Will 1-stage implant salvage after periprosthetic breast infection ever be routine? A 6-year successful experience

Monitoring and Management of Infection following Prepectoral Implant-based Breast Reconstruction: Retrospective Analysis of Conservative Treatment Versus Implant Removal

Background

Infection following implant-based breast reconstruction (IBBR) represents a major complication, potentially leading to prosthesis removal. However, no clear protocol for its prevention and management exists. This study aimed to evaluate the efficacy of conservative treatment methods in preventing implant removal and analyze factors responsible for implant loss in the context of prepectoral IBBR.

Methods

A single-institution retrospective review chart of patients undergoing immediate prepectoral IBBR for breast cancer between October 2020 and January 2024 was performed. The inclusion criteria were the presence of at least one of the following postoperative complications: seromas, cellulitis, clinically suspected prosthesis infection, and confirmed periprosthetic infection. A comparative analysis between patients with successful conservative treatment (ultrasound-guided aspiration and antibiotic therapy) and patients undergoing implant removal was performed.

Results

A total of 219 immediate prepectoral IBBR cases were identified, 38 of which met inclusion criteria. Implant removal was required in 11 cases, whereas implant retention was achieved in 27 patients with conservative treatment. Implants were invariably removed when bacterial cultures were positive (P < 0.05). Conversely, when pathogens were not identified, the likelihood of implant removal decreased significantly (P < 0.05). Conservative treatment allowed implant salvage in all patients presenting with postoperative seroma alone, without other associated complications (P < 0.05).

Conclusions

This study suggests that when bacterial cultures are positive, implant removal is unavoidable. Conversely, noninfected seromas correlated with implant salvage. Infections from Bacillus pumilus and Corynebacterium pseudodiphtheriticum are reported for the first time.

Negative Pressure Wound Therapy with Instillation for Periprosthetic Infection after Breast Reconstruction: A Systematic Review

Background

Periprosthetic infection after breast reconstruction is not uncommon and can result in loss of the implant pocket and negative patient outcomes. Management of these infections typically involves removal of the prosthesis, treatment with antibiotics, and delayed reconstruction upon infection resolution. The impact of adjunctive use of negative pressure wound therapy with instillation and dwell (NPWTi-d) on breast pocket salvage rates, time to implant reinsertion, and related outcomes was examined.

Methods

A systematic literature search using PubMed, Cochrane, OVID, Scopus, and Embase was conducted to identify peer-reviewed articles written in English and published between January 2004 and April 2023 that examined NPWTi-d use in the breast pocket with a history of periprosthetic infection after breast reconstruction.

Results

Of the 1703 publications, 6 studies met inclusion criteria, representing 115 patients and 122 breasts. The overall breast pocket salvage rate with NPWTi-d across studies was approximately 92%. In the 6 studies that included prosthesis type and radiation history, overall salvage rates were 97.8% (45 of 46) for pockets containing implants and 93.8% (15 of 16) for pockets containing tissue expanders. Salvage rates were 85.7% (12 of 14) and 91.7% (53 of 58) for irradiated and nonirradiated breasts, respectively. Mean time to implant reinsertion ranged from 2.3 to 10.3 days.

Conclusions

In this review, antibiotic therapy along with adjunctive use of NPWTi-d for periprosthetic infections after breast reconstructions was associated with high rates of breast pocket salvage and reduced time to implant reinsertion. Larger prospective and randomized trials are needed to better understand and optimize the effectiveness of NPWTi-d in this population.

A Simple Technique Using Peri-Prosthetic Irrigation Improves Implant Salvage Rates in Immediate Implant-Based Breast Reconstruction

Background and objectives: Implant-related complications leading to implant loss contribute to major morbidity in immediate breast reconstruction (IBR). Various techniques have been advocated to improve rates of reconstruction salvage. The objective of our study was to assess if a peri-prosthetic irrigation system was an effective adjunct to the conventional wash-out technique in improving reconstruction salvage rates. Methods: The study included patients who had immediate implant-based breast reconstruction from January 2015 to November 2020. The conventional technique of reconstruction salvage, using debridement, wash-out, and implant/expander exchange with systemic use of antibiotics, was performed for patients undergoing exploration for infection until May 2019. A simple technique using a continuous peri-prosthetic irrigation system with vancomycin (1 g/L normal saline over 24 h) for 2 days was added as an adjunct to the conventional technique. Treatment details and clinical outcomes were compared between the groups. The study was approved by the Clinical Governance department. Results: During the study period, 335 patients underwent IBR. A total of 65 patients (19.4%) returned to the theatre due to post-operative complications, of which 45 (13.4%) were due to infection. A conventional technique was used in 38 (84.4%) patients, and peri-prosthetic irrigation was used as an adjunct in 7 patients (15.6%). A total of 16 (42.1%) in the conventional group and all 7 (100%) in the irrigation group had successful reconstruction salvage. No patients had complications due to antibiotic irrigation. Conclusions: The peri-prosthetic irrigation system is a simple, safe, and effective adjunct to conventional techniques in improving reconstruction salvage in IBR.

Management of periprosthetic breast infection: a systematic review and meta-analysis

BACKGROUND

The current management of an infected breast implant is varied. This systematic review and meta-analysis aim to synthesise the current evidence and establish the efficacy of the various managements of infected breast implants.

METHODS

A comprehensive search in the MEDLINE, EMBASE and CENTRAL databases was conducted for primary clinical studies that report on the management of infected breast implants from 1946 to September 2019. The primary outcome measure was the proportion of patients with successful treatment.

RESULTS

Nineteen articles that involve 1044 patients were included. Overall, 29.00% (95% CI = from 11.51% to 50.58%) of the patients with mild infection were treated exclusively with antibiotics, of which, 81.41% (95% CI = from 57.82% to 96.63%) were successfully treated without the need for surgical intervention. Another 39.01% (95% CI = from 21.41% to 58.23%) of the patients underwent surgical salvage of the infected breast implants, of which 84.56% (95% CI = from 74.92% to 92.20%) successfully retained the salvaged implants without infection recurrence. Meanwhile, 35.01% (95% CI = from 27.01% to 43.57%) of the patients underwent explantation of the infected breast implant, of which, only 39.02% (95% CI = from 23.93% to 55.28%) had re-insertion of a new implant on a later date and 4.99% (95% CI = from 1.66% to 9.99%) of these patients had recurrence of infection requiring removal of the infected implant. The commonest complication was capsular contracture, which was reported in 10.78% (95% CI = from 4.41% to 19.49%) of the patients. Changes in the quality of life and cost implications were not reported.

CONCLUSION

This study consolidates current available evidence on the management of infected breast implants, which could assist decision-making and improve patient education; however, current data are limited because of the lack of level-1 evidence.

Use of Negative-Pressure Wound Therapy With Instillation and Dwell in Breast Reconstruction

SUMMARY

The use of negative-pressure wound therapy (NPWT) has expanded over the last 3 decades, paralleled and documented by an increase in research. This article discusses the evolution and current applications of NPWT in modern breast reconstruction. Negative-pressure wound therapy with instillation and dwell (NPWTi-d) technology can be used to remove infectious material, facilitate salvaging compromised tissue, and stabilize the soft-tissue environment. Published consensus NPWTi-d guidelines can aid in treatment selection and implementation of this new technology. The therapeutic approach of simultaneously removing infectious material and actively improving mastectomy flap perfusion and thickness is a burgeoning concept, and illustrative cases are presented. NPWTi-d preliminary use has led to reconstruction salvage with reproducible early experience and outcomes, and it is hoped that it will raise interest and awareness of this promising application of the technology to improve breast reconstruction outcomes.

Surgeons' Dilemma: Treatment of Implant-Associated Infection in the Cosmetic Breast Augmentation Patient

BACKGROUND

Augmentation mammaplasty is the most common plastic surgical procedure performed in the USA. The management of severe implant-associated infection is a challenge, and the traditional two-stage treatment is associated with significant limitations. The aim of this literature review is to provide a comprehensive analysis of all studies dealing with the management of severe infection or implant exposure following cosmetic breast augmentation.

METHODS

The PubMed and Cochrane databases were searched through February 2018 for studies on the management of severe infection and threatened or actual implant exposure following primary augmentation mammaplasty. Search terms used were "breast implant," "breast prosthesis," "breast augmentation," "breast augmentation complications," "infected implant," "implant salvage" and "implant exposure."

RESULTS

Five articles met inclusion criteria. There was inconsistency in the reporting of several key factors, such as the antibiotic regimens employed, culture sensitivities, time from diagnosis to treatment, implant characteristics, as well as the precise treatment of the capsule and pocket. A total of 58 implants were treated, of which 37 (63.8%) were exposed in the setting of infection and 21 (36.2%) were infected without exposure. One-stage implant salvage was employed in 31 implants and was successful in all. The capsular contracture rate with this approach was 6.5%. Antibiotic-alone, non-operative treatment was employed in the salvage of 22 implants, with success and capsular contracture rates of 77.3 and 13.6%, respectively. In the setting of severe periprosthetic infection in the absence of implant exposure, antibiotic-alone treatment was successful in the salvage of 13 out of 14 implants (92.9%).

CONCLUSIONS

The inconsistency and paucity of the data in the literature preclude definitive conclusions with regard to the optimal management of the threatened implant following augmentation mammaplasty. Given the excellent salvage rates in this setting, a more prominent role and liberal utilization of implant salvage are proposed.

LEVEL OF EVIDENCE IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Vertical Augmentation Mastopexy with Implant Isolation and Tension Management

Supplemental Digital Content is available in the text.

Background:

The increasingly popular vertical method of mastopexy is less commonly the technique of choice in augmentation mastopexy possibly due to concerns raised in the literature. The purpose of this report is to evaluate safety and satisfaction of the author’s variation of the vertical method in this combination surgery. It includes unique tension management steps and total implant isolation from cut parenchyma.

Methods:

A retrospective analysis was done of 105 consecutive patients treated with the author’s method over an 8 year 6 month period. Clinical outcomes were examined, and a Breast-Q survey and Spear’s 2004 survey were mailed to all patients who agreed to it by phone.

Results:

There were no hematomas or delayed healing but one pulmonary embolus treated as an outpatient and one infection appearing 6 weeks postoperatively. There were only 3 grade 3 or 4 capsular contractures. Sixty-seven patients consented to the survey and 36 were returned. With Breast-Q, there was a mean score of 82.78 for outcome satisfaction and 75.94 for satisfaction with breasts. Spear’s survey confirmed high satisfaction with 90.9% indicating that they were satisfied or extremely satisfied. Comparison with Spear’s own surgical results did not reach statistical significance.

Conclusions:

The author’s specific adaptation of vertical augmentation mastopexy appears to be very safe and successfully addresses a variety of healing, tension, and exposure concerns mentioned in the literature. Implant isolation may decrease capsular contracture rate. Both Breast-Q survey and Spear’s more specific survey indicate high patient satisfaction.

Unraveling Factors Influencing Early Seroma Formation in Breast Augmentation Surgery

Background

It is often assumed that seroma formation trails closely behind with incidence rates reported at 1 to 2%. Seroma is highly problematic for both the surgeon and patient and results in both patient anxiety and discomfort, succeeded by frequent outpatient visits, follow-up treatment, increased costs, and potentially hampered aesthetic outcomes. Consequently, it is now more important than ever to study seroma and to assess its pathophysiology and mechanisms of prevention.

Objectives

The aim of this study was to isolate and identify risk factors that may be associated with early seroma formation.

Methods

The authors reviewed 539 female patients who had undergone bilateral breast augmentation with silicone cohesive gel implants in a period of 12 months. Five possible risk factors were isolated for analysis: patient’s age, body mass index (BMI), smoking habit, implant pocket position, and implant size. A total of 15 patients developed early seromas within the one-year postoperative period.

Results

Using exact logistic regression with the independent variables treated as binary variables, we found that smoking, BMI, and pocket are associated with increased risk of seroma while we cannot reject the hypothesis that pocket size and age do not affect the development of seroma at 5% significance level.

Conclusions

A high BMI, large implant size, submammary pocket, and smoking are factors significantly associated with seroma development whilst age is not. Smoking however was found to be the most detrimental factor as it significantly amplified the effects of other variables.

Level of Evidence

2

Reducing implant loss rates in immediate breast reconstructions

UK best practice guidelines for oncoplastic breast reconstruction were published in 2012. Implant-based reconstruction quality indicator (QI) targets for readmission, return to theatre and implant loss rates were set at 5% by 3 months, along with guidance to achieve these targets. The aims of this study were to quantify complication rates following implant-based reconstruction before and after the implementation of the guidelines. A retrospective audit of 86 patients with 106 implants in the 12 months to June 2013 was performed, C1. Following institutional changes including reducing antibiotic usage, a prospective audit was performed on 89 patients with 105 implants to June 2014, C2. Extended follow-up of salvaged implants was also performed. Demographics were not significantly different between the two cohorts apart from smoking. Implant loss rates fell from 7.5%(C1) to 1.9%(C2), p = 0.054 but at the cost of an increase in the return to theatre rate (14.2%-18%, p > 0.05). The implant salvage rate increased from 47% in C1 to 89.5% in C2, however, 3 of the implants that were salvaged were lost in the long term giving an overall salvage rate of 82.4% in C2. While an implant loss rate of <5% at 3 months appears achievable with less antibiotic use, this was made possible by the institution of an aggressive readmission and salvage policy. We would question the QI standards for readmission and return to theatre for immediate implant-based breast reconstruction, given that our implant loss rate of 1.9% was achieved with a return to theatre rate of 18%.

Salvage of Infected Prosthetic Breast Reconstructions

Periprosthetic infection is a major complication in breast reconstruction, leading to implant loss and delayed and sometimes abandoned reconstruction. Traditional management of persistent infections requires explantation followed by secondary reconstruction after 6 months of delay. Although effective in treating the infection, this approach often leads to distortion and/or loss of tissue envelope, making secondary reconstruction very difficult. As a result, there is significant interest in salvaging infected prosthetic breast reconstructions. Recent studies reported variable success through systemic antibiotic therapy and surgical interventions. The aim of this article is to review the management of periprosthetic infection and to provide a potential salvage algorithm.

Breast Implant-Associated Infections: The Role of the National Surgical Quality Improvement Program and the Local Microbiome

BACKGROUND

The most common cause of surgical readmission after breast implant surgery remains infection. Six causative organisms are principally involved: Staphylococcus epidermidis and S. aureus, Escherichia, Pseudomonas, Propionibacterium, and Corynebacterium. The authors investigated the infection patterns and antibiotic sensitivities to characterize their local microbiome and determine ideal antibiotic selection.

METHODS

A retrospective review of 2285 consecutive implant-based breast procedures was performed. Included surgical procedures were immediate and delayed breast reconstruction, tissue expander exchange, and cosmetic augmentation. Patient demographics, chemotherapy and/or irradiation status, implant characteristics, explantation reason, time to infection, microbiological data, and antibiotic sensitivities were reviewed.

RESULTS

Forty-seven patients (2.1 percent) required inpatient admission for antibiotics, operative explantation, or drainage by interventional radiology. The infection rate varied depending on surgical procedure, with the highest rate seen in mastectomy and immediate tissue expander reconstruction (6.1 percent). The mean time to explantation was 41 days. Only 50 percent of infections occurred within 30 days of the indexed National Surgical Quality Improvement Program operation. The most commonly isolated organisms were coagulase-negative Staphylococcus (27 percent), methicillin-sensitive S. aureus (25 percent), methicillin-resistant S. aureus (7 percent), Pseudomonas (7 percent), and Peptostreptococcus (7 percent). All Gram-positive organisms were sensitive to vancomycin, linezolid, tetracycline, and doxycycline; all Gram-negative organisms were sensitive to gentamicin and cefepime.

CONCLUSIONS

Empiric antibiotics should be vancomycin (with the possible inclusion of gentamicin) based on their broad effectiveness against the authors' unique microbiome. Minor infections should be treated with tetracycline or doxycycline as a second-line agent. National Surgical Quality Improvement Program data are adequate for monitoring and comparing breast infections but certainly not comprehensive.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, IV.