Prolonged antibiotic prophylaxis use in elective orthopaedic surgery - a cross-sectional analysis

Antibiotic prophylaxis for surgical-site infections and adherence to evidence-based guidelines

BACKGROUND

Antimicrobial prophylaxis is an established practice for reducing surgical-site infections; however, its misuse promotes alternative challenges including antimicrobial resistance. The objective of this study was to determine factors associated with adherence to surgical antibiotic prophylaxis guidelines.

METHODS

Adults aged 18 and older who underwent 1 of 5 selected procedures between 2004 and 2022 were included. The proportion of appropriate antibiotic prophylaxis was determined for each procedure type. A logistic regression model was built to identify factors impacting appropriate prophylaxis practices.

RESULTS

Among our cohort of 9,543 patients, 4,883 were women (51.2%); mean age was 60.1 years. Most patients were White (8,407; 88.1%). Cardiothoracic, neurosurgical, gastrointestinal, and plastic surgery procedures were individually associated with decreased odds of appropriate antibiotic prophylaxis use compared with orthopedic procedures (P < .05). Patients undergoing a cardiothoracic procedure were less likely to receive the correct antibiotic (59.0%). Patients undergoing a gastrointestinal procedure were less likely to receive prophylaxis with the appropriate start time (72.6%) or duration (5.4%). Appropriate antibiotic prophylaxis was more likely in patients who were male (odds ratio, 1.14; 95% confidence interval, 1.10-1.18) and White (odds ratio, 1.17; 95% confidence interval, 1.11-1.22). Appropriate prophylaxis was significantly greater in procedures after 2010 (representing the establishment of an antimicrobial stewardship program) compared with procedures before 2010 (odds ratio, 2.05; confidence interval, 1.95-2.16).

CONCLUSION

Appropriate antibiotic prophylaxis practices demonstrated significant variation according to specialty type, patient characteristics, and the implementation of an antimicrobial stewardship program. These findings suggest the beneficial role of stewardship programs and gaps where interventions can be targeted, particularly antibiotic selection and discontinuation timing.

Antimicrobial resistance patterns of WHO priority pathogens at general hospital in Southern Ethiopia during the COVID-19 pandemic, with particular reference to ESKAPE-group isolates of surgical site infections

BACKGROUND

Antimicrobial resistance represents a significant public health challenge, resulting in an estimated 4.95 million deaths annually. In response to the global escalation of antimicrobial resistance in prevalent hospital-acquired infections such as surgical site infections (SSIs), the World Health Organization (WHO) has identified critical and priority pathogens necessitating research and development. Nevertheless, there remains a paucity of data from numerous developing nations. Therefore this study was conducted to evaluate the prevalence of SSIs, examine the microbial profile, and identify factors associated with SSIs, with a particular emphasis on WHO-priority pathogens during the COVID-19 pandemic at a general hospital in southern Ethiopia.

METHODS

A cross-sectional study was conducted on 207 adult patients clinically suspected of SSIs from September 1, 2019, to November 2022. Demographic data, clinical characteristics, and surgery-related variables were collected using pre-tested, structured, interviewer-administered questionnaires and patient chart reviews. Wound samples (swabs and/or pus) were collected aseptically from each participant following standard microbiological procedures and processed for isolation and identification of pathogens by conventional culture and biochemical testing. Bacterial isolates subjected to antimicrobial susceptibility testing, including the detection of extended-spectrum beta-lactamase (ESBL) and methicillin-resistant Staphylococcus aureus (MRSA), by the standard Kirby-Bauer disk diffusion method in accordance with Clinical and Laboratory Standards Institute (CLSI) guidelines. Data were analyzed by Statistical Packages for Social Science (SPSS) version 25, and bivariable and multivariable logistic regression was done to determine the associations between dependent and independent variables. Adjusted odds ratio with 95% confidence interval (CI) was reported, and P-value < 5% was considered statistically significant.

RESULTS

The overall prevalence of culture-confirmed SSIs among adult patients who underwent major surgery was 76.8% (95% CI: 71.0, 82.6). Among the 178 pathogens recovered, 58.5% were Gram-negative, 40.4% were Gram-positive, and 1.1% were Candida spp. The ESKAPE pathogens comprised 65.3% of the isolates, with S. aureus being the most common species, accounting for 43.5%, followed by K. pneumoniae (33.9%). Multidrug resistance (MDR) was observed in 84.37% of ESKAPE pathogens, with ESBL-producing and MRSA-producing isolates accounting for 88% and 76.5%, respectively. A. baumannii showed the highest MDR rate at 100%, followed by MRSA (90%) and K. pneumoniae (88.23%). Amikacin, meropenem, and piperacillin-tazobactam were effective agents against Gram-negatives, while linezolid, clindamycin, and gentamicin were most effective against Gram-positive bacteria. SSIs was significantly associated with emergency surgery (P < 0.001), prolonged surgery waiting time (P = 0.004), and clean-contaminated surgery (P = 0.008).

CONCLUSION

The high prevalence of MDR-ESKAPE pathogens is concerning, highlighting the need for improved infection prevention practices and antimicrobial stewardship programs.

Evaluation of the adherence to surgical antibiotic prophylaxis recommendations and associated factors in a University Hospital: A cross-sectional study

BACKGROUND

Surgical antibiotic prophylaxis (SAP) is an important preventive measure, aiming to minimize surgical site infections. However, despite evidence-based guidelines, adherence to SAP protocols remains suboptimal in clinical practice. The aim of this study was to assess the adequacy of SAP in a high-complexity hospital and investigate associated factors.

METHODS

A cross-sectional design was conducted, involving surgeries performed by expert teams in cardiology, urology, neurology, and gastrointestinal. SAP prescriptions were evaluated based on indication, antibiotic choice, dosage, and duration, according to the hospital protocol. Data analysis included descriptive statistics and association tests between protocol adherence and patient demographics, clinical variables, surgical teams, and types of surgeries.

RESULTS

Out of 1,864 surgeries, only 20.7% adhered to SAP protocols. Lower adherence rates were observed for antibiotic choice and duration of prophylaxis. Neurological surgeries exhibited significantly lower adherence, particularly concerning antibiotic choice and duration. Factors associated with nonadherence included elevated preoperative blood glucose levels, prolonged hospitalization, and extended surgical duration. Logistic regression analysis identified surgical teams as significant factors influencing protocol adherence.

CONCLUSIONS

Despite the relatively high adherence to antibiotic dosage, challenges persist in antibiotic choice and duration adjustment. Poor glycemic control, prolonged surgery, and surgical teams were variables associated with inappropriate practice.

Appropriateness of Surgical Antibiotic Prophylaxis in a Tertiary Care Teaching Hospital in Central India: A Retrospective Analysis

Surgical antibiotic prophylaxis (SAP) has been a boon in the prevention of surgical site infections (SSIs). This study was conducted to assess and evaluate the selection, timing, and duration of administration of SAP and their compliance with national and international guidelines in a tertiary care teaching hospital in India. This retrospective study included the data collected from the central records department in a tertiary care teaching hospital on major surgeries conducted between January 1, 2018, and December 31, 2018, from the departments of ENT, general surgery, orthopedic surgery, and obstetrics and gynecology. The data was analyzed for the appropriateness of their indication for SAP administration, choice, timing, and duration of antibiotics, and compliance with the American Society of Health-System Pharmacists (ASHP) and Indian Council of Medical Research (ICMR) guidelines. Results and interpretation Out of the total 394 case records included, only 2.53% (n = 10) of the cases were given an appropriate antibiotic. The duration of SAP was appropriate only in 6.53% (n = 24), and the timing of SAP administration was appropriate only in 50.76% (n = 204). The most commonly used antibiotic was ceftriaxone (pre-operative 58.12% (n = 229) and post-operative 43.14% (n = 170)). Major inappropriateness was observed in the selection of antibiotics which may be attributed to the non-availability of cefazolin in the institute. The inappropriateness of the duration of the SAP may be attributed to the extra precautions taken by the treating physicians to prevent SSIs. The overall compliance of the surgical cases with respect to the ASHP and ICMR guidelines was less than 1%. Conclusion This study identified the lacuna between the guidelines for SAP and the clinical application of the same. It also identified the areas where quality improvement was needed which can be improved by implementing antimicrobial stewardship, especially the choice and the duration of SAP administration.

WHO Point Prevalence Survey to Describe the Use of Antimicrobials at a Tertiary Care Center in Pakistan: A Situation Analysis for Establishing an Antimicrobial Stewardship Program

Antimicrobial stewardship is a systematic approach for promoting and monitoring responsible antimicrobial use globally. We conducted a prospective point prevalence survey of antimicrobial utilization among hospitalized adult patients during September 2021. The survey instrument was adapted from the WHO methodology for point prevalence surveys, and it was conducted at The Indus Hospital and Health Network, Karachi. Among the 300 admitted patients, 55% were males and the mean age was 44 (±18) years. At least 67% of the patients received one antimicrobial agent and the most common indication was surgical prophylaxis (40%). The most frequently used were antibacterial agents (97%) among all antimicrobials. Amoxicillin/Clavulanic acid and Ceftriaxone were the most frequently used antibacterial agents, i.e., 14% each. At least 56% of the antibacterial agents were amenable to antimicrobial stewardship when reviewed by infectious disease (ID) experts. Reasons for stewardship were: antibacterial not indicated (n = 39, 17.0%), unjustified prolonged duration of antibacterial (n = 32, 13.9%), extended surgical prophylaxis (n = 60, 26.2%), non-compliance to surgical prophylaxis guidelines (n = 30, 13.1%), and antibacterial not needed on discharge (n = 27, 11.7%). Median days of therapy (DOT) per agent was 3 days (IQR 2-4), while median DOT per patient was 2 days (IQR 1-4). These data have described the pattern of antimicrobial utilization in our institute. We found a higher prevalence of antimicrobial use overall as compared to the global figures, but similar to other low- and middle-income countries. Two important areas identified were the use of antimicrobials on discharge and extended surgical prophylaxis. As a result of these data, our institutional guidelines were updated, and surgical teams were educated. A post-intervention survey will help us to further determine the impact. We strongly recommend PPS at all major tertiary care hospitals in Pakistan for estimating antimicrobial utilization and identifying areas for stewardship interventions.

Prevalence, Risk Factors and Microbiological Profile of Orthopaedic Surgical Site Infection in North-Eastern Peninsular Malaysia

Introduction

The devastating outcome of orthopaedic surgical site infections (SSI) are largely preventable if its risk factors, causative organisms and antimicrobial susceptibility patterns in the regional area are known.

Materials and methods

We conducted a retrospective study to address the lack of epidemiological and microbiological data on orthopaedic SSI in Malaysia. All the 80 patients diagnosed and treated for microbiologically proven orthopaedic SSIs in a tertiary hospital in Malaysia from April 2015 to March 2019 were included in a 1:2 case control study.

Results

The prevalence of SSI in clean and clean-contaminated surgeries was 1.243%, which is consistent with most of the studies worldwide, but is low compared to other studies done in Malaysia. The most common type of orthopaedics SSI were internal fixation infections (46.25%), superficial SSIs (25.2%) and Prosthetic joint infections (18.75%). Obesity and tobacco use were found to be significant risk factors of orthopaedic SSI. The most common perioperative prophylaxis used was IV cefuroxime. Majority of the cases (86.5%) received prolonged prophylactic antibiotics. The most common causative agent was Staphylococcus aureus (31.25%), followed by Pseudomonas aeruginosa (26.25%) and Enterobacter spp (7.5%). Methicillin-resistant Staphylococcus aureus (MRSA) accounted for 20% of the S. aureus infections. Up to 19.4% of the Gram-negative organisms are multidrug resistant. The higher rate of isolation of organisms resistant to the prophylactic antibiotics being used may be related to the prolonged use of prophylactic antibiotics, which exerted selective pressure for the acquisition of resistant organisms.

Conclusion

Despite its relatively low prevalence in our local institution and worldwide, the prevention of SSI in orthopaedic practice is crucial to avoid morbidity, mortality and high healthcare cost. This may be achieved by control of modifiable risk factors such as obesity and tobacco use, appropriate use of prophylactic antibiotics and implementation of good surgical and infection control practices.

Recrudescent infection after deep brain stimulator reimplantation

OBJECTIVE

The efficacy of deep brain stimulation (DBS) in treating the symptoms of movement disorders can be life changing for patients. Thus, the 5%-15% incidence of stimulator-related infection requiring removal of the device can be particularly disheartening. Although DBS system reimplantation is generally successful, this is not always the case. The literature is replete with publications describing the incidence of infection and the associated features. However, the literature is sparse in terms of information on the incidence of recurrent or recrudescent infection after system reimplantation. The goal of this paper was to evaluate factors leading to unsuccessful reimplantation of a DBS system following initial infection.

METHODS

Data were reviewed for all DBS procedures performed by one surgeon (K.L.H.) over 19 years including the infectious agent, location of infection, treatment regimen, and subsequent reimplantation of a DBS system and long-term outcome.

RESULTS

In this series of 558 patients who had undergone DBS surgery, 37 (6.6%) subsequently developed an infection. Infections with methicillin-sensitive Staphylococcus aureus, Enterobacter species, or coagulase-negative staphylococci were predominant. Four patients had cerebritis, one had meningitis, and the rest had soft tissue infections of the pocket or scalp. All had their entire DBS system explanted, followed by 4-6 weeks of intravenous antibiotics and surveillance for recrudescence for an additional period of at least 30 days. Twenty-five patients subsequently underwent DBS system reimplantation, and the procedure was successful in 22. Three of the 4 patients with cerebritis developed a subsequent wound infection after system reimplantation. None of the other 22 patients developed a recurrence. The odds ratio for developing a recurrent infection after cerebritis was 28.5 (95% CI 1.931-420.5, p = 0.007).

CONCLUSIONS

This study, the largest series of DBS system reimplantations following infection, demonstrated that most patients can have successful reimplantations without recurrent infection. However, patients who have had DBS-related cerebritis have a nearly 30-fold increased risk of developing reinfection after reimplantation. Alternative strategies for these patients are discussed.

Effective Clinical Pathway Improves Interprofessional Collaboration and Reduces Antibiotics Prophylaxis Use in Orthopedic Surgery in Hospitals in Indonesia

Clinical pathways can improve the quality of health services. The effectiveness and impact of implementing clinical pathways are controversial. The preparation of clinical pathways not only enacts therapeutic guidelines but requires mutual agreement in accordance with the roles, duties, and contributions of each profession in the team. This study aimed to investigate the perception of interprofessional collaboration practices and the impact of clinical pathway implementation on collaborative and Defined Daily Dose (DDD) prophylactic antibiotics per 100 bed-days in orthopedic surgery. The Collaborative Practice Assessment Tool (CPAT) questionnaire was used as a tool to measure healthcare’ perceptions of collaborative practice. The clinical pathway (CP) in this study was adapted from existing CPs published by the Indonesian Orthopaedic Association (Perhimpunan Dokter Spesialis Orthopaedi dan Traumatologi Indonesia, PABOI) and was commended by local domestic surgeons and orthopedic bodies. We then compared post-implementation results with pre-implementation clinical pathway data using ANCOVA to explore our categorical data and its influence towards CPAT response. ANOVA was then employed for aggregated DDD per 100 bed-days to compare pre and post intervention. The results showed that the relationships among members were associated with the working length. Six to ten years of working had a significantly better relationship among members than those who have worked one to five years. Interestingly, pharmacists’ leadership score was significantly lower than other professions. The clinical pathway implementation reduced barriers in team collaboration, improved team coordination and organization, and reduced third-generation cephalosporin use for prophylaxis in surgery (pre: 59 DDD per 100 bed-days; post: 28 DDD per 100 bed-days). This shows that the clinical pathway could benefit antibiotic stewardship in improving antibiotic prescription, therefore reducing the incidence of resistant bacteria.

The Effect of Pharmacist-Led Intervention on Surgical Antibacterial Prophylaxis (SAP) at an Orthopedic Unit

Perioperative antibiotic use is a common reason for antibiotic misuse. Evidence suggests that adherence to SAP guidelines may improve outcomes. The purpose of this study was to analyze the impact of pharmacist-led antibiotic stewardship interventions on SAP guideline compliance. The study was conducted at an Orthopedic Department of a tertiary care medical center. SAP compliance and antibiotic exposure in the pre-intervention and intervention period was compared using chi-square, Fisher exact, and Mann-Whitney tests, as appropriate. Prophylactic antibiotic use in orthopedic joint arthroplasties (overall guideline adherence: agent, dose, frequency, duration), clinical outcomes (length of stay-LOS, number of surgical site infections-SSIs), antibiotic exposure and direct antibiotic costs were compared between pre-intervention and intervention periods. Significant improvement in mean SAP duration (by 42.9%, 4.08 ± 2.08 vs. 2.08 ± 1.90 days, p ˂ 0.001), and overall guideline adherence regarding antibiotic use (by 56.2%, from 2% to 58.2%, p ˂ 0.001) were observed. A significant decrease was observed in antibiotic exposure in SAP (by 41%, from 6.07 ± 0.05 to 3.58 ± 4.33 DDD/patient, p ˂ 0.001), average prophylactic antibiotic cost (by 54.8%, 9278.79 ± 6094.29 vs. 3598.16 ± 3354.55 HUF/patient), and mean LOS (by 37.2%, from 11.22 ± 6.96 to 7.62 ± 3.02 days, p < 0.001); and a slight decrease in the number of confirmed SSIs was found between the two periods (by 1.8%, from 3% to 1.2%, p = 0.21). Continuous presence of the clinical pharmacist led to significant improvement in SAP guideline adherence, which was accompanied by decreased antibiotic exposure and cost.