Subgroup Analysis of Antibiotic Treatment for Skin Abscesses

Purulent Skin and Soft Tissue Infections, Challenging the Practice of Incision and Drainage: A Scoping Review

Aim

To generate a landscape of the current knowledge in the interventional management and outcomes of purulent skin and soft tissue infections.

Design

This study is a scoping review.

Methods

Electronic searches were undertaken using CINAHL, Medline, Cochrane Library, British Nursing Index, Science Direct, the National Health Service knowledge and library hub, ClinicalTrials.gov, and MedNar. The population, concept, context framework, and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews were utilised, supporting a rigorous appraisal and synthesis of literature. Data Sources. The initial search and synthesis of literature were completed in January 2022 with repeat searches completed in March 2022 and July 2023. There were no imposed chronological parameters placed on the returned literature.

Results

Nineteen papers were reviewed. Incision and drainage with primary closure, needle aspiration, loop drainage, catheter drainage, and suction drainage are viable adjuncts or alternatives to the traditional surgical management of skin and soft tissue abscesses.

Conclusion

Despite the empirically favourable alternatives to the incision and drainage technique demonstrated, this does not appear to be driving a change in clinical practice. Future research must now look to mixed and qualitative evidence to understand the causative mechanisms of incision and drainage and its ritualistic practice. Implications. Ritual surgical practices must be challenged if nurses are to improve the treatment and management of this patient group. This will lead to further practice innovation. Impact: This study explored the challenges posed to patients, clinicians, nurses, and stakeholders, resulting from the ritualistic practice of the incision and drainage technique in purulent skin or soft tissue abscesses. Empirically and holistically viable alternatives were identified, impacting all identified entities and recommending a wider holistic study. Reporting Method. Adherence to EQUATOR guidance was achieved through the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews.

Phage Therapy as an Alternative Treatment Modality for Resistant Staphylococcus aureus Infections

The production and use of antibiotics increased significantly after the Second World War due to their effectiveness against bacterial infections. However, bacterial resistance also emerged and has now become an important global issue. Those most in need are typically high-risk and include individuals who experience burns and other wounds, as well as those with pulmonary infections caused by antibiotic-resistant bacteria, such as Pseudomonas aeruginosa, Acinetobacter sp, and Staphylococci. With investment to develop new antibiotics waning, finding and developing alternative therapeutic strategies to tackle this issue is imperative. One option remerging in popularity is bacteriophage (phage) therapy. This review focuses on Staphylococcus aureus and how it has developed resistance to antibiotics. It also discusses the potential of phage therapy in this setting and its appropriateness in high-risk people, such as those with cystic fibrosis, where it typically forms a biofilm.

Antibiotic prescribing and outcomes for patients with uncomplicated purulent skin and soft tissue infections in the emergency department

INTRODUCTION

Current guidelines suggest adjuvant antibiotics after incision and drainage (I&D) of small, uncomplicated abscesses may improve patient outcomes, minimize pain, and prevent recurrence. The objective was to explore antibiotic prescribing at ED discharge and describe patient outcomes.

METHODS

This was a health records review of adult patients (≥ 18 years) discharged from an academic hospital ED (annual census 65,000) over a 2-year period with diagnosis of an uncomplicated skin abscess. Outcomes included any unplanned return ED visits within 30 days, repeat I&D, and escalation to intravenous (IV) antibiotics.

RESULTS

Of 389 ED visits, 85.6% patients underwent I&D, of which 62.2% were prescribed antibiotics at discharge. Of these patients, 36.7% received guideline recommended antibiotics (TMP-SMX or clindamycin). Of all patients who underwent I&D, 13.2% had an unplanned return ED visit within 30 days, 6.9% required repeat I&D, and 0.6% patients were escalated to IV antibiotics. Patients treated with cefalexin were more likely to have an unplanned return ED visit within 30 days (20.0 vs 5.3%; Δ14.7, 95% CI 4.6-24.4), and were more likely to have a repeat I&D within 30 days (13.7 vs 0%; Δ13.7, 95% CI 6.4-22.0), compared to patients prescribed guideline recommended antibiotics. Treatment with guideline recommended antibiotics reduced treatment failure significantly in MRSA positive patients (0.0 vs 44.4%; Δ44.4, 95% CI 13.4-73.3).

CONCLUSIONS

Antibiotics were prescribed for most abscesses that underwent I&D. Less than half of the patients received antibiotics that were guideline recommended. Compared to those who received cefalexin, patients prescribed TMP-SMX or clindamycin had fewer return ED visits and were less likely to have a repeat I&D within 30 days. However, adjuvant antibiotic use did not significantly improve outcomes overall, with most patients not requiring a change in management irrespective of antibiotic use.

Skin and Soft Tissue Infection Treatment and Prevention Practices by Pediatric Emergency Medicine Providers

OBJECTIVE

The aim of the study was to evaluate skin and soft tissue infection (SSTI) treatment and prevention practices among pediatric emergency medicine (PEM) clinicians in the context of current clinical practice guidelines and contemporary evidence.

METHODS

This was a cross-sectional survey of PEM clinicians belonging to the American Academy of Pediatrics Section on Emergency Medicine Survey listserv. Four varying hypothetical clinical scenarios of children with SSTI were posed to respondents; subsequent items assessed SSTI treatment and prevention practices. Provider demographics were collected.

RESULTS

Of 160 survey respondents, more than half stated that they would prescribe oral antibiotics for each clinical scenario, particularly for more complex presentations (small uncomplicated abscess, 51.8%; large uncomplicated abscess, 71.5%; recurrent abscess, 83.5%; febrile abscess, 90.3%; P < 0.001). Most commonly selected antibiotics were clindamycin and trimethoprim-sulfamethoxazole. Across scenarios, more than 80% selected a duration of treatment 7 days or more. Of the 121 respondents who prescribe preventive measures, 85.1% recommend hygiene measures; 52.5% would prescribe decolonization with topical antibiotic ointment and 77.5% would recommend antiseptic body washes. Half of the respondents reported that their institution has standard guidance for SSTI management.

CONCLUSIONS

Although current evidence supports adjuvant antibiotics for all drained SSTI and decolonization for the index patient and household contacts, PEM clinicians do not consistently adhere to these recommendations. In light of these findings, development and implementation of institutional guidelines are necessary to aid PEM clinicians' point-of-care decision making and improving evidence-based practice.

Management and Prevention of Staphylococcus aureus Infections in Children

Staphylococcus aureus is a common skin commensal with the potential to cause severe infections resulting in significant morbidity and mortality. Up to 30% of individuals are colonized with S aureus, though infection typically does not occur without skin barrier disruption. Infection management includes promptly addressing the source of infection, including sites of metastatic infection, and initiation of effective antibiotics, which should be selected based on local antibiotic susceptibility patterns. Given that S aureus colonization is a risk factor for infection, preventive strategies are aimed at optimizing hygiene measures and decolonization regimens for outpatients and critically ill children with prolonged hospitalizations.

Antibiotic Duration, but Not Abscess Size, Impacts Clinical Cure of Limited Skin and Soft Tissue Infection After Incision and Drainage

Antibiotics are frequently prescribed following incision and drainage of cutaneous abscesses. In subgroup analyses from a recent clinical trial, we observed higher likelihood of cure with antibiotic courses beyond 5 or 7 days (up to 10). Among this cohort, for abscesses ≤5 cm, size did not modify the antibiotic effect.

Treatment of methicillin-resistant Staphylococcus aureus (MRSA): updated guidelines from the UK

These evidence-based guidelines are an updated version of those issued in 2008. They have been produced following a review of the published literature (2007-18) pertaining to the treatment of infections caused by MRSA. The guidelines update, where appropriate, previous recommendations, taking into account changes in the UK epidemiology of MRSA, ongoing national surveillance data and the efficacy of novel anti-staphylococcal agents licensed for use in the UK. Emerging therapies that have not been licensed for use in the UK at the time of the review have also been assessed.

Narrative Review: The Process of Expanding the Manual of Antimicrobial Stewardship by the Government of Japan

The Ministry of Health, Labour and Welfare has published the Manual of Antimicrobial Stewardship (1st edition) in June 2017 to improve the prescribing practice of antimicrobials for immunocompetent adult and pediatric (both school-aged and older children) patients. Due to the increasing demand for further promoting outpatient antimicrobial stewardship, we conducted a literature and national guideline review to identify the area of need. The results of our review revealed a high antimicrobial prescription rate in the Japanese pediatric population. Furthermore, although the Japanese clinical guidelines/guidance covered the fields of almost all infectious diseases, no system exists to estimate the incidence and treatment patterns of important infectious diseases such as asymptomatic bacteriuria, skin and soft tissue infections, and dental practices in Japan. Therefore, addressing the issues of both establishing surveillance systems and the implementation of guidelines/guidance can be the next step to promote further outpatient antimicrobial stewardship.

Staphylococcal Skin and Soft Tissue Infections

Staphylococcus aureus is the most common bacteria causing purulent skin and soft tissue infections. Many disease-causing S aureus strains are methicillin resistant; thus, empiric therapy should be given to cover methicillin-resistant S aureus. Bacterial wound cultures are important for characterizing local susceptibility patterns. Definitive antibiotic therapy is warranted, although there are no compelling data demonstrating superiority of any one antibiotic over another. Antibiotic choice is predicated by the infection severity, local susceptibility patterns, and drug-related safety, tolerability, and cost. Response to therapy is expected within the first days; 5 to 7 days of therapy is typically adequate to achieve cure.

Abscess Management: An Evidence-Based Review for Emergency Medicine Clinicians

BACKGROUND

Abscesses are commonly evaluated and managed in the emergency department. Recent research has evaluated the use of ultrasonography, packing, incision and drainage (I&D), and antibiotics. There are evidence-based nuances to the management of specific types of abscesses, such as Bartholin, breast, dental, hidradenitis suppurativa, peritonsillar, and pilonidal abscesses.

OBJECTIVE

This review provides emergency medicine clinicians with a summary of the current literature regarding abscess management in the emergency department.

DISCUSSION

Ultrasound is valuable in diagnosing abscesses that are not clinically evident and in guiding I&D procedures. Although I&D is traditionally followed by packing, this practice may be unnecessary for small abscesses. Antibiotics, needle aspiration, and loop drainage are suitable alternatives to I&D of abscesses with certain characteristics. Oral antibiotics can improve outcomes after I&D, although this improvement must be weighed against potential risks. Many strategies are useful in managing Bartholin abscesses, with the Word catheter proving consistently effective. Needle aspiration is the recommended first-line therapy for small breast abscesses. Dental abscesses are often diagnosed with clinical examination alone, but ultrasound may be a useful adjunct. Acute abscess formation caused by hidradenitis suppurativa should be managed surgically by excision when possible, because I&D has a high rate of abscess recurrence. Peritonsillar abscesses can be diagnosed with either intraoral or transcervical ultrasound if clinical examination is inconclusive. Needle aspiration and I&D are both suitable for the management of peritonsillar abscesses. Pilonidal abscesses have traditionally been managed with I&D, but needle aspiration with antibiotics may be a suitable alternative.

CONCLUSIONS

This review evaluates the recent literature surrounding abscess management for emergency medicine clinicians.

Skin and Soft Tissue Infection Treatment and Prevention Practices by Pediatric Infectious Diseases Providers

We surveyed 323 members of the Pediatric Infectious Diseases Society about their clinical practices for skin abscess management based on the 2011 Infectious Diseases Society of America guidelines and contemporary evidence. Despite this guideline and recent randomized trials, variability exists among pediatric infectious diseases clinicians in current skin and soft tissue infection management practices.

Prevention Strategies for Recurrent Community-Associated Staphylococcus aureus Skin and Soft Tissue Infections

PURPOSE OF REVIEW

Staphylococcus aureus skin and soft tissue infections (SSTI) are a major source of morbidity. More than half of patients experiencing SSTI will have at least one recurrent infection. These infections frequently cluster in households. Given the burden these infections pose to patients and healthcare, prevention strategies are of major clinical importance and represent an active area of research. Bacterial colonization is frequently an early and critical step in the pathogenesis of infection. As such, strategies to prevent reinfection have aimed to decrease staphylococcal colonization of the skin and mucus membranes, a process referred to as decolonization.

RECENT FINDINGS

Treatment of acute SSTI with incision and drainage and systemic antibiotics is the mainstay of therapy for healing of the acute infection. Systemic antibiotics also provide benefit through reduced incidence of recurrent SSTI. Education for patients and families regarding optimization of personal and household hygiene measures, and avoidance of sharing personal hygiene items, is an essential component in prevention efforts. For patients experiencing recurrent SSTI, or in households in which multiple members have experienced SSTI, decolonization should be recommended for all household members. A recommended decolonization regimen includes application of intranasal mupirocin and antiseptic body washes with chlorhexidine or dilute bleach water baths. For patients who continue to experience recurrent SSTI, periodic decolonization should be considered. Personal decolonization with topical antimicrobials and antiseptics reduces the incidence of recurrent S. aureus SSTI. Future avenues for investigation include strategies for household environmental decontamination as well as manipulation of the host microbiota.

Antimicrobial Stewardship in the Emergency Department

The emergency department (ED) is the hub of the US health care system. Acute infectious diseases are frequently encountered in the ED setting, making this a critical setting for antimicrobial stewardship efforts. Systems level and behavioral stewardship interventions have demonstrated success in the ED setting but successful implementation depends on institutional support and the presence of a physician champion. Antimicrobial stewardship efforts in the ED should target high-impact areas: antibiotic prescribing for nonindicated respiratory tract conditions, such as bronchitis and sinusitis; overtreatment of asymptomatic bacteriuria; and using two antibiotics (double coverage) for uncomplicated cases of cellulitis or abscess.

Systemic Antibiotics for the Treatment of Skin and Soft Tissue Abscesses: A Systematic Review and Meta-Analysis

STUDY OBJECTIVE

The addition of antibiotics to standard incision and drainage is controversial, with earlier studies demonstrating no significant benefit. However, 2 large, multicenter trials have recently been published that have challenged the previous literature. The goal of this review was to determine whether systemic antibiotics for abscesses after incision and drainage improve cure rates.

METHODS

PubMed, the Cumulative Index of Nursing and Allied Health Literature, Scopus, the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, and bibliographies of selected articles were assessed for all randomized controlled trials comparing adjuvant antibiotics with placebo in the treatment of drained abscesses, with an outcome of treatment failure assessed within 21 days. Data were dual extracted into a predefined worksheet and quality analysis was performed with the Cochrane Risk of Bias tool.

RESULTS

Four studies (n=2,406 participants) were identified. There were 89 treatment failures (7.7%) in the antibiotic group and 150 (16.1%) in the placebo group. The calculated risk difference was 7.4% (95% confidence interval [CI] 2.8% to 12.1%), with an odds ratio for clinical cure of 2.32 (95% CI 1.75 to 3.08) in favor of the antibiotic group. There was also a decreased incidence of new lesions in the antibiotic group (risk difference -10.0%, 95% CI -12.8% to -7.2%; odds ratio 0.32, 95% CI 0.23 to 0.44), with a minimally increased risk of minor adverse events (risk difference 4.4%, 95% CI 1.0% to 7.8%; odds ratio 1.29, 95% CI 1.06 to 1.58).

CONCLUSION

The use of systemic antibiotics for skin and soft tissue abscesses after incision and drainage resulted in an increased rate of clinical cure. Providers should consider the use of antibiotics while balancing the risk of adverse events.