluate telephone questionnaires as a diagnostic tool for FRIs in patients with open tibia fractures in a LMIC hospital and validates the FRI consensus definition criteria.

Diagnostic accuracy of telemedicine for detection of surgical site infection: a systematic review and meta-analysis

The Sars-CoV-2 pandemic catalysed integration of telemedicine worldwide. This systematic review assesses it’s accuracy for diagnosis of Surgical Site Infection (SSI). Databases were searched for telemedicine and wound infection studies. All types of studies were included, only paired designs were taken to meta-analysis. QUADAS-2 assessed methodological quality. 1400 titles and abstracts were screened, 61 full text reports were assessed for eligibility and 17 studies were included in meta-analysis, mean age was 47.1 ± 13.3 years. Summary sensitivity and specificity was 87.8% (95% CI, 68.4–96.1) and 96.8% (95% CI 93.5–98.4) respectively. The overall SSI rate was 5.6%. Photograph methods had lower sensitivity and specificity at 63.9% (95% CI 30.4–87.8) and 92.6% (95% CI, 89.9–94.5). Telemedicine is highly specific for SSI diagnosis is highly specific, giving rise to great potential for utilisation excluding SSI. Further work is needed to investigate feasibility telemedicine in the elderly population group.

Telemedicine in Orthopedic Surgery: A Systematic Review of Current Evidence

Introduction: The coronavirus disease 2019 (COVID-19) pandemic has triggered transformative changes in how clinicians interact with patients. There has been a shift toward virtual consultations. The evidence to support this change in practice is unclear. The aim of this study was to systematically review the evidence base for virtual consultations for orthopedics. Materials and Methods: Two independent reviewers performed a literature search based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, utilizing the MEDLINE, EMBASE, and Scopus databases. Only studies reporting outcomes following the use of telemedicine for diagnosis, consultation, rehabilitation, and follow-up were included. Outcomes analyzed were: (1) patient and clinician satisfaction, (2) clinical outcome measures, and (3) cost analysis of traditional versus teleconsultation. Results: A total of 41 studies were included. Fifteen studies compared clinical outcomes of telemedicine against a matched traditional cohort. Of these 15 studies, 2 demonstrated noninferiority, 9 showed no statistically significant difference, and 4 found telemedicine to be superior. Eleven studies recorded patient reported outcomes, which demonstrated high patient satisfaction. Nine studies reported decreased costs when telemedicine was compared to traditional care. The remaining six studies had varied aims and methodologies that didn't fit well with any of these subheadings. Discussion: While the available evidence is limited, the studies assessed here show that telemedicine can deliver high quality health care with good clinical outcomes and high patient satisfaction in a cost-effective manner. Our team thinks what this has highlighted is that communication technology is advancing rapidly and that we as a community of surgeons need to be able to adapt rapidly and adopt innovative technology to continue to improve patient experience and outcomes.

Healthcare professionals' proposed eHealth needs in elective primary fast-track hip and knee arthroplasty journey: A qualitative interview study

AIMS AND OBJECTIVES

To examine the lived experience of healthcare professionals providing care for patients with total hip and knee arthroplasty and to understand healthcare professionals' proposed eHealth needs in elective primary fast-track hip and knee arthroplasty journey.

BACKGROUND

There is little evidence in nursing literature to indicate how to develop new eHealth services to support surgical care journeys. Evidence is particularly lacking regarding the development of eHealth solutions.

DESIGN

This was a qualitative interview study.

METHODS

Semi-structured interviews were conducted with four surgeons, two anaesthesiologists, ten nurses and four physiotherapists in a single joint replacement centre during autumn 2018. The data were analysed using an inductive content analysis method. NVivo qualitative data analysis software was used. The COREQ checklist for qualitative studies was followed.

RESULTS

Our research addressed the gap in evidence by focusing on the four main parts of the patient journey in the selected context. Analysis of the data revealed nine main categories for the proposed eHealth needs: eligibility criteria, referrals, meeting the Health Care Guarantee, patient flow, postdischarge care, patient counselling, communication, transparency of the journey and receiving feedback. In addition, the requirements and further development needs for eHealth solutions were generally identified.

CONCLUSIONS

From the point of view of healthcare professionals, eHealth solutions have huge potential in supporting the elective primary fast-track hip and knee arthroplasty journey. However, it is important to acknowledge that these needs may be very different depending on the technological and organisational environment in question.

RELEVANCE TO CLINICAL PRACTICE

More effective use of information and communication technologies is needed for organisational optimisation resulting in a streamlined pathway, better access to healthcare services, improved outcomes and an improved patient experience. These results can be used in the development of new eHealth solutions to support surgical care journeys and patient education.

Is telephone follow-up really effective in early diagnosis of inflammatory complications after tooth extraction?

BACKGROUND

To establish whether telephone follow-up is really able to intercept post-extraction complications and to evaluate the degree of patient satisfaction with this kind of post-surgical monitoring.

MATERIAL AND METHODS

six hundred and thirty-eight patients were enrolled and randomly assigned to a test or control group. Test group patients were monitored by telephone follow-up 24 and 72 hours after surgery to investigate the presence of local symptoms that are frequently associated with surgical wound infection and inflammation. Both test and control group patients were examined 7 days at suture removal. Patients with systemic diseases, those in which intra-operative accidents occurred during surgery and those for whom extraction suture was not required, were excluded.

RESULTS

At least one complication among alveolar osteitis, alveolar inflammation, alveolar infection and dehiscence involved 15.70% of the patients in the test group and 30.70% of the patients in the control group and telephone follow-up proved to be useful in early identification of anomalies in the post-extraction wound healing process. Comparable results were recorded in all extraction subgroups divided according to the type (surgical and non-surgical) and the number (single and multiple) of extractions performed in the same session. Telephone follow-up showed an 8.60 ± 1.17 (0 to 10 score scale) average acceptance. All cases of alveolar osteitis and infection occurred in patients who underwent antibiotic prophylaxis.

CONCLUSIONS

Telephone follow-up seems to allow early detection of any possible wound healing complications, it is widely accepted by patients and it could therefore be considered a valid method for wound healing monitoring after tooth extractions, due to its effectiveness, feasibility and low costs.

Patient Self-Assessment of Surgical Site Infection is Inaccurate

BACKGROUND

Availability of surgical site infection (SSI) surveillance rates challenges clinicians, healthcare administrators and leaders and the public. The purpose of this report is to demonstrate the consequences patient self-assessment strategies have on SSI reporting rates.

METHODS

We performed SSI surveillance among patients undergoing general surgery procedures, including telephone follow-up 30 days after surgery. Additionally we undertook a separate validation study in which we compared patient self-assessments of SSI with surgeon assessment. Finally, we performed a meta-analysis of similar validation studies of patient self-assessment strategies.

RESULTS

There were 22/266 in-hospital SSIs diagnosed (8.3%), and additional 16 cases were detected through the 30-day follow-up. In total, the SSI rate was 16.8% (95% CI 10.1-18.5). In the validation survey, we found patient telephone surveillance to have a sensitivity of 66% (95% CI 40-93%) and a specificity of 90% (95% CI 86-94%). The meta-analysis included five additional studies. The overall sensitivity was 83.3% (95% CI 79-88%), and the overall specificity was 97.4% (95% CI 97-98%). Simulation of the meta-analysis results divulged that when the true infection rate is 1%, reported rates would be 4%; a true rate of 50%, the reported rates would be 43%.

CONCLUSION

Patient self-assessment strategies in order to fulfill 30-day SSI surveillance misestimate SSI rates and lead to an erroneous overall appreciation of inter-institutional variation. Self-assessment strategies overestimate SSIs rate of institutions with high-quality performance and underestimate rates of poor performance. We propose such strategies be abandoned. Alternative strategies of patient follow-up strategies should be evaluated in order to provide valid and reliable information regarding institutional performance in preventing patient harm.

Postdischarge surveillance of surgical site infections using telephone calls and a follow-up card in a resource-limited setting

The use of a follow-up card and telephone calls appeared to be an efficient modality for postdischarge surveillance of surgical site infections (SSIs) in Cambodia. One hundred and sixty-one patients were given a follow-up card and asked to present it to any healthcare practitioner they visited during the 30 days following their surgery. Patients were subsequently telephoned to collect information. After discharge, 87% of the patients provided follow-up data. Of these, 25 patients with no SSIs detected during hospitalization reported that 'white liquid had discharged from the surgical wound'; among them, nine cases of purulent drainage were reported by a practitioner.

Leveraging Electronic Medical Records for Surveillance of Surgical Site Infection in a Total Joint Replacement Population

Objective.

TO evaluate whether a hybrid electronic screening algorithm using a total joint replacement (TJR) registry, electronic surgical site infection (SSI) screening, and electronic health record (EHR) review of SSI is sensitive and specific for SSI detection and reduces chart review volume for SSI surveillance.

Design.

Validation study.

Setting.

A large health maintenance organization (HMO) with 8.6 million members.

Methods.

Using codes for infection, wound complications, cellullitis, procedures related to infections, and surgeon-reported complications from the International Classification of Diseases, Ninth Revision, Clinical Modification, we screened each TJR procedure performed in our HMO between January 2006 and December 2008 for possible infections. Flagged charts were reviewed by clinical-content experts to confirm SSIs. SSIs identified by the electronic screening algorithm were compared with SSIs identified by the traditional indirect surveillance methodology currently employed in our HMO. Positive predictive values (PPVs), negative predictive values (NPVs), and specificity and sensitivity values were calculated. Absolute reduction of chart review volume was evaluated.

Results.

The algorithm identified 4,001 possible SSIs (9.5%) for the 42,173 procedures performed for our TJR patient population. A total of 440 case patients (1.04%) had SSIs (PPV, 11.0%; NPV, 100.0%). The sensitivity and specificity of the overall algorithm were 97.8% and 91.5%, respectively.

Conclusion.

An electronic screening algorithm combined with an electronic health record review of flagged cases can be used as a valid source for TJR SSI surveillance. The algorithm successfully reduced the volume of chart review for surveillance by 90.5%.

[Implementation of a post-discharge surgical site infection system in herniorrhaphy and mastectomy procedures]

INTRODUCTION

Monitoring surgical site infection (SSI) performed during hospitalization can underestimate its rates due to the shortening in hospital stay. The aim of this study was to determine the actual rates of SSI using a post-discharge monitoring system.

METHODS

All patients who underwent herniorraphy or mastectomy in the Hospital Universitario Ramón y Cajal from 1 January 2011 to 31 December 2011 were included. SSI data were collected prospectively according to the continuous quality improvement indicators (Indicadores Clinicos de Mejora Continua de la Calidad [INCLIMECC]) monitoring system. Post-discharge follow-up was conducted by telephone survey.

RESULTS

A total of 409patients were included in the study, of whom 299 underwent a herniorraphy procedure, and 110 underwent a mastectomy procedure. For herniorrhaphy, the SSI rate increased from 6.02% to 7.6% (the post-discharge survey detected 21.7% of SSI). For mastectomy, the SSI rate increased from 1.8% to 3.6% (the post-discharge survey detected 50% of SSI).

CONCLUSIONS

Post-discharge monitoring showed an increased detection of SSI incidence. Post-discharge monitoring is useful to analyze the real trend of SSI, and evaluate improvement actions. Post-discharge follow-up methods need to standardised.

Inter-hospital comparison of rates of surgical site infection following caesarean section delivery: evaluation of a multicentre surveillance study

BACKGROUND

Short postoperative stays following caesarean section delivery make it difficult to assess accurately the risk of surgical site infection (SSI). Methods of case-finding that minimize variation are required to support effective surveillance systems, especially where used for benchmarking.

AIM

To evaluate the efficacy of case-finding methods for SSI following caesarean delivery and their utility in establishing benchmark rates of SSI.

METHODS

Hospitals conducted surveillance over one or two 13-week periods. Patients were reviewed during their inpatient stay, post partum by community midwives and via patient questionnaire at 30 days post delivery. To estimate the reliability of case-finding methods, case-note reviews were undertaken in a random sample of four hospitals.

FINDINGS

A total of 404 SSIs were detected in 4107 caesarean deliveries from 14 hospitals. The median time to SSI was 10 days, 66% were detected in-hospital or by community midwives, and an additional 34% were patient-reported. The rate of SSI was 9.8% but the proportion of patients followed up varied significantly between centres. The estimated sensitivity and specificity of case-finding was 91.4% [95% confidence interval (CI): 53.4-98.4] and 98.6% (95% CI: 98.4-98.8), the positive predictive value 91.0% (95% CI: 82.4-96.1) and negative predictive value 98.6% (95% CI: 93.9-99.5).

CONCLUSIONS

Combined case ascertainment methods are a feasible way to achieve active post-discharge surveillance and had high negative and positive predictive values. Additional SSIs can be detected by patient questionnaires but rates of SSI were strongly influenced by variation in intensity of both healthcare worker- and patient-based case-finding. This factor must be taken into account when comparing or benchmarking rates of SSI.

Surveillance of surgical site infection post vasectomy

The aim of this study was to determine the incidence of surgical site infection (SSI) after vasectomy and to identify associated patient and perioperative risk factors, including the operating room environment (non-ventilated treatment room or ventilated operating theatre). This study used an active 30-day surveillance follow-up programme with telephone interviews and home visits. Patients were recruited over an 18 month period. Demographics, patient details and perioperative procedures were documented on the day of surgery. Patients were telephoned 10 and 30 days post procedure. Of 1,155 patients enrolled, 994 (86%) completed the full 30-day follow-up. Of these, 25 (2.5%) developed an SSI. The mean number of days until presentation with an SSI was 13. No statistically significant difference was found in rates of SSI when vasectomies were undertaken in either ventilated operating theatres or non-ventilated treatment rooms.

Ocorrência e fatores de risco para infecção de sítio cirúrgico em cirurgias ortopédicas

OBJETIVO: Analisar a ocorrência e os fatores de risco para infecção de sítio cirúrgico em pacientes submetidos a cirurgias ortopédicas. MÉTODOS: Estudo transversal prospectivo com 93 pacientes submetidos a cirurgias ortopédicas eletivas e limpas. RESULTADOS: A infecção de sítio cirúrgico foi diagnosticada em 16 pacientes (17,2%). Na análise dos dados, após ajuste do modelo de regressão logística binária, apenas a variável tempo total de internação mostrou-se com relação estatisticamente significativa com a presença ou não de infecção. CONCLUSÃO: A ocorrência de infecção de sítio cirúrgico em cirurgia ortopédica foi mais elevada, sendo 75% dos casos diagnosticados após a alta hospitalar, resultado que reforça a necessidade da vigilância pós-alta.

The rate, risk factors and cost of surgical site infections in primary breast surgery

Although breast surgery involving clean wounds is expected to be associated with a low risk of surgi-cal site infection (SSI) and minimal associated costs, estimates of infection could be affected by intensity of case finding and choice of follow-up methods. A broad range of post-discharge follow-up methods is more likely to estimate true SSI rates and costs. This prospective systematic study used 30 day surveillance with active data collection methods to identify the rate and cost of surgical site infection in patients having primary breast surgery. Ten per cent of patients (16/159) had a surgical site infection. The additional average cost of treating each infected patient was £1443. Hierarchical sequential regression identified high body mass index, operations lasting more than two hours and smoking as significant independent risk factors.

Right colon, left colon, and rectal surgeries are not similar for surgical site infection development. Analysis of 277 elective and urgent colorectal resections

PURPOSE

Surgical site infections (SSIs) are the most common infections in colorectal surgery. Although some studies suggest that rectal surgery differs from colon surgery for SSI incidence and risk factors, the National Nosocomial Infection Surveillance system categorizes all colorectal surgeries into only one group. The aim of this study was to determine incidence, characteristics, and risk factors of SSIs according to the subclassification of colorectal surgery into right colon surgery (RCS), left colon surgery (LCS), and rectum surgery (RS).

METHODS

From November 2005 to July 2009, all patients requiring colorectal resectioning were enrolled into our program. The outcome of interest was an SSI diagnosis. Univariate and multivariate analyses were performed to determine SSI predictors in each group.

RESULTS

Two hundred seventy-seven consecutive colorectal resections were analyzed. SSI rates were 8% in RCS, 18.4% in LCS, and 17.6% in RS. LCS and RS showed significantly higher SSI incidences (p = 0.022) and greater rates of organ/space infections compared to RCS (p = 0.029). Predictors of SSI were steroid use among RCS, age greater than 70 years, multiple comorbidities, steroid use, non-neoplastic colonic disease, urgent operation, ostomy creation, postoperative intensive care among LCS, preoperative chemoradiation, heart disease, and prolonged operation among RS patients. On multivariate analysis, the coupled LCS and RS groups showed an increased risk for SSI compared to RCS (OR, 2.57).

CONCLUSIONS

SSI incidences, characteristics, and risk factors seem to be different among RCS, LCS, and RS. A tailored SSI surveillance program should be applied for each of the three groups, leading to a more competent SSI recognition and reduction of SSI incidence and related costs.

Accounting for incomplete postdischarge follow-up during surveillance of surgical site infection by use of the National Nosocomial Infections Surveillance system's risk index

OBJECTIVE

We examined the usefulness of a simple method to account for incomplete postdischarge follow-up during surveillance of surgical site infection (SSI) by use of the National Nosocomial Infections Surveillance (NNIS) system's risk index.

DESIGN

Retrospective cohort study that used data prospectively collected from 1993 through 2006.

SETTING

Five private, nonuniversity healthcare facilities in Belo Horizonte, Brazil.

PATIENTS

Consecutive patients undergoing the following NNIS operative procedures: 20,981 operations on the genitourinary system, 11,930 abdominal hysterectomies, 7,696 herniorraphies, 6,002 cholecystectomies, and 6,892 laparotomies.

METHODS

For each operative procedure category, 2 SSI risk models were specified. First, a model based on the NNIS system's risk index variables was specified (hereafter referred to as the NNIS-based model). Second, a modified model (hereafter referred to as the modified NNIS-based model), which was also based on the NNIS system's risk index, was specified with a postdischarge surveillance indicator, which was assigned the value of 1 if the patient could be reached during follow-up and a value of 0 if the patient could not be reached. A formal comparison of the capabilities of the 2 models to assess the risk of SSI was conducted using measures of calibration (by use of the Pearson goodness-of-fit test) and discrimination (by use of receiver operating characteristic curves). Goodman-Kruskal correlations (G) were also calculated.

RESULTS

The rate of incomplete postdischarge follow-up varied between 29.8% for abdominal hysterectomies and 50.5% for cholecystectomies. The modified NNIS-based model for laparotomy did not show any significant benefit over the NNIS-based model in any measure. For all other operative procedures, the modified NNIS-based model showed a significantly improved discriminatory ability and higher G statistics, compared with the NNIS-based model, with no significant impairment in calibration, except if used to assess the risk of SSI after operations on the genitourinary system or after a cholecystectomy.

CONCLUSIONS

Compared with the NNIS-based model, the modified NNIS-based model added potentially useful clinical information regarding most of the operative procedures. Further work is warranted to evaluate this method for accounting for incomplete postdischarge follow-up during surveillance of SSI.

Post-discharge surveillance to identify colorectal surgical site infection rates and related costs

A growing number of surveillance studies have highlighted concerns with relying only on data from inpatients. Without post-discharge surveillance (PDS) data, the rate and burden of surgical site infections (SSIs) are underestimated. PDS data for colorectal surgery in the UK remains to be published. This is an important specialty to study since it is considered to have the highest SSI rate and is among the most expensive to treat. This study of colorectal SSI used a 30 day surveillance programme with telephone interviews and home visits. Each additional healthcare resource used by patients with SSI was documented and costed. Of the 105 patients who met the inclusion criteria and completed the 30 day follow-up, 29 (27%) developed SSI, of which 12 were diagnosed after discharge. The mean number of days to presentation of SSI was 13. Multivariable logistic analysis identified body mass index as the only significant risk factor. The additional cost of treating each infected patient was pound sterling 10,523, although 15% of these additional costs were met by primary care. The 5 month surveillance programme cost pound sterling 5,200 to run. An analysis of the surveillance nurse's workload showed that the nurse could be replaced by a healthcare assistant. PDS to detect SSI after colorectal surgery is necessary to provide complete data with accurate additional costs.

Telemedicine in wound care

Telemedical wound care is one of the applications of teledermatology. We present our experience using telemedicine in the successful assessment and treatment of three patients with hard-to-heal ulcers. Three patients were seen at the PEMEX General Hospital in Veracruz, Mexico. The first patient was a 53-year-old man with hypertension, morbid obesity, chronic venous insufficiency, recurrent erysipelas, leg ulcers and lymphoedema. There was one ulcer on his left lower leg (20 x 10 cm) and one on his right leg (9 x 7 cm). The second patient was a 73-year-old woman with class III obesity and ulcers in her right leg, secondary to surgical debridement of bullous erysipelas. The third patient was a 51-year-old female with rheumatoid arthritis with one ulcer on each leg and chronic lymphostasis. Photographs with a digital camera were taken and sent weekly via email to a wound care specialist in Mexico City. The photographs allowed the expert to diagnose and evaluate the chronic wounds periodically. In the present cases, telemedicine allowed us to have a rapid evaluation, diagnosis and treatment. The images were of enough quality to be useful and small enough to be sent via regular email to the remote physician who immediately gave his feedback. The expert was confident to give therapeutic recommendations in this way, and we considered this method to be very cost-effective, saving the patient and the health care system, especially in transportation.

Rates of surgical site infection after hip replacement as a hospital performance indicator: analysis of data from the English mandatory surveillance system

OBJECTIVE

To describe rates of surgical site infection (SSI) after hip replacement and to use these data to provide a simple mechanism for identifying poorly performing hospitals that takes into account variations in sample size.

DESIGN

Prospective surveillance study.

SETTING

A total of 125 acute care hospitals in England that participated in mandatory SSI surveillance from April 1, 2004 through March 31, 2005.

PATIENTS

Patients who underwent total hip replacement (THR) or hip hemiarthroplasty (HH).

METHODS

A standard data set was collected for all eligible operations at participating hospitals for a minimum of 3 months annually. Defined methods were used to identify SSIs that occurred during the inpatient stay. Data were checked for quality and accuracy, and funnel plots were constructed by plotting the incidence of SSI against the number of operations.

RESULTS

Data were collected on 16,765 THRs and 5,395 HHs. The cumulative SSI incidence rates were 1.26% for THR and 4.06% for HH; the incidence densities were 1.38 SSIs per 1,000 postoperative inpatient days for THR and 2.3 SSIs per 1,000 postoperative inpatient days for HH. The risk of infection associated with revision surgery was significantly higher than that associated with primary surgery (2.7% [95% confidence interval, 2.0%-3.5%] vs. 1.1% [95% confidence interval, 1.0%-1.2%]; P=.003). Rates varied considerably among hospitals. Nineteen hospitals had rates above the 90th percentile. However, the use of funnel plots to adjust for the precision of estimated SSI rates identified 7 hospitals that warranted further investigation, including 2 with crude rates below the 90th percentile.

CONCLUSIONS

Funnel plots of rates of SSI after hip replacement provide a valuable method of presenting hospital performance data, clearly identifying hospitals with unusually high or low rates while adjusting for the precision of the estimated rate. This information can be used to target and support local interventions to reduce the risk of infection.

Nine-year downward trends in surgical site infection rate in southeast France (1995–2003)

The aim of this study was to estimate temporal trends in the incidence of surgical site infection (SSI) using a large SSI surveillance network in southeast France from 1995 to 2003. Data were analysed from 187 surgical wards that had participated in the network for at least two years. The change in SSI rate over time was modelled using a hierarchical logistic regression model with patients clustered within surgical wards. Of the 200 207 patients selected, 3786 (1.9%) had an SSI. The nine-year trend in SSI rate estimated by an odds ratio of 0.95 (95% confidence interval 0.93-0.97) was interpreted as a 5% decrease in SSI rate per year. This decrease was constant over the study period and was observed for almost all of the different types of surgical operations (orthopaedic, gastrointestinal, urology, etc). Overall SSI rates were reduced by 45% over a period of nine years. This trend was maintained even when taking into account the heterogeneity of the surgical wards and the diversity of patient demographics over time. From this, the 5% decrease per year can be reasonably interpreted as a result of preventive measures taken by surgical wards to reduce SSIs.

Factors influencing the risk of surgical site infection following diagnostic exploration of the abdominal cavity

OBJECTIVES

We assessed the contribution of the surgical approach and the NNIS system's surgical component variables to surgical site infection (SSI) risk after diagnostic exploration of the abdominal cavity.

METHODS

Retrospective cohort study with prospective data collection (1993-2006) in five private, non-universitary, secondary or tertiary healthcare facilities. Outcome variable was SSI development within 30 days after surgery. Explanatory variables were age, gender, surgical approach (laparoscopic/open), elective/emergency/trauma procedure, hospital, surgeon, year, additional procedures, wound class, operation duration and ASA-PS score.

RESULTS

Consecutive in-patients (6761) were included. Mean age was 38.1 (+/-14.1) years and 87.3% were female; 68% procedures were laparoscopic. Postdischarge follow-up was obtained for 57.7% patients. Patients operated on laparoscopically had reduced adjusted overall risk of SSI (OR=0.40, 95% CI=0.28-0.56), incisional infection (OR=0.43, 95% CI=0.29-0.62) and organ/space infection (OR=0.19, 95% CI=0.07-0.49). Older age, longer procedures, emergency or trauma procedures, medium- or high-risk surgeons and year <or=1999 increased the adjusted risk of incisional infection. Adjusted risk of organ/space infection was higher in older patients, emergency or trauma procedures, additional procedures and procedures performed by high-risk surgeons.

CONCLUSIONS

Laparoscopy was associated with lower risk of incisional and organ/space infection. NNIS system's surgical component variables contributed variably to SSI risk.

Post-discharge surgical site infection surveillance by automated telephony

Surgical site infection (SSI) is an important outcome indicator after surgery and is part of a national programme of surveillance in Scotland. Post-discharge surveillance has important cost implications for both primary and acute areas of the NHS and it is therefore important to establish a robust method to obtain these data. This study used an automated telephony system to gain information on SSI developing post-discharge. The patients included were those who had inpatient surveillance carried out following hip and knee replacements, and cardiac surgery. A recorded message was used to ask the patient questions concerning the state of their wound. These questions were answered by pressing numbers on their phone. The study population was 104 and there were 18 patients who thought they had a wound infection but after clarification only nine patients suffered a post-discharge SSI. The number of patients who responded with at least one call to the system was 62. Although this pilot study was carried out with small numbers, it was felt that with certain refinements it should continue to be used for post-discharge surgical site surveillance of infection.

European perspective on surveillance

International comparisons yield interesting insights regarding quality of care, beyond the field of healthcare-associated infection (HAI) prevention. Therefore, the exchange of experiences of national surveillance systems should be encouraged. However, the interpretation of differences of HAI rates should be made very carefully. Differences in healthcare systems, legal and cultural aspects, as well as differences in the methods of the surveillance systems, may have an enormous influence. One of the most crucial aspects of surveillance data is their validity, therefore it would be very helpful to combine the experience of all European validation studies performed in order to develop a protocol for a meaningful and cost-effective method for performing validation studies. Meanwhile some national surveillance systems have shown their effectiveness with reductions of 24 57% for surgical site infections (SSIs) and 20 29% for HAI in ICUs. Today, mandatory public reporting is probably the most demanding problem for the national HAI surveillance systems in Europe. The exchange of experience between the European surveillance networks in this respect in particular--remains a cornerstone and will motivate further activities in the individual countries.

Patient satisfaction with nurse-led telephone consultation for the follow-up of patients with prostate cancer

Prostate cancer is being diagnosed earlier and in higher numbers than ever before. The nature of the disease means many patients have to be monitored regularly and for a prolonged period leading to increased pressure on urology outpatient resources and inconvenience for the patient. Here we investigate patient satisfaction with a nurse-led telephone-based follow-up clinic and compare it to satisfaction with traditional outpatient consultations. A Consultation Satisfaction Questionnaire (CSQ) evaluating four domains, namely General Satisfaction (GS), Professional Care (PC), Depth of Relationship (DR) and Perceived Time (PT) was used to assess satisfaction in three groups. Group 1 consisted of 299 patients attending the outpatient department before commencing telephone consultations; Group 2 consisted of 163 men attending outpatients after commencement of the telephone consultations; and Group 3 was the telephone group (234 men). We demonstrated no significant difference in GS or PC between Group 1 and Group 3 or Group 2 and Group 3, although DR and PT was significantly lower in the telephone group compared with Group 1. We also found that waiting times were significantly shorter in the telephone group. In conclusion, telephone follow-up appears to be an acceptable alternative to outpatient follow-up in terms of GS and PC and appears to be more convenient for the patient, although these benefits come at the expense of loss of DR and PT with the clinician.

Optimising femoral component rotation using Equiflex instrumentation: a clinical review

Although there is agreement that flexion and extension spaces should be symmetrical and that rotation of the femoral component impacts outcome in a knee replacement, there is dispute over what is the 'correct' rotation and how best to achieve it (Akagi et al., Clin Orthop Relat Res 366:155-163, 1999; Anouchi et al., Clin Orthop Relat Res 287:170-177, 1993; Barrack et al., Clin Orthop Relat Res 392:46-55, 2001; Berger et al., Clin Orthop Relat Res 356:144-153, 1998; Jenny and Boeri, Acta Orthop Scand 75(1):74-77, 2004; Poilvache et al., Clin Orthop Relat Res 331:35-46, 1996; Siston et al., J Bone Joint Surg Am 87(10):2276-2280, 2005). Insall and Scuderi recommended placing a tensor in flexion and rotating the femoral cutting block so that its posterior edge is parallel to the cut tibia (Insall, Surgery of the knee, vol 2, 2nd edn., Churchill Livingstone, New York, 1993; Scuderi and Insall, Orthop Clin N Am 20:71-78, 1989). We feel Equiflex instrumentation will reliably achieve Insall and Scuderi's recommendation. To evaluate early results and lateral retinacular release rates using Equiflex instrumentation for TKR, we evaluated 209 consecutive knees (31 valgus, 178 varus) using this technique from 4 April 2005 until 19 September 2006. Pre and postop American Knee Society and Oxford scores, deformity, ROM, lateral retinacular release rates and complications were recorded. We could correct alignment and achieve our technical goals in 99% of cases. A lateral retinacular release was required in only five knees (2.4%). The complications are comparable to published data. The Equiflex instrumentation does help in equalising flexion-extension gaps, improves patellar tracking and reduces the incidence of lateral retinacular release.

Procedure-specific surgical site infection rates and postdischarge surveillance in Scotland

OBJECTIVE

To investigate the impact of postdischarge surveillance (PDS) on surgical-site infection (SSI) rates for selected surgical procedures in acute care hospitals in Scotland.

DESIGN

Prospective surveillance of SSI after selected surgical procedures.

SETTING

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.

METHODS

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.

RESULTS

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).

CONCLUSIONS

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.

Reduction in wound infection rates by wound surveillance with postdischarge follow-up and feedback

Background

Surgical wound surveillance with postdischarge follow-up is rarely done in the UK as it is seen as expensive. The aim of this study was to determine whether employing a dedicated team was effective and reduced costs.

Methods

Infection data were collected prospectively with postdischarge follow-up at 2–3 months, and fed back to surgeons. Wound infection was defined using both ASEPSIS wound scoring and criteria of the US Centers for Disease Control (CDC) definitions.

Results

Over 4 years, 15 548 patient episodes were included. Postdischarge surveillance data were available for 79·9 per cent of the 15 154 records of patients who survived. There was a significant reduction in the rate of wound infection between the first and fourth years by ASEPSIS and CDC definitions: odds ratio 0·77 (95 per cent confidence interval (c.i.) 0·64 to 0·92) and 0·69 (95 per cent c.i. 0·57 to 0·83), respectively. The proportion of infections fell significantly in orthopaedic, cardiac and thoracic surgery. The annual budget for wound surveillance was £91 600. Changes in infection rates contributed £347 491 to the reduction in cost among the patients surveyed.

Conclusion

Wound surveillance was associated with a reduction in rates of wound infection within 4 years. The cost reduction as a result of fewer infections exceeded the cost of surveillance after 2 years.