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Wynn J, Kelsey E, McLeod K. Treatment of the infected sacral nerve stimulator: A scoping review. Neurourol Urodyn 2024; 43:579-594. [PMID: 38318878 DOI: 10.1002/nau.25411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/13/2024] [Accepted: 01/24/2024] [Indexed: 02/07/2024]
Abstract
BACKGROUND Sacral nerve stimulators (SNSs) are a widely accepted, efficacious surgical option to treat patients who have failed conservative management for overactive bladder, nonobstructive urinary retention, fecal incontinence, or pelvic pain. As with all implanted devices, there are associated risks for surgical site and implant infections. There are currently no clear published data or guidelines regarding treating such infections. AIMS We present a scoping review aiming to examine the existing literature on the treatment approaches of infected SNSs. METHODS A scoping review was conducted using Preferred Reporting Items for Systematic Review and Meta-Analysis. The search strategy focused on "sacral modulation," and "infection," and "explantation," and conservative management methods such as "antibiotics." A search was conducted on medical databases, and a grey literature search was performed. RESULTS Thirty articles were included for data extraction. Articles were published between 2006 and 2022. Outcomes were reported for 7446 patients. Two hundred and seventy-four infection events were reported, giving an overall 3.7% infection rate. Most infection events were treated with explantation, although there is some discussion on the role of conservative management using oral and intravenous antibiotics in the literature. Articles also discussed considerations for future reimplantation after explantation of SNS. CONCLUSIONS There are currently no treatment protocols in the literature to help guide whether a patient is suited to conservative or surgical management. There is future scope for developing treatment algorithms to guide clinicians for optimal treatment of infected sacral neuromodulation devices.
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Affiliation(s)
- Jessica Wynn
- Department of Urology, University Hospital Geelong, Barwon Health, Geelong, Australia
| | - Ellen Kelsey
- Department of Urology, University Hospital Geelong, Barwon Health, Geelong, Australia
| | - Kathryn McLeod
- Department of Urology, University Hospital Geelong, Barwon Health, Geelong, Australia
- Faculty of Health, Deakin University School of Medicine, Geelong, Australia
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Martin S, O'Connor AD, Selvakumar D, Baraza W, Faulkner G, Mullins D, Kiff ES, Telford KJ, Sharma A. The Long-term Outcomes of Sacral Neuromodulation for Fecal Incontinence: A Single-Center Experience. Dis Colon Rectum 2024; 67:129-137. [PMID: 37738178 DOI: 10.1097/dcr.0000000000002937] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
BACKGROUND Sacral neuromodulation is an effective treatment for fecal incontinence. OBJECTIVE To assess the long-term outcomes of sacral neuromodulation and establish the outcomes of patients with inactive devices. DESIGN This is an observational study of patients treated for >5 years. A positive outcome was defined as a more than 50% reduction in fecal incontinence episodes or improvement in a symptom severity score. Data were reviewed from a prospectively managed database. SETTINGS This study was conducted at a single tertiary referral center. PATIENTS Data from 74 patients (72 women) were available at long-term follow-up. MAIN OUTCOME MEASURES Bowel diary, St. Mark's incontinence score, and Manchester Health Questionnaire data were prospectively recorded at baseline, after percutaneous nerve evaluation, and at last follow-up. RESULTS Patients were analyzed in cohorts based on time since sacral neuromodulation implantation: group 1: 5 to 10 years (n = 20), group 2: >10 years (n = 35), and group 3: inactive sacral neuromodulation devices (n = 19). Median St. Mark's incontinence score and Manchester Health Questionnaire improved from baseline to last follow-up in group 1 ( p ≤ 0.05) and group 2 ( p ≤ 0.05), but in group 3, results returned to baseline levels at the last follow-up. Similarly, weekly fecal incontinence episodes improved in both active device groups at the last follow-up. However, in group 3, incontinence episodes were no different from baseline ( p = 0.722). Despite active devices, fecal urgency episodes increased at the last follow-up after >10 years since percutaneous nerve evaluation ( p ≤ 0.05). Complete continence was reported by 44% of patients, and at least a 50% improvement was seen in 77% of patients with active devices. LIMITATIONS This study is retrospective with some gaps in the available data at the last follow-up. CONCLUSIONS Sacral neuromodulation is an effective treatment for fecal incontinence in the long term, but all outcomes are adversely affected by device inactivity. Therefore, ongoing stimulation is required for continued benefit. See Video Abstract. RESULTADOS A LARGO PLAZO DE LA NEUROMODULACIN SACRA PARA LA INCONTINENCIA FECAL EXPERIENCIA DE UN SOLO CENTRO ANTECEDENTES:La neuromodulación sacra es un tratamiento eficaz para la incontinencia fecal.OBJETIVO:Este estudio tuvo como objetivo evaluar los resultados a largo plazo de la neuromodulación sacra y establecer los resultados de los pacientes con dispositivos inactivos.DISEÑO:Este es un estudio observacional de pacientes tratados durante más de 5 años. Un resultado positivo se definió como una reducción >50 % en los episodios de incontinencia fecal o una mejoría en la puntuación de gravedad de los síntomas. Los datos se revisaron a partir de una base de datos administrada prospectivamente.ENTERNO CLINICO:Este estudio se realizó en un solo centro de referencia terciario.PACIENTES:Los datos de 74 pacientes (72 mujeres) estaban disponibles en el seguimiento a largo plazo.PRINCIPALES MEDIDAS DE RESULTADO:Diario intestinal, puntuación de incontinencia de St. Mark y datos del Cuestionario de salud de Manchester se registraron prospectivamente al inicio, después de la evaluación de nervio periférico y en el último seguimiento.RESULTADOS:Los pacientes se analizaron en cohortes según el tiempo transcurrido desde la implantación de la neuromodulación sacra: Grupo 1: 5-10 años (n = 20), Grupo 2: >10 años (n = 35) y Grupo 3: dispositivos SNM inactivos (n = 19). La mediana de la puntuación de incontinencia de St. Mark y Questionnaire Cuestionario de salud de Manchester mejoraron desde el inicio hasta el último seguimiento en el Grupo 1 (p = < 0,05) y el Grupo 2 (p = < 0,05), pero en el Grupo 3 los resultados volvieron a los niveles iniciales en el último seguimiento. arriba. De manera similar, los episodios semanales de incontinencia fecal mejoraron en ambos grupos de dispositivos activos en el último seguimiento. Sin embargo, en el Grupo 3 los episodios de incontinencia no fueron diferentes de los basales (p = 0,722). A pesar de los dispositivos activos, los episodios de urgencia fecal aumentaron en el último seguimiento después de más de 10 años desde la evaluación del nervio periférico (p = < 0,05). Continencia completa se reportó en el 44 % de los pacientes, y al menos una mejora del 50 % en el 77 % con dispositivos activos.LIMITACIONES:Este estudio es retrospectivo con algunas vacíos en los datos disponibles en el último seguimiento.CONCLUSIONES:La neuromodulación sacra es un tratamiento eficaz para la incontinencia fecal a largo plazo, pero todos los resultados se ven afectados negativamente por la inactividad del dispositivo. Por lo tanto, se requiere estimulación continua para un beneficio continuo. (Traducción- Dr. Francisco M. Abarca-Rendon ).
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Affiliation(s)
- Sarah Martin
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
| | - Alexander D O'Connor
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
| | - Deepak Selvakumar
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
| | - Wal Baraza
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Gemma Faulkner
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Domini Mullins
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Edward S Kiff
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Karen Jane Telford
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
| | - Abhiram Sharma
- Department of Colorectal Surgery, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
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Goudelocke C, Hill H, Major N, Couvaras A, Long A. A novel sacral neuromodulation protocol is associated with reduction in removal for device infection. Int Urogynecol J 2023; 34:2421-2428. [PMID: 37154899 DOI: 10.1007/s00192-023-05543-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/26/2023] [Indexed: 05/10/2023]
Abstract
INTRODUCTION AND HYPOTHESIS Sacral neuromodulation (SNM) has been established as an effective third-line therapy for non-obstructive urinary retention and urinary urgency-frequency syndrome. Device infection, ranging from 2-10%, is a severe complication usually necessitating device explanation. This study sought to demonstrate an infection protocol founded upon established device implantation risk factors and novel approaches to reduce the incidence of device infection, while maintaining good antibiotic stewardship following best practice statements. METHODS A single-surgeon protocol was enacted from 2013 to 2022. Preoperatively, nasal swabs were cultured from each patient. If positive for methicillin-resistant Staphylococcus aureus or methicillin-sensitive Staphylococcus aureus, preoperative treatment with intranasal mupirocin was employed. Preoperative cefazolin was administered in patients with negative cultures or MSSA-positive. All protocol patients were given chlorhexidine wipes before surgery and prepped with a chlorhexidine scrub followed by alcohol/iodine paint. Post-procedural antibiotics were not given. Pre-protocol patients from 2011 to 2013 served as controls. RESULTS Pre-protocol (n = 87) patients had a significantly higher rate of device infection compared to protocol patients (n = 444) in both the percentage of patients experiencing device infection (4.6% vs 0.9%, p = 0.01) and percentage of procedures associated with device infection (2.9% vs 0.5%, p < 0.05). A successful culture of the nares was achieved in 91.4% of protocol patients, with 11.6% MRSA-positive. Risk ratio for infection of pre-protocol/protocol patients was 0.19 (0.05-0.77) with odds ratio 5.1 (1.3-20.0). CONCLUSIONS Utilization of a novel SNM infection protocol tailored to a patient's preoperative MRSA colonization is associated with a reduction in the overall incidence of explant for device infection while avoiding prolonged postoperative antibiotic regimens. CLINICAL TRIAL REGISTRATION The study was initiated prior to January 18, 2017 and does not meet the definition of an applicable clinical trial (ACT) as defined in section 402 (J) of the US PHS Act.
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Affiliation(s)
- Colin Goudelocke
- Department of Urology, Ochsner Medical Center, 1514 Jefferson Hwy, New Orleans, LA, 70121, USA.
| | - Hayden Hill
- Department of Urology, Ochsner Medical Center, 1514 Jefferson Hwy, New Orleans, LA, 70121, USA
| | - Nicholas Major
- Department of Urology, Ochsner Medical Center, 1514 Jefferson Hwy, New Orleans, LA, 70121, USA
| | - Anastasia Couvaras
- Department of Urology, Ochsner Medical Center, 1514 Jefferson Hwy, New Orleans, LA, 70121, USA
| | - Amy Long
- Department of Urology, Erlanger Health Center, Chattanooga, TN, USA
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Kasiri MM, Mittlboeck M, Dawoud C, Riss S. Technical and functional outcome after sacral neuromodulation using the "H" technique. Wien Klin Wochenschr 2023; 135:399-405. [PMID: 36472709 PMCID: PMC10444636 DOI: 10.1007/s00508-022-02115-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 10/27/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Sacral neuromodulation (SNM) is a widely accepted treatment for pelvic floor disorders, including constipation and fecal incontinence (FI). In 2017, a standardized electrode placement method, the H technique, was introduced to minimize failure rates and improve clinical outcomes. We aimed to investigate the technical feasibility and functional outcome of the procedure. METHODS In this prospective study, we evaluated the first 50 patients who underwent SNM according to the H technique between 2017 and 2020 at a tertiary care hospital. Patient demographic and clinical data were collected, and the impact of various factors on patients' postoperative quality of life (QoL) was assessed after a follow-up of 40 months. Functional outcome was monitored prospectively using a standardized questionnaire. RESULTS Of 50 patients, 36 (72%) reported greater than 50% symptom relief and received a permanent implant (95% CI: 58.3-82.5). We observed 75% success in relieving FI (95% CI: 58.9-86.3) and 64% in constipation (95% CI: 38.8-83.7). Complication occurred in five (10%) patients. Preoperative vs. postoperative physical and psychological QoL, Vaizey score, and obstructed defecation syndrome (ODS) scores revealed significant improvements (all p < 0.01). Male gender was significantly associated with postoperative complications (p = 0.035). CONCLUSION We provide evidence for the technical feasibility and efficacy of the SNM implantation using the H technique. The medium-term results are promising for patients with FI and constipation. Male patients and those with a BMI > 25 are more prone to perioperative complications.
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Affiliation(s)
- Mohammad Mahdi Kasiri
- Division of General Surgery, Department of Surgery, Medical University of Vienna/AKH, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Martina Mittlboeck
- Section for Clinical Biometrics, Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Christopher Dawoud
- Division of General Surgery, Department of Surgery, Medical University of Vienna/AKH, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Stefan Riss
- Division of General Surgery, Department of Surgery, Medical University of Vienna/AKH, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Long-term results of sacral neuromodulation for the treatment of anorectal diseases. J Visc Surg 2021; 159:463-470. [PMID: 34736877 DOI: 10.1016/j.jviscsurg.2021.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Sacral neuromodulation (SNM) aims to improve anorectal function in patients with disorders of anal continence and rectal emptying. The mechanism of action of SNM is not well known, and its indications are still under evaluation. We report the functional results and morbidity of a prospective cohort treated between 2002 and 2019. RESULTS A total of 284 patients (of 423 tested) had implantation of a SNM. Five patients (1.8%) were lost to follow-up. Among those who had implantation, the indications for SNM were anal incontinence (n=376), refractory constipation (n=17), anterior resection syndrome (n=13), solitary rectal ulcer syndrome (n=7), and chronic inflammatory bowel disease (IBD) (n=10). The morbidity rate was 2.7% (Dindo-Clavien>2), 33 patients (11%) required explantation for infection (n=5), pain (n=2), inefficacy (n=24) or other reasons (rectal cancer) (n=3). It was necessary to change the stimulator in 68 patients (24%) during the follow-up period. Regarding the group of patients with anal incontinence, functional results showed improvement of the incontinence score in 40% and of quality of life in 25% after a mean follow-up of 55months. CONCLUSION SNM constitutes a mini-invasive treatment associated with low morbidity. Its' efficacy in anal incontinence makes it a priority approach. Other indications are still under evaluation; while results are promising, they are highly variable.
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Wang A, Rourke E, Sebesta E, Dmochowski R. Axonics® system for treatment of overactive bladder syndrome and urinary urgency incontinence. Expert Rev Med Devices 2021; 18:727-732. [PMID: 34187274 DOI: 10.1080/17434440.2021.1947794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Introduction: Overactive bladder and urge urinary incontinence affect millions of women and men and results in billions of dollars in health-care expenses. First- and second-line therapy includes behavioral modifications and/or pharmacotherapies however, many patients' symptoms remain or progress on these treatments. There has been concern regarding the detrimental side effects of the most widely prescribed medications for these bladder symptom management.Areas covered: As a result, there has been increased interest in continuous sacral neuromodulation, an FDA approved therapy for refractory urinary urgency and urge urinary incontinence. In this article, we specifically review current research on the efficacy and patient/provider satisfaction and safety profile of the Axonics® System. In addition, we address the current state of sacral neuromodulation and potential future direction and applicability.Expert opinion: The Axonics® system is a safe effective device for the treatment of overactive bladder and urinary urge incontinence. Additionally, it affords patient's the convenience of a rechargeable, compact, MRI safe system. It should be noted that the rechargeable system, while allowing for approximately 15 years of battery and lead life, may have its challenges in terms of charge burden. Furthermore, this system is easily adapted for experienced implanters of sacral neuromodulating devices.
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Affiliation(s)
- Alice Wang
- Department of Urology, Vanderbilt University Medical Center Nashville, Nashville, TN, USA
| | - Elizabeth Rourke
- Department of Urology, Vanderbilt University Medical Center Nashville, Nashville, TN, USA
| | - Elisabeth Sebesta
- Department of Urology, Vanderbilt University Medical Center Nashville, Nashville, TN, USA
| | - Roger Dmochowski
- Department of Urology, Vanderbilt University Medical Center Nashville, Nashville, TN, USA
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Averbeck MA, Moreno-Palacios J, Aparicio A. Is there a role for sacral neuromodulation in patients with neurogenic lower urinary tract dysfunction? Int Braz J Urol 2021; 46:891-901. [PMID: 32758301 PMCID: PMC7527110 DOI: 10.1590/s1677-5538.ibju.2020.99.10] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 05/04/2020] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To review current literature regarding sacral neuromodulation (SNM) for neurogenic lower urinary tract dysfunction (NLUTD) focused on indications, barriers and latest technological developments. MATERIAL AND METHODS A PubMed database search was performed in April 2020, focusing on SNM and various neuro-urological conditions. RESULTS SNM has been increasingly indicated for lower urinary tract dysfunction (LUTD) in neuro-urological patients. Most studies are cases series with several methodological limitations and limited follow-up, lacking standardized definition for SNM clinical success. Most series focused on neurogenic overactive bladder in spinal cord injured (incomplete lesions) and multiple sclerosis patients. Barriers for applying this therapy in neurogenic LUTD were mainly related to magnetic resonance imaging incompatibility, size of the implantable pulse generator (IPG), and battery depletion. Newer technological advances have been made to address these limitations and will be widely available in the near future. CONCLUSIONS SNM seems a promising therapy for neurogenic LUTD in carefully selected patients with incomplete lesions. Further studies are still needed to define which subgroups of neurological patients benefit the most from this minimally invasive technique.
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Affiliation(s)
- Marcio Augusto Averbeck
- Coordenador de Neurourologia, Unidade de Videourodinâmica, Moinhos de Vento Hospital, Porto Alegre, RS, Brasil
| | - Jorge Moreno-Palacios
- Servicio de Urologia, Unidad de Alta Especialidad Centro Médico Nacional Siglo XXI, IMSS, México, MX
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Leo CA, Thomas GP, Bradshaw E, Karki S, Hodgkinson JD, Murphy J, Vaizey CJ. Long-term outcome of sacral nerve stimulation for faecal incontinence. Colorectal Dis 2020; 22:2191-2198. [PMID: 32954658 DOI: 10.1111/codi.15369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/06/2020] [Indexed: 12/11/2022]
Abstract
AIM Sacral nerve stimulation (SNS) is a minimally invasive treatment for faecal incontinence (FI). We report our experience of patients who have undergone SNS for FI with a minimum of 5 years' follow-up. This is a single centre prospective observational study with the aim to assess the long-term function of SNS. METHOD All patients implanted with SNS were identified from our prospective database. The date of implantation, first and last clinic follow-up, surgical complications and St Mark's incontinence scores were abstracted and analysed. RESULTS From 1996 to 2014, 381 patients were considered for SNS. Of these, 256 patients met the study inclusion criteria. Median age at implantation was 52 years (range 18-81). The ratio of women to men was 205:51. Indications were urge FI (25%), passive FI (17.9%) and mixed FI (57%). The median of the incontinence score at baseline was 19/24 and this improved to 7/24 at the 6-month follow-up. Of the total cohort, 235 patients received a medium-term follow-up (median 110 months, range 12-270) with a median continence score of 10/24 which was also confirmed at the telephone long-term follow-up on 185 patients (132 months, range 60-276). CONCLUSION This study demonstrates that SNS is an effective treatment in the long term. SNS results in an improvement of validated scores for approximately 60% of patients; however, there is a significant reduction of efficacy over time due to underlying causes.
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Affiliation(s)
- C A Leo
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Northwest London University NHS Trust, Harrow, UK.,Imperial College London, London, UK.,Northwick Park Hospital, London North West NHS Trust, Harrow, UK
| | - G P Thomas
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Northwest London University NHS Trust, Harrow, UK
| | - E Bradshaw
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Northwest London University NHS Trust, Harrow, UK
| | - S Karki
- Northwick Park Hospital, London North West NHS Trust, Harrow, UK
| | - J D Hodgkinson
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Northwest London University NHS Trust, Harrow, UK.,Imperial College London, London, UK
| | - J Murphy
- Imperial College London, London, UK
| | - C J Vaizey
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Northwest London University NHS Trust, Harrow, UK.,Imperial College London, London, UK
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Karapanos L, Chon SH, Kokx R, Schmautz M, Heidenreich A. A rare case of tined lead migration of InterStim device into the rectum with subsequent novel combined surgical-endoscopic removal technique. Turk J Urol 2020; 46:492-495. [PMID: 33016870 DOI: 10.5152/tud.2020.20320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/17/2020] [Indexed: 11/22/2022]
Abstract
After the introduction of self-anchoring tined leads in 2002, lead migration after sacral neuromodulation (SNM) in the form of InterStimTM (Medtronic, Minneapolis, MN) has been reduced; however, it remains a considerable complication of this otherwise low-risk procedure. As intestinal perforation through lead migration or primary incorrect positioning portrays a rarity and has been scarcely reported in the literature, no algorithm for explantation in such cases has been determined. We present a case of a young man with an SNM device implant (InterStim II®) because of neurogenic urinary retention, who was admitted with inflammation, localized at the sacral lead insertion site. Our diagnostic algorithm revealed a tined lead electrode protruding into the rectum without concomitant abscess. We performed an interdisciplinary surgical approach combining regular incisions over the sacrum and buttocks for dissection of the lead and the implanted pulse generator, respectively, with an endoscopic transanal lead extraction. This method prevented further bacterial seeding in the surrounding tissues of the colon and, therefore, presacral abscess formation or sacral osteomyelitis. Combined surgical-endoscopic removal of the InterStim device is an effective and safe procedure that should be included in the armamentarium of urologists performing neuromodulation surgery in cases of intestinal perforation.
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Affiliation(s)
- Leonidas Karapanos
- Department of Urology, Uro-Oncology, Robot Assisted and Reconstructive Surgery, University of Cologne, Faculty of medicine, University Hospital Cologne, Cologne, Germany
| | - Seung-Hun Chon
- Department of General, Visceral, Cancer and Transplant Surgery, University of Cologne, Faculty of medicine, University Hospital Cologne, Cologne, Germany
| | - Ruud Kokx
- Department of Urology, Uro-Oncology, Robot Assisted and Reconstructive Surgery, University of Cologne, Faculty of medicine, University Hospital Cologne, Cologne, Germany
| | - Maximilian Schmautz
- Department of Urology, Uro-Oncology, Robot Assisted and Reconstructive Surgery, University of Cologne, Faculty of medicine, University Hospital Cologne, Cologne, Germany
| | - Axel Heidenreich
- Department of Urology, Uro-Oncology, Robot Assisted and Reconstructive Surgery, University of Cologne, Faculty of medicine, University Hospital Cologne, Cologne, Germany
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Needs, priorities, and attitudes of individuals with spinal cord injury toward nerve stimulation devices for bladder and bowel function: a survey. Spinal Cord 2020; 58:1216-1226. [PMID: 32895475 PMCID: PMC7642195 DOI: 10.1038/s41393-020-00545-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 01/28/2023]
Abstract
Study Design: Survey. Objectives: To investigate the needs and priorities of people with spinal cord injury for managing neurogenic bladder and bowel function and to determine their willingness to adopt neuromodulation interventions for these functions. Methods: Anonymous online survey. It was advertised by word-of-mouth by community influencers and social media, and by advertisement in newsletters of advocacy groups. Results: Responses from 370 individuals (27% female, 73% male) were included. Bladder emptying without catheters was the top priority for restoring bladder function, and maintaining fecal continence was the top priority for restoring bowel function. The biggest concerns regarding external stimulation systems were wearing a device with wires connecting to electrodes on the skin and having to don and doff the system daily as needed. The biggest concerns for implanted systems were the chances of experiencing problems with the implant that required a revision surgery or surgical removal of the whole system. Respondents were willing to accept an external (61%) or implanted (41%) device to achieve improved bladder or bowel function. Conclusions: Bladder and bowel dysfunction remain important unmet challenges for individuals living with SCI who answered our survey. These individuals are willing to accept some potential risks of nerve stimulation approaches given potential benefits. Additional consumer input is critical for guiding both research and translation to clinical use and personalized medicine.
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De Meyere C, Nuytens F, Parmentier I, D'Hondt M. Five-year single center experience of sacral neuromodulation for isolated fecal incontinence or fecal incontinence combined with low anterior resection syndrome. Tech Coloproctol 2020; 24:947-958. [PMID: 32556866 DOI: 10.1007/s10151-020-02245-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 05/15/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Sacral neuromodulation (SNM) has proven to be a safe and effective treatment for fecal incontinence (FI). For low anterior resection syndrome (LARS), however, SNM efficacy is still poorly documented. The primary aim of this study was to report on efficacy of SNM therapy for patients with isolated FI or LARS. Furthermore, we evaluated the safety of the procedure and the relevance of adequate follow-up. METHODS A retrospective analysis was performed upon a prospectively maintained database of all patients who underwent SNM therapy for isolated FI or LARS between January 2014 and January 2019. The Wexner and LARS scores were evaluated at baseline, during test phase, after definitive implantation and annually during follow-up. Treatment success was defined as at least 50% improvement of the Wexner score or a reduction to minor or no LARS. RESULTS Out of 89 patients with isolated FI or LARS who had a SNM test phase, 62 patients were eligible for implantation of the permanent SNM device. At baseline, 3 weeks, and 1, 2, 3, 4 and 5 years after definitive implantation the median Wexner score of all patients was 18, 2, 4.5, 5, 5, 4 and 4.5, respectively, and 18, 4, 5.5, 5, 4, 3 and 4, respectively, for patients with FI and LARS. Patients with LARS more frequently required changes in program settings. CONCLUSIONS SNM therapy is a safe and effective treatment for patients with isolated FI and patients with FI and LARS. Adequate follow-up is essential to ensure long-term effectivity, especially for LARS patients.
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Affiliation(s)
- C De Meyere
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital, President Kennedylaan 4, 8500, Kortrijk, Belgium
| | - F Nuytens
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital, President Kennedylaan 4, 8500, Kortrijk, Belgium
| | - I Parmentier
- Department of Oncology and Statistics, Groeninge Hospital, Kortrijk, Belgium
| | - M D'Hondt
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital, President Kennedylaan 4, 8500, Kortrijk, Belgium.
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12
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Varghese C, Wells CI, O'Grady G, Bissett IP. Costs and outcomes of sacral nerve stimulation for faecal incontinence in New Zealand: a 10‐year observational study. ANZ J Surg 2020; 90:569-575. [DOI: 10.1111/ans.15656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/13/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Chris Varghese
- Department of Surgery, Faculty of Medical and Health SciencesThe University of Auckland Auckland New Zealand
| | - Cameron I. Wells
- Department of Surgery, Faculty of Medical and Health SciencesThe University of Auckland Auckland New Zealand
- Department of SurgeryAuckland District Health Board Auckland New Zealand
| | - Gregory O'Grady
- Department of Surgery, Faculty of Medical and Health SciencesThe University of Auckland Auckland New Zealand
- Department of SurgeryAuckland District Health Board Auckland New Zealand
- Auckland Bioengineering InstituteThe University of Auckland Auckland New Zealand
| | - Ian P. Bissett
- Department of Surgery, Faculty of Medical and Health SciencesThe University of Auckland Auckland New Zealand
- Department of SurgeryAuckland District Health Board Auckland New Zealand
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Brochard C, Mege D, Bridoux V, Meurette G, Damon H, Lambrescak E, Faucheron JL, Trilling B, Lehur PA, Wyart V, Sielezneff I, Mion F, Etienney I, Leroi AM, Siproudhis L. Is Sacral Nerve Modulation a Good Option for Fecal Incontinence in Men? Neuromodulation 2019; 22:745-750. [PMID: 31318471 DOI: 10.1111/ner.13017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/09/2019] [Accepted: 05/15/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The objective was to assess the efficacy and the safety of sacral nerve modulation (SNM) in men with fecal incontinence (FI) compared with those of SNM in women. METHOD Prospectively collected data from patients from seven tertiary colorectal units who underwent an implant procedure between January 2010 and December 2015 were reviewed retrospectively. Outcomes and surgical revision and definitive explantation rates were compared between men and women. RESULTS A total of 469 patients (60 men [12.8%]; mean age = 61.4 ± 12.0 years) were included in the study, 352 (78.1%) (31 men [8.8%]) of whom received a permanent implant. The ratio of implanted/tested men was significantly lower than the ratio of implanted/tested women (p = 0.0004). After a mean follow-up of 3.4 ± 1.9 years, the cumulative successful treatment rates tended to be less favorable in men than in women (p = 0.0514): 88.6% (75.6-95.1), 75.9% (60.9-86.4), 63.9% (48.0-77.3), and 43.9% (26.7-62.7) at one, two, three, and five years, respectively, in men; 92.0% (89.1-94.2), 84.2% (80.3-87.4), 76.8% (72.3-80.7), and 63.6% (57.5-69.3) at one, two, three, and five years, respectively, in women. The revision rate for infection and the definitive explantation rate for infection were higher in men than in women (p = 0.0001 and p = 0.0024, respectively). CONCLUSION Both short- and long-term success rates of SNM for FI were lower in men than in women. The revision and definitive explantation for long-term infection rates were significantly higher in men.
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Affiliation(s)
- Charlène Brochard
- Department of Digestive Physiology and Department of Gastroenterology, University Hospital of Rennes Pontchaillou, CIC1414, INPHY, INSERM U1241, University of Rennes 1, Rennes, France
| | - Diane Mege
- Department of Digestive Surgery, Assistance Publique Hôpitaux de Marseille, Timone University Hospital, Marseille, France
| | - Valérie Bridoux
- Normandie Univ, UNIROUEN, Inserm U1073, Rouen University Hospital, Department of Digestive Surgery, Rouen, France
| | - Guillaume Meurette
- Clinique de Chirurgie Digestive et Endocrinienne, Institut des Maladies de l'Appareil Digestif, University Hospital of Nantes, Nantes, France
| | - Henri Damon
- Université de Lyon, Hospices Civils de Lyon, Digestive Physiology, Hospital E Herriot, Lyon, France
| | - Elsa Lambrescak
- Department of Coloproctology, Groupe Hospitalier Diaconesses Croix Saint-Simon, Paris, France
| | - Jean-Luc Faucheron
- Department of Surgery, Colorectal Unit, Michallon University Hospital, Grenoble, France.,University Grenoble Alps UMR 5525, CNRS, TIMC-IMAG, Grenoble, France
| | - Bertrand Trilling
- Department of Surgery, Colorectal Unit, Michallon University Hospital, Grenoble, France.,University Grenoble Alps UMR 5525, CNRS, TIMC-IMAG, Grenoble, France
| | - Paul-Antoine Lehur
- Clinique de Chirurgie Digestive et Endocrinienne, Institut des Maladies de l'Appareil Digestif, University Hospital of Nantes, Nantes, France.,Department of General Surgery, Ospedale Civico di Lugano, Lugano, Switzerland
| | - Vincent Wyart
- Clinique de Chirurgie Digestive et Endocrinienne, Institut des Maladies de l'Appareil Digestif, University Hospital of Nantes, Nantes, France
| | - Igor Sielezneff
- Department of Digestive Surgery, Assistance Publique Hôpitaux de Marseille, Timone University Hospital, Marseille, France
| | - François Mion
- Université de Lyon, Hospices Civils de Lyon, Digestive Physiology, Hospital E Herriot, Lyon, France
| | - Isabelle Etienney
- Department of Coloproctology, Groupe Hospitalier Diaconesses Croix Saint-Simon, Paris, France
| | - Anne-Marie Leroi
- Normandie Univ, UNIROUEN, Inserm U1073, Rouen University Hospital, Department of Digestive Surgery, Rouen, France
| | - Laurent Siproudhis
- Department of Digestive Physiology and Department of Gastroenterology, University Hospital of Rennes Pontchaillou, CIC1414, INPHY, INSERM U1241, University of Rennes 1, Rennes, France
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Sterman J, Cunqueiro A, Dym RJ, Spektor M, Lipton ML, Revzin MV, Scheinfeld MH. Implantable Electronic Stimulation Devices from Head to Sacrum: Imaging Features and Functions. Radiographics 2019; 39:1056-1074. [DOI: 10.1148/rg.2019180088] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jonathan Sterman
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - Alain Cunqueiro
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - R. Joshua Dym
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - Michael Spektor
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - Michael L. Lipton
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - Margarita V. Revzin
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
| | - Meir H. Scheinfeld
- From the Department of Radiology, Division of Emergency Radiology (J.S., A.C., M.L.L., M.H.S.), Department of Psychiatry and Behavioral Sciences (M.L.L.), and Dominick P. Purpura Department of Neuroscience (M.L.L.), Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St, Bronx, NY 10467; Department of Radiology, Rutgers New Jersey Medical School, Newark, NJ (R.J.D.); and Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Conn (M.S., M.V.R.)
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Sun AJ, Harris CR, Comiter CV, Elliott CS. To stage or not to stage?—A cost minimization analysis of sacral neuromodulation placement strategies. Neurourol Urodyn 2019; 38:1783-1791. [DOI: 10.1002/nau.24075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/12/2019] [Accepted: 05/19/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Andrew J. Sun
- Department of UrologyStanford University School of MedicineStanford California
| | - Catherine R. Harris
- Department of UrologyStanford University School of MedicineStanford California
- Division of UrologySanta Clara Valley Medical CenterSan Jose California
| | - Craig V. Comiter
- Department of UrologyStanford University School of MedicineStanford California
| | - Christopher S. Elliott
- Department of UrologyStanford University School of MedicineStanford California
- Division of UrologySanta Clara Valley Medical CenterSan Jose California
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Broken Sacral Neuromodulation Lead Migration Into the Sigmoid Colon: A Case Report. Female Pelvic Med Reconstr Surg 2019; 24:e49-e50. [PMID: 29979356 DOI: 10.1097/spv.0000000000000601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sacral neuromodulation is an effective treatment of urinary incontinence, fecal incontinence, and idiopathic urinary retention. The procedure is considered low risk with overall low complication rates. This report describes a 40-year-old woman who underwent sacral neuromodulation explant and full-system implant for weaning efficacy of her device. During device removal, the tined lead broke and was left in situ. Four months later, she was diagnosed as having a wound infection at the site of the retained lead. Imaging revealed lead fragment migration into the sigmoid colon. A colocutaneous fistula was noted soon thereafter. The retained lead was removed during a colonoscopy and the fistula healed. A retained lead can result in migration through the peritoneum and into the colon. This can be managed with assistance from colorectal or gastroenterology consultants.
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Abstract
OBJECTIVE Neurologic injury after sacral nerve stimulation (SNS) is rare, but the incidence is unknown. Infection is a potential mechanism for neurologic damage. This report illustrates the presentation, pathophysiology, diagnostic considerations, and treatment of epidural infection causing neurologic deficits after SNS. CASE REPORT We present a case of a woman with severe fecal incontinence due to Crohn's disease who underwent SNS implantation and subsequently developed a wound infection requiring complete device explantation. A few days later, she presented with leg pain and weakness. Urgent evaluation and treatment of epidural infection were performed. She had persistent neurologic deficits 6 months later. CONCLUSIONS Neurologic sequelae from an infection after SNS are a rare event and should be considered in patients with fevers, leg pain, and neurologic deficits.
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Tibial Nerve and Sacral Neuromodulation in the Elderly Patient. CURRENT BLADDER DYSFUNCTION REPORTS 2018. [DOI: 10.1007/s11884-018-0493-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Myer EN, Petrikovets A, Slocum PD, Lee TG, Carter-Brooks CM, Noor N, Carlos DM, Wu E, Van Eck K, Fashokun TB, Yurteri-Kaplan L, Chen CCG. Risk factors for explantation due to infection after sacral neuromodulation: a multicenter retrospective case-control study. Am J Obstet Gynecol 2018; 219:78.e1-78.e9. [PMID: 29630890 DOI: 10.1016/j.ajog.2018.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/23/2018] [Accepted: 04/02/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Sacral neuromodulation is an effective therapy for overactive bladder, urinary retention, and fecal incontinence. Infection after sacral neurostimulation is costly and burdensome. Determining optimal perioperative management strategies to reduce the risk of infection is important to reduce this burden. OBJECTIVE We sought to identify risk factors associated with sacral neurostimulator infection requiring explantation, to estimate the incidence of infection requiring explantation, and identify associated microbial pathogens. STUDY DESIGN This is a multicenter retrospective case-control study of sacral neuromodulation procedures completed from Jan. 1, 2004, through Dec. 31, 2014. We identified all sacral neuromodulation implantable pulse generator implants as well as explants due to infection at 8 participating institutions. Cases were patients who required implantable pulse generator explantation for infection during the review period. Cases were included if age ≥18 years old, follow-up data were available ≥30 days after implantable pulse generator implant, and the implant was performed at the institution performing the explant. Two controls were matched to each case. These controls were the patients who had an implantable pulse generator implanted by the same surgeon immediately preceding and immediately following the identified case who met inclusion criteria. Controls were included if age ≥18 years old, no infection after implantable pulse generator implant, follow-up data were available ≥180 days after implant, and no explant for any reason <180 days from implant. Controls may have had an explant for reasons other than infection at >180 days after implant. Fisher exact test (for categorical variables) and Student t test (for continuous variables) were used to test the strength of the association between infection and patient and surgery characteristics. Significant variables were then considered in a multivariable logistic regression model to determine risk factors independently associated with infection. RESULTS Over a 10-year period at 8 academic institutions, 1930 sacral neuromodulator implants were performed by 17 surgeons. In all, 38 cases requiring device explant for infection and 72 corresponding controls were identified. The incidence of infection requiring explant was 1.97%. Hematoma formation (13% cases, 0% controls; P = .004) and pocket depth of ≥3 cm (21% cases, 0% controls; P = .031) were independently associated with an increased risk of infection requiring explant. On multivariable regression analysis controlling for significant variables, both hematoma formation (P = .006) and pocket depth ≥3 cm (P = .020, odds ratio 3.26; 95% confidence interval, 1.20-8.89) remained significantly associated with infection requiring explant. Of the 38 cases requiring explant, 32 had cultures collected and 24 had positive cultures. All 5 cases with a hematoma had a positive culture (100%). Of the 4 cases with a pocket depth ≥3 cm, 2 had positive cultures, 1 had negative cultures, and 1 had a missing culture result. The most common organism identified was methicillin-resistant Staphylococcus aureus (38%). CONCLUSION Infection after sacral neuromodulation requiring device explant is low. The most common infectious pathogen identified was methicillin-resistant S aureus. Demographic and health characteristics did not predict risk of explant due to infection, however, having a postoperative hematoma or a deep pocket ≥3 cm significantly increased the risk of explant due to infection. These findings highlight the importance of meticulous hemostasis as well as ensuring the pocket depth is <3 cm at the time of device implant.
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20
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Post-Implant Management of Sacral Neuromodulation. CURRENT BLADDER DYSFUNCTION REPORTS 2018. [DOI: 10.1007/s11884-018-0475-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Goldman HB, Lloyd JC, Noblett KL, Carey MP, Castaño Botero JC, Gajewski JB, Lehur PA, Hassouna MM, Matzel KE, Paquette IM, de Wachter S, Ehlert MJ, Chartier-Kastler E, Siegel SW. International Continence Society best practice statement for use of sacral neuromodulation. Neurourol Urodyn 2018; 37:1823-1848. [PMID: 29641846 DOI: 10.1002/nau.23515] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/04/2018] [Indexed: 12/31/2022]
Abstract
AIMS Sacral neuromodulation (SNM) is an accepted therapy for a variety of conditions. However, despite over 20 years of experience, it remains a specialized procedure with a number of subtleties. Here we present the recommendations issued from the International Continence Society (ICS) SNM Consensus Panel. METHODS Under the auspices of the ICS, eight urologists, three colorectal surgeons and two urogynecologists, covering a wide breadth of geographic and specialty interest representation, met in January 2017 to discuss best practices for neuromodulation. Suggestions for statements were submitted in advance and specific topics were assigned to committee members, who prepared and presented supporting data to the group, at which time each topic was discussed in depth. Best practice statements were formulated based on available data. This document was then circulated to multiple external reviewers after which final edits were made and approved by the group. RESULTS The present recommendations, based on the most relevant data available in the literature, as well as expert opinion, address a variety of specific and at times problematic issues associated with SNM. These include the use of SNM for a variety of underlying conditions, need for pre-procedural testing, use of staged versus single-stage procedures, screening for success during the trial phase, ideal anesthesia, device implantation, post-procedural management, trouble-shooting loss of device function, and future directions for research. CONCLUSIONS These guidelines undoubtedly constitute a reference document, which will help urologists, gynecologists, and colorectal surgeons optimize their use of SNM for refractory urinary urgency and frequency, UUI, NOR, and FI.
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Affiliation(s)
- Howard B Goldman
- Glickman Urology and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jessica C Lloyd
- Glickman Urology and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
| | - Karen L Noblett
- Axonics Modulation Technologies and Department of Obstetrics and Gynecology, University of California-Irvine, Irvine, California
| | - Marcus P Carey
- Division of Urogynaecology, Frances Perry House, Parkville, Victoria, Australia
| | | | - Jerzy B Gajewski
- Department of Urology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Paul A Lehur
- Clinique de Chirurgie Digestive et Endocrinienne, Universite de Nantes, Nantes, France
| | - Magdy M Hassouna
- Division of Urology, University of Toronto, Toronto, Ontario, Canada
| | - Klaus E Matzel
- Division of Coloproctology, University of Erlangen, Erlangen, Germany
| | - Ian M Paquette
- Department of Surgery, Division of Colon and Rectal Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Stefan de Wachter
- Department of Urology, University Hospital Antwerpen, University of Antwerpen, Belgium
| | | | - Emmanuel Chartier-Kastler
- Department of Urology, Academic Hospital Pitié-Salpétrière, Medical School Sorbonne Université, Paris, France ECK
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Trends in Surgeon-Level Utilization of Sacral Nerve Stimulator Implantation for Fecal Incontinence in New York State. Dis Colon Rectum 2018; 61:107-114. [PMID: 29215481 DOI: 10.1097/dcr.0000000000000941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND There is a paucity of real-world data regarding surgeon utilization of sacral nerve stimulation for fecal incontinence compared with anal sphincteroplasty. OBJECTIVE This study aims to examine trends in sacral nerve stimulation use compared with sphincteroplasty for fecal incontinence and surgeon-level variation in progression to implantation of the pulse generator. DESIGN This is a population-based study. PATIENTS Patients with fecal incontinence between 2011 and 2014 in New York who underwent stage 1 of the sacral nerve stimulation procedure were selected. For the comparison with sphincteroplasty, patients with fecal incontinence who underwent anal sphincteroplasty between 2008 and 2014 were included. MAIN OUTCOME MEASURES The main outcomes after sacral nerve stimulation generator placement were unplanned 30-day admission, emergency department visit within 30 days, revision or explant of leads or generator, and 30-day mortality. RESULTS Six hundred twenty-one patients with fecal incontinence underwent a stage 1 procedure with 79.7% progressing to stage 2. There has been an increase in the number of sacral nerve stimulation cases per year as well as the number of surgeons performing the procedure. The rate of progression to stage 2 among patients treated by colorectal surgeons was 80.2% compared with 77.0% among those treated by noncolorectal surgeons. Among those who completed stage 2, there were 3 (0.5%) unplanned 30-day admissions, 24 (4.4%) emergency department visits within 30 days, and 0 mortalities within 30 days. Thirty-two (6.5%) patients had their leads or pulse generator revised or explanted. There was a significant decrease in annual sphincteroplasty cases and the number of providers performing the procedure starting in 2011. LIMITATIONS We lacked data regarding patient and physician decision making and the severity of disease. CONCLUSIONS Sacral nerve stimulation for fecal incontinence is increasing in popularity with an increasing number of surgeons utilizing sacral nerve stimulation for fecal incontinence rather than sphincteroplasty. See Video Abstract at http://links.lww.com/DCR/A450.
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Rice TC, Paquette IM. Technical considerations for sacral nerve stimulator insertion. SEMINARS IN COLON AND RECTAL SURGERY 2017. [DOI: 10.1053/j.scrs.2017.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Force L, da Silva G. Management of complications of sacral neuromodulation. SEMINARS IN COLON AND RECTAL SURGERY 2017. [DOI: 10.1053/j.scrs.2017.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Abstract
BACKGROUND Decision-making for pulse generator implantation for sacral nerve stimulation in the management of fecal incontinence is based on the results of a test phase. Its duration is still a matter of debate. OBJECTIVE The purpose of this study was to determine whether an early positive response during the test phase could predict implantation of a permanent sacral nerve pulse generator. DESIGN This was a short-term observational cohort study. A positive response was defined as a >50% decrease of fecal leaks compared with baseline. A multivariate logistic regression was computed to predict pulse generator implantation after the first week of the test phase. SETTINGS The study was conducted in 3 national referral centers. PATIENTS From January 2006 to December 2012, 144 patients with fecal incontinence enrolled in a prospectively maintained database completed a 2- to 3-week bowel diary, at baseline and during test phase. MAIN OUTCOME MEASURES The primary outcome was the clinical decision to implant a pulse generator. The primary predictor was a calculated score including the number of leak episodes, bowel movements, and urgencies and the time to defer defecation expressed in minutes during the first screening test week. RESULTS After the first, second and third week of the test phase, 81 (56%) of 144, 96 (67%) of 144, and 93 (70%) of 131 patients had a positive test. A permanent pulse generator was implanted in 114. Time to defer defecation increased during the 3 weeks of screening. Urgencies were unchanged. The computed score was predictive of a permanent pulse generator implantation (Se = 72.6% (95% CI, 59.8-83.1); Sp = 100% (95% CI, 78.2-100); c-index = 0.86 (95% CI, 0.78-0.94)). LIMITATIONS No cost analysis or projection based on our proposal to reduce the test phase has been made. CONCLUSIONS Permanent pulse generator implantation can be safely proposed early (1-week screening) to fast responders. Nonetheless, permanent implantation may be decided as well in patients exhibiting a delayed response. Whether a rapid response to sacral nerve stimulation could be predictive of a long-term response remains to be determined. See Video Abstract at http://links.lww.com/DCR/A452.
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Garrett KA. Managing expectations of the patient following sacral neuromodulation. SEMINARS IN COLON AND RECTAL SURGERY 2017. [DOI: 10.1053/j.scrs.2017.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee C, Pizarro-Berdichevsky J, Clifton MM, Vasavada SP. Sacral Neuromodulation Implant Infection: Risk Factors and Prevention. Curr Urol Rep 2017; 18:16. [PMID: 28224396 DOI: 10.1007/s11934-017-0663-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Device infection is one of the most common complications of sacral nerve stimulator placement and occurs in approximately 3-10% of cases. Infection is a serious complication, as it often requires complete explantation of the device. Not much is known regarding risk factors for and methods of preventing infection in sacral nerve stimulation. Multiple risk factors have been linked to device infection including prolonged percutaneous testing and choice of preoperative antibiotic. Methods of infection prevention have also been studied recently, including antibiotic-impregnated collage and type of skin preparation. This review will discuss the recent literature identifying risk factors and means of preventing infection in sacral nerve stimulation. Finally, we will outline a protocol we have enacted at our institution which has resulted in an incidence of infection of 1.6%.
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Affiliation(s)
- Calvin Lee
- Cleveland Clinic Lerner College of Medicine, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Javier Pizarro-Berdichevsky
- Department of Urology, Cleveland Clinic Foundation, Q10-1, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
- Urogynecology Unit, Hospital Dr. Sotero del Rio, Santiago, Chile
- Division de Obstetricia y Ginecologia, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Marisa M Clifton
- Department of Urology, Cleveland Clinic Foundation, Q10-1, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Sandip P Vasavada
- Cleveland Clinic Lerner College of Medicine, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
- Department of Urology, Cleveland Clinic Foundation, Q10-1, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
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Rodrigues FG, Chadi SA, Cracco AJ, Sands DR, Zutshi M, Gurland B, Da Silva G, Wexner SD. Faecal incontinence in patients with a sphincter defect: comparison of sphincteroplasty and sacral nerve stimulation. Colorectal Dis 2017; 19:456-461. [PMID: 27620162 DOI: 10.1111/codi.13510] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/18/2016] [Indexed: 12/15/2022]
Abstract
AIM Sphincteroplasty (SP) is used to treat faecal incontinence (FI) in patients with a sphincter defect. Although sacral nerve stimulation (SNS) is used in patients, its outcome in patients with a sphincter defect has not been definitively evaluated. We compared the results of SP and SNS for FI associated with a sphincter defect. METHOD Patients treated by SNS or SP for FI with an associated sphincter defect were retrospectively identified from an Institutional Review Board approved prospective database. Patients with ultrasound evidence of a sphincter defect were matched by age, gender and body mass index. The main outcome measure was change in the Cleveland Clinic Florida Faecal Incontinence Score (CCF-FIS). RESULTS Twenty-six female patients with a sphincter defect were included in the study. The 13 patients in each group were similar for age, body mass index, initial CCF-FIS and the duration of follow-up. No differences were observed in parity (P = 1.00), the rate of concomitant urinary incontinence (P = 0.62) or early postoperative complications. Within-group analysis showed a significant reduction of the CCF-FIS among patients having SNS (15.9-8.4; P = 0.003) but not SP (16.9-12.9; P = 0.078). There was a trend towards a more significant improvement in CCF-FIS in the SNS than in the SP group (post-treatment CCF-FIS 8.4 vs 12.9, P = 0.06). Net improvement in CCF-FIS was not significantly different between the groups (P = 0.06). CONCLUSION Significant improvement in CCF-FIS was observed in patients treated with SNS but not SP patients. A trend towards better results was seen with SNS.
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Affiliation(s)
- F G Rodrigues
- Cleveland Clinic Florida, Weston, Florida, USA.,National Council for Scientific and Technological Development (CNPq), Brasilia, Brazil
| | - S A Chadi
- Cleveland Clinic Florida, Weston, Florida, USA
| | - A J Cracco
- Cleveland Clinic Florida, Weston, Florida, USA
| | - D R Sands
- Cleveland Clinic Florida, Weston, Florida, USA
| | - M Zutshi
- Cleveland Clinic, Cleveland, Ohio, USA
| | - B Gurland
- Cleveland Clinic, Cleveland, Ohio, USA
| | - G Da Silva
- Cleveland Clinic Florida, Weston, Florida, USA
| | - S D Wexner
- Cleveland Clinic Florida, Weston, Florida, USA
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Management of device-related complications after sacral neuromodulation for lower urinary tract disorders in women: a single center experience. Arch Gynecol Obstet 2017; 295:951-957. [DOI: 10.1007/s00404-017-4303-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 01/17/2017] [Indexed: 10/20/2022]
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Gumber A, Ayyar S, Varia H, Pettit S. Presacral abscess as a rare complication of sacral nerve stimulator implantation. Ann R Coll Surg Engl 2017; 99:e1-e4. [PMID: 28071947 DOI: 10.1308/rcsann.2017.0013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 50-year-old man with intractable anal pain attributed to proctalgia fugax underwent insertion of a sacral nerve stimulator via the right S3 vertebral foramen for pain control with good symptomatic relief. Thirteen months later, he presented with signs of sepsis. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a large presacral abscess. MRI demonstrated increased enhancement along the pathway of the stimulator electrode, indicating that the abscess was caused by infection introduced at the time of sacral nerve stimulator placement. The patient was treated with broad spectrum antibiotics, and the sacral nerve stimulator and electrode were removed. Attempts were made to drain the abscess transrectally using minimally invasive techniques but these were unsuccessful and CT guided transperineal drainage was then performed. Despite this, the presacral abscess progressed, developing enlarging gas locules and extending to the pelvic brim to involve the aortic bifurcation, causing hydronephrosis and radiological signs of impending sacral osteomyelitis. MRI showed communication between the rectum and abscess resulting from transrectal drainage. In view of the progressive presacral sepsis, a laparotomy was performed with drainage of the abscess, closure of the upper rectum and formation of a defunctioning end sigmoid colostomy. Following this, the presacral infection resolved. Presacral abscess formation secondary to an infected sacral nerve stimulator electrode has not been reported previously. Our experience suggests that in a similar situation, the optimal management is to perform laparotomy with drainage of the presacral abscess together with simultaneous removal of the sacral nerve stimulator and electrode.
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Affiliation(s)
- A Gumber
- Blackpool Teaching Hospitals NHS Foundation Trust , UK
| | - S Ayyar
- Blackpool Teaching Hospitals NHS Foundation Trust , UK
| | - H Varia
- Blackpool Teaching Hospitals NHS Foundation Trust , UK
| | - S Pettit
- Blackpool Teaching Hospitals NHS Foundation Trust , UK
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Dynamic Article: Percutaneous Nerve Evaluation Versus Staged Sacral Nerve Stimulation for Fecal Incontinence. Dis Colon Rectum 2016; 59:962-7. [PMID: 27602927 DOI: 10.1097/dcr.0000000000000668] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Sacral neuromodulation using a 2-staged approach is an established therapy for fecal incontinence. Office-based percutaneous nerve evaluation is a less-invasive alternative to the stage 1 procedure but is seldom used in the evaluation of patients with fecal incontinence. OBJECTIVE The aim of this study was to determine the clinical success of percutaneous nerve evaluation versus a staged approach. DESIGN This was a retrospective review of a prospectively maintained, single-institution database of patients treated with sacral neuromodulation for fecal incontinence. SETTINGS This study was conducted at a single academic medical center. PATIENTS Eighty-six consecutive patients were treated with sacral neuromodulation for fecal incontinence. INTERVENTIONS Percutaneous nerve evaluation was compared with a staged approach. MAIN OUTCOME MEASURES The primary outcome measured was the proportion of patients progressing to complete implantation based on >50% improvement in Wexner score during the testing phase. RESULTS Percutaneous nerve evaluation was performed in 45 patients, whereas 41 underwent a staged approach. The mean baseline Wexner score did not differ between testing groups. Success was similar between the staged approach and percutaneous nerve evaluation (90.2% versus 82.2%; p = 0.36). The mean 3-month Wexner score was not significantly different between testing methods (4.4 versus 4.1; p = 0.74). However, infection was more likely to occur after the staged approach (10.5% versus 0.0%; p < 0.05). LIMITATIONS This study was limited by its retrospective nature and potential for selection bias. CONCLUSIONS Percutaneous nerve evaluation offers a viable alternative to a staged approach in the evaluation of patients for sacral neuromodulation in the setting of fecal incontinence. Not only are success rates similar, but percutaneous nerve evaluation also has the benefit of limiting patients to 1 operating room visit and has lower rates of infection as compared with the traditional staged approach for sacral neuromodulation.
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Abstract
Fecal incontinence is a devastating condition, vastly under-reported, and may affect up to 18% of the population. While conservative management may be efficacious in a large portion of patients, those who are refractory will likely benefit from appropriate surgical intervention. There are a wide variety of surgical approaches to fecal incontinence management, and knowledge and experience are crucial to choosing the appropriate procedure and maximizing functional outcome while minimizing risk. In this article, we provide a comprehensive description of surgical options for fecal incontinence to help the clinician identify an appropriate intervention.
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Affiliation(s)
- Steven D Wexner
- a 1 Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL 33331, USA
| | - Joshua Bleier
- b 2 University of Pennsylvania Health System, Department of Surgery, 800 Walnut St. 20th Floor, Philadelphia, PA 19106, USA
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Abstract
Fecal incontinence affects patients of all sexes, races, and ethnicities; however, those affected often are afraid or too embarrassed to ask for help. Attention to risk factors and directed physical examinations can help healthcare providers diagnose and formulate treatment plans. Numerous diagnostic tests are available. Diligent follow-up is needed to direct patients to second-line therapies such as sacral nerve stimulation or surgical procedures.
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Abstract
Fecal incontinence (FI) is a chronic and debilitating condition that carries a significant health, economic, and social burden. FI has a considerable psychosocial and financial impact on patients and their families. A variety of treatment modalities are available for FI including behavioral and dietary modifications, pharmacotherapy, pelvic floor physical therapy, bulking agents, anal sphincteroplasty, sacral nerve stimulation, artificial sphincters, magnetic sphincters, posterior anal sling, and colostomy.
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Affiliation(s)
- Katarzyna Bochenska
- Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Anne-Marie Boller
- Division of Gastrointestinal Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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Patton V, Abraham E, Lubowski DZ. Sacral nerve stimulation for faecal incontinence: medium-term follow-up from a single institution. ANZ J Surg 2016; 87:462-466. [PMID: 27193192 DOI: 10.1111/ans.13605] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/24/2016] [Accepted: 02/25/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Most studies on sacral nerve stimulation (SNS) are either single-centre with small numbers of patients or multi-centre studies. We present the medium-term follow-up results from a single centre for 127 patients undergoing SNS. METHODS Consecutive patients treated with SNS for faecal incontinence had preoperative baseline St Mark's continence scores, faecal incontinence quality of life (FIQL) measures and anorectal physiology studies. Follow-up was a postal questionnaire concerning continence, FIQL, patient-perceived change in bowel control (-5 to +5 where 0 is no change), overall satisfaction (0-10 visual analogue scale) and use of medications. RESULTS A total of 166 patients underwent temporary nerve stimulation testing, of which 112 progressed to a permanent implantable pulse generator (IPG). Fifteen received an IPG without the testing phase, hence 127 patients in total. Fourteen had the IPG removed, four were deceased, leaving 109 for assessment; 91 (83%) responded to the survey. Mean follow-up was 2.7 years (range: 2 months-8.5 years). Mean baseline St Mark's continence score was 14.4, and mean follow-up score was 10.3 (P < 0.01). FIQL improved in all domains (P < 0.001). Patient-reported improved bowel control mean score was +3.2 (95% CI: 2.9, 3.55). Median satisfaction score was 8.0 (range: 0-10). Complications included 17 lead dislodgements, seven superficial infections, five infections requiring surgery and five repositioning of a rotated IPG. Thirty-two patients used loperamide and 34 used fibre supplements. CONCLUSION In this observational study, limited by the absence of a placebo control group, SNS significantly improved continence and quality of life, and patient satisfaction was high.
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Affiliation(s)
- Vicki Patton
- Department of Colorectal Surgery, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - Earl Abraham
- Department of Colorectal Surgery, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - David Z Lubowski
- Department of Colorectal Surgery, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
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Abstract
AIM The aim of this study is to determine the occurrence of surgical revision in a cohort of patients treated with sacral nerve stimulation (SNS) for faecal incontinence and constipation and to establish the types of procedures performed and indications for surgery. METHOD From the years 2002 to 2014, 125 patients were identified who had undergone permanent SNS therapy with 36 (28.8 %) patients requiring surgical intervention postimplantation. These cases were retrospectively reviewed (range of follow-up 1-99 months). RESULTS Over a total of 1512 months of SNS treatment, 51 unplanned surgical procedures were required in 36 patients. At present, 48 procedures have been performed at an average of 2.6 years following implantation and three patients are awaiting surgery. Lead-related problems accounted for 30 (58.8 %) procedures at an average of 1.7 years affecting 22 patients. Battery and implantable pulse generator-related problems attributed to 13 procedures (25.5 %) in 12 patients at an average of 5.0 years. Battery depletion occurred in seven patients at an average of 5.4 years. Surgical revision was required to replace, remove, or resite various components of the SNS system. Indications for surgery included lead damage, pain and loss or lack of SNS efficacy. Explantation was warranted in six patients due to poor SNS efficacy, pain, infection and facilitation of a magnetic resonance imaging scan. This was performed at an average of 1.6 years. CONCLUSION A considerable proportion of patients treated with SNS therapy require surgical revision. These unplanned procedures are associated with substantial unexpected costs that financially burden SNS services.
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Bielefeldt K. Adverse events of gastric electrical stimulators recorded in the Manufacturer and User Device Experience (MAUDE) Registry. Auton Neurosci 2016; 202:40-44. [PMID: 26850819 DOI: 10.1016/j.autneu.2016.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/18/2016] [Accepted: 01/25/2016] [Indexed: 12/12/2022]
Abstract
The role of gastric electrical stimulation for patients with refractory symptoms of gastroparesis remains controversial. Open label studies suggest benefit while randomized controlled trials did not demonstrate differences between active and sham intervention. Using a voluntary reporting system of the Federal Drug Administration, we examined the type and frequency of adverse events. METHODS We conducted an electronic search of the Manufacturer and User Device Experience (MAUDE) databank using the keyword 'Enterra' for the time between January of 2001 and October of 2015. We abstracted information about the year of stimulator implantation, the year and type of adverse effect, the resulting intervention and outcome if available. RESULTS A total of 1587 entries described adverse effects related the GES. Only 36 of the reports listed perioperative complications. The vast majority described problems that could be classified as patient concerns, local complications, or system failure. The most common problem related lack or loss of efficacy, followed by pain or complications affecting the pocket site. A subset of 801 reports provided information about the time between system implant and registration of concerns, which gradually declined over time. More than one third (35.7%) of the reported adverse events prompted surgical correction. CONCLUSION The number of voluntarily reported adverse events and the high likelihood of repeated surgical interventions clearly demonstrate the potential downside of gastric electrical stimulation. Physicians considering this intervention will need to carefully weigh these risks and include this information when counseling or consenting patients.
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Affiliation(s)
- Klaus Bielefeldt
- University of Pittsburgh Medical Center, Division of Gastroenterology, 200 Lothrop St., Pittsburgh, PA 15213, United States.
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Abstract
BACKGROUND Adverse events and complications have been reported after sacral neurostimulation for fecal incontinence, which may result in surgical revision and device explantation. Lead reimplantation may be feasible; however, available data regarding outcomes are less robust. OBJECTIVE The aim of this study was to determine the outcomes of sacral neurostimulation lead reimplantation for fecal incontinence. DESIGN This was a retrospective review of prospectively collected data. SETTINGS The study was conducted at 2 clinical sites from a single institution. PATIENTS Patients with fecal incontinence who underwent sacral neurostimulation implantation or reimplantation between 2011 and 2014 were included in the study. INTERVENTIONS Sacral neurostimulation reimplantation was the included intervention. MAIN OUTCOME MEASURES Change in the Cleveland Clinic Florida Fecal Incontinence Score (0 best; 20 worst) in reimplantation as compared with index implantation controls was the main measure. Secondary outcomes included the frequency and type of adverse events and complications. RESULTS A total of 112 patients underwent either sacral neurostimulation implantation or reimplantation between 2011 and 2014. Ninety-seven patients underwent an index percutaneous nerve stimulation trial, 93 of whom also underwent a stimulator implantation. Fifteen patients underwent lead reimplantation, with 5 performed before stimulator implantation and 10 after stimulator implantation. The index implanted and reimplanted groups had similar demographics, comorbidities, and complication profiles including explantation rates. The most common reason for reimplantation was lead related (6/15), including 4 lead migrations, 1 lead fracture, and 1 lead erosion. Significant decreases in the incontinence score were achieved in each group (index implantation: p < 0.001; reimplantation: p = 0.006). When comparing the efficacy of sacral neurostimulation therapy in decreasing the fecal incontinence score from baseline in each group, patients with an index implantation were found to have a more significant improvement in their incontinence score as compared with the reimplantation group (p = 0.047). LIMITATIONS This was a retrospective study. A large number of patients with incomplete functional assessment data were excluded from analysis. CONCLUSIONS The improvements in fecal incontinence are significantly better after index implantation than after reimplantation.
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Montroni I, Wexner SD. Reoperative surgery for fecal incontinence. SEMINARS IN COLON AND RECTAL SURGERY 2015. [DOI: 10.1053/j.scrs.2015.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Maeda Y, O'Connell PR, Lehur PA, Matzel KE, Laurberg S. Sacral nerve stimulation for faecal incontinence and constipation: a European consensus statement. Colorectal Dis 2015; 17:O74-87. [PMID: 25603960 DOI: 10.1111/codi.12905] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 10/29/2014] [Indexed: 12/14/2022]
Abstract
AIM In Europe during the last decade sacral nerve stimulation (SNS) or sacral neuromodulation (SNM) has been used to treat faecal incontinence (FI) and constipation. Despite this, there is little consensus on baseline investigations, patient selection and operative technique. A modified Delphi process was conducted to seek consensus on the current practice of SNS/SNM for FI and constipation. METHOD A systematic literature search of SNS for FI and constipation was conducted using PubMed. A set of questions derived from the search and expert opinion were answered on-line on two occasions by an international panel of specialists from Europe. A 1-day face-to-face meeting of the experts finalized the discussion. RESULTS Three hundred and ninety-three articles were identified from the literature search, of which 147 fulfilled the inclusion criteria. Twenty-two specialists in FI and constipation from Europe participated. Agreement was achieved on 43 (86%) of 50 domains including the set-up of service, patient selection, baseline investigations, operative technique and programming of the device. The median of agreement was 95% (35-100%). CONCLUSION Consensus was achieved on the majority of domains of SNS/SNM for FI and constipation. This should serve as a benchmark for safe and quality practice of SNS/SNM in Europe.
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Affiliation(s)
- Y Maeda
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Harrow, UK
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Steele SR, Varma MG, Prichard D, Bharucha AE, Vogler SA, Erdogan A, Rao SSC, Lowry AC, Lange EO, Hall GM, Bleier JIS, Senagore AJ, Maykel J, Chan SY, Paquette IM, Audett MC, Bastawrous A, Umamaheswaran P, Fleshman JW, Caton G, O'Brien BS, Nelson JM, Steiner A, Garely A, Noor N, Desrosiers L, Kelley R, Jacobson NS. The evolution of evaluation and management of urinary or fecal incontinence and pelvic organ prolapse. Curr Probl Surg 2015; 52:17-75. [PMID: 25919203 DOI: 10.1067/j.cpsurg.2015.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/29/2015] [Indexed: 12/13/2022]
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Whitehead WE, Rao SSC, Lowry A, Nagle D, Varma M, Bitar KN, Bharucha AE, Hamilton FA. Treatment of fecal incontinence: state of the science summary for the National Institute of Diabetes and Digestive and Kidney Diseases workshop. Am J Gastroenterol 2015; 110:138-46; quiz 147. [PMID: 25331348 DOI: 10.1038/ajg.2014.303] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 08/05/2014] [Indexed: 12/11/2022]
Abstract
This is the second of a two-part summary of a National Institutes of Health conference on fecal incontinence (FI) that summarizes current treatments and identifies research priorities. Conservative medical management consisting of patient education, fiber supplements or antidiarrheals, behavioral techniques such as scheduled toileting, and pelvic floor exercises restores continence in up to 25% of patients. Biofeedback, often recommended as first-line treatment after conservative management fails, produces satisfaction with treatment in up to 76% and continence in 55%; however, outcomes depend on the skill of the therapist, and some trials are less favorable. Electrical stimulation of the anal mucosa is ineffective, but continuous electrical pulsing of sacral nerves produces a ≥50% reduction in FI frequency in a median 73% of patients. Tibial nerve electrical stimulation with needle electrodes is promising but remains unproven. Sphincteroplasty produces short-term clinical improvement in a median 67%, but 5-year outcomes are poor. Injecting an inert bulking agent around the anal canal led to ≥50% reductions of FI in up to 53% of patients. Colostomy is used as a last resort because of adverse effects on quality of life. Several new devices are under investigation but not yet approved. FI researchers identify the following priorities for future research: (1) trials comparing the effectiveness, safety, and cost of current therapies; (2) studies addressing barriers to consulting for care; and (3) translational research on regenerative medicine. Unmet patient needs include FI in special populations (e.g., neurological disorders and nursing home residents) and improvements in behavioral treatments.
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Affiliation(s)
- William E Whitehead
- 1] Division of Gastroenterology and Hepatology, Department of Medicine, Chapel Hill, North Carolina, USA [2] Division of Urogynecology and Reconstructive Pelvic Floor Surgery, Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Satish S C Rao
- Department of Gastroenterology, Georgia Regents University, Augusta, Georgia, USA
| | - Ann Lowry
- Colon and Rectal Surgery Associates, Ltd., St. Paul, Minnesota, USA
| | - Deborah Nagle
- Department of Colon and Rectal Surgery, Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Madhulika Varma
- Section of Colorectal Surgery, University of California, San Francisco, California, USA
| | - Khalil N Bitar
- Department of Regenerative Medicine, Wake Forest Institute for Regenerative Medicine, Winston Salem, North Carolina, USA
| | - Adil E Bharucha
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Frank A Hamilton
- National Institutes of Diabetes, Digestive and Kidney Diseases, National Institute of Health, Bethesda, Maryland, USA
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Zbar AP. Sacral neuromodulation and peripheral nerve stimulation in patients with anal incontinence: an overview of techniques, complications and troubleshooting. Gastroenterol Rep (Oxf) 2014; 2:112-20. [PMID: 24759349 PMCID: PMC4020133 DOI: 10.1093/gastro/gou015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Sacral neuromodulation (SNM) therapy has revolutionized the management of many forms of anal incontinence, with an expanded use and a medium-term efficacy of 75% overall. This review discusses the technique of SNM therapy, along with its complications and troubleshooting and a discussion of the early data pertaining to peripheral posterior tibial nerve stimulation in incontinent patients. Future work needs to define the predictive factors for neurostimulatory success, along with the likely mechanisms of action of their therapeutic action.
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Affiliation(s)
- Andrew P Zbar
- Department of Surgery and Transplantation, Chaim Sheba Medical Center, Ramat Gan, Israel and Assia Medical Colorectal Group Assuta Private Hospital, Tel Aviv, Israel
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McNevin MS, Moore M, Bax T. Outcomes associated with Interstim therapy for medically refractory fecal incontinence. Am J Surg 2014; 207:735-7; discussion 737-88. [PMID: 24791636 DOI: 10.1016/j.amjsurg.2014.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/03/2014] [Accepted: 01/07/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND Fecal incontinence is a common, socially debilitating disorder. Initial management involves dietary manipulation with bulking agents or antidiarrheal medications and pelvic floor biofeedback. For patients failing these modalities, traditional surgical approaches are morbid and of variable efficacy. Sacral nerve neuromodulation (Interstim, sacral nerve stimulation) was approved in May 2011 for management of medically refractory fecal incontinence. This report summarizes our experience with this treatment modality. METHODS A prospectively maintained database from a colorectal specialty practice was reviewed from December 2011 to June 2013. Patient demographics, incontinence etiology, and medical treatment regimens were reviewed. Outcomes for Interstim placement and surgical morbidity were reviewed. RESULTS A total of 330 patients were evaluated in the clinic for fecal incontinence during the study period. A total of 33 patients (10%) were offered Interstim therapy. The mean age was 63 (39 to 91) years, and 91% (30 of 33) were female. The etiology of the incontinence was obstetric (81%), rectal prolapse (11%), neurogenic (5%), and iatrogenic (3%). The entire group failed either supplemental fiber or antidiarrheal medications and 73% (24 of 33) failed pelvic floor biofeedback. The mean number of bowel accidents/2-week bowel diary before implant was 19 (9 to 52). After phase I implant, 88% (29 of 33) experienced a successful test phase and proceeded to phase II permanent implant. The mean number of bowel accidents/2-week diary postimplant was 3 (0 to 12). A trend toward less severe episodes of incontinence postimplant was observed. There were no complications associated with either the phase I or phase II implant. There were no phase II failures although 1 patient underwent device explant 9 months after phase II implant for chronic pain. CONCLUSIONS Sacral nerve neuromodulation (Interstim, sacral nerve stimulation) is an effective and efficacious tool for management of medically refractory fecal incontinence that offers a less morbid surgical approach to this problem. Interstim should be considered the first-line surgical approach for medically refractory fecal incontinence.
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Affiliation(s)
- M Shane McNevin
- Surgical Specialists of Spokane, 105 W 8th Avenue Suite 7010, Spokane, WA 99208, USA.
| | - Michael Moore
- Surgical Specialists of Spokane, 105 W 8th Avenue Suite 7010, Spokane, WA 99208, USA
| | - Timothy Bax
- Surgical Specialists of Spokane, 105 W 8th Avenue Suite 7010, Spokane, WA 99208, USA
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Ruiz Carmona MD, Martín Arévalo J, Moro Valdezate D, Plá Martí V, Checa Ayet F. Sacral nerve stimulation for the treatment of severe faecal incontinence: results after 10 years experience. Cir Esp 2014; 92:329-35. [PMID: 24594318 DOI: 10.1016/j.ciresp.2013.04.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 04/15/2013] [Accepted: 04/21/2013] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The objective of this study is to report our experience with sacral nerve stimulation for the treatment of severe faecal incontinence after the first 10 years with this technique. MATERIAL AND METHODS Between 2001 and 2011, 49 patients with severe faecal incontinence underwent sacral nerve stimulation. Anorectal manometry, endoanal ultrasound and pudendal nerve latency were performed. Bowel habit diary, severity of faecal incontinence and quality of life scales were evaluated preoperatively and at the end of follow-up. RESULTS Morbidity occurred in a third of patients, mostly minor. Four definitive devices were explanted. With a median follow-up of 37 months, severity of faecal incontinence, urge and incontinence episodes significantly improved at the end of follow-up. Patients' subgroup with major follow-up of 5 years significantly improved the severity of faecal incontinence but not the parameters of the bowel habit diary. Quality of life showed no significant improvement. Descriptive data in patients with sphincter defects did not show worse results than with sphincter integrity. CONCLUSION Sacral nerve stimulation is a safe technique for severe faecal incontinence with good functional medium-term results. In the long term, severity of the faecal incontinence also improves but studies with larger sample are necessary to show if other clinical parameters and the quality of life support this information. Preliminary results in patients with sphincter defects suggest that this technique could be effective in this group but future studies will have to confirm these findings.
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Affiliation(s)
| | - José Martín Arévalo
- Servicio de Cirugía General y Digestiva, Hospital de Sagunto, Valencia, España
| | | | - Vicente Plá Martí
- Servicio de Cirugía General y Digestiva, Hospital de Sagunto, Valencia, España
| | - Félix Checa Ayet
- Servicio de Cirugía General y Digestiva, Hospital de Sagunto, Valencia, España
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Koughnett JAMV, Wexner SD. Current management of fecal incontinence: Choosing amongst treatment options to optimize outcomes. World J Gastroenterol 2013; 19:9216-9230. [PMID: 24409050 PMCID: PMC3882396 DOI: 10.3748/wjg.v19.i48.9216] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/17/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023] Open
Abstract
The severity of fecal incontinence widely varies and can have dramatic devastating impacts on a person’s life. Fecal incontinence is common, though it is often under-reported by patients. In addition to standard treatment options, new treatments have been developed during the past decade to attempt to effectively treat fecal incontinence with minimal morbidity. Non-operative treatments include dietary modifications, medications, and biofeedback therapy. Currently used surgical treatments include repair (sphincteroplasty), stimulation (sacral nerve stimulation or posterior tibial nerve stimulation), replacement (artificial bowel sphincter or muscle transposition) and diversion (stoma formation). Newer augmentation treatments such as radiofrequency energy delivery and injectable materials, are minimally invasive tools that may be good options before proceeding to surgery in some patients with mild fecal incontinence. In general, more invasive surgical treatments are now reserved for moderate to severe fecal incontinence. Functional and quality of life related outcomes, as well as potential complications of the treatment must be considered and the treatment of fecal incontinence must be individualized to the patient. General indications, techniques, and outcomes profiles for the various treatments of fecal incontinence are discussed in detail. Choosing the most effective treatment for the individual patient is essential to achieve optimal outcomes in the treatment of fecal incontinence.
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Barussaud ML, Mantoo S, Wyart V, Meurette G, Lehur PA. The magnetic anal sphincter in faecal incontinence: is initial success sustained over time? Colorectal Dis 2013; 15:1499-503. [PMID: 24103055 DOI: 10.1111/codi.12423] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 06/13/2013] [Indexed: 02/08/2023]
Abstract
AIM In the short term, implantation of a magnetic anal sphincter (MAS) is a safe and effective treatment for faecal incontinence (FI). In this paper we show that the initial results stand the test of time and patient satisfaction remains high in the medium term. METHOD Data on 23 women [median age 64 (35-78) years] implanted with a MAS device between December 2008 and September 2012 were reviewed from a prospective database. Assessment was based on significant improvement of incontinence scores - the Cleveland Clinic Florida Incontinence Severity (CCF-IS) score, Faecal Incontinence Quality of Life (FIQoL) score - and patient satisfaction at 6, 12, 24 and 36 months after surgery. RESULTS The device was removed in two patients owing to complications. Median follow-up was 17.6 months. The median preoperative CCF-IS score was 15.2 and fell to 6.9, 7.7, 7.8 and 5.3 at 6, 12, 24 and 36 months, respectively. The median FIQoL score significantly (P < 0.001) improved from 1.97 preoperatively to 3.19, 3.11, 2.92 and 2.93, respectively, at the same time periods. The concordance of the CCF-IS and FIQoL scores was 91%. Sixteen of the 23 patients were satisfied but only 14 would have recommended the MAS to someone else. Lack of improvement was the main reason for dissatisfaction. CONCLUSION Good initial results tend to remain stable over time and about two-thirds of patients are satisfied after MAS implantation.
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Affiliation(s)
- M-L Barussaud
- Service de Chirurgie Digestive, University Hospital of Poitiers, Poitiers, France
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Thomas GP, Norton C, Nicholls RJ, Vaizey CJ. A pilot study of transcutaneous sacral nerve stimulation for faecal incontinence. Colorectal Dis 2013; 15:1406-9. [PMID: 23910042 DOI: 10.1111/codi.12371] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 04/24/2013] [Indexed: 12/28/2022]
Abstract
AIM Although effective in faecal incontinence (FI), sacral nerve stimulation (SNS) is expensive and requires two procedures. It carries a small risk of infection and electrode migration. Transcutaneous SNS is noninvasive and cheap. Two small studies have reported the results when applied to segments S3 but there is no information on its effectiveness when applied to the whole sacral area. METHOD A pilot study was carried out of self-administered transcutaneous SNS given over a 4-week period for 12 h a day. A 2-week bowel diary was kept for the final 2 weeks and compared with baseline. Patients were assessed using the St Mark's Incontinence Score, a visual analogue scale assessing satisfaction with bowel habit, the Rockwood FI Quality of Life (QOL) score and SF-36 QOL score. RESULTS Of the 10 patients recruited, two achieved complete continence. There was a statistically significant reduction in the median (interquartile range) frequency of incontinent episodes per week from 9.5 (7.5) to 3 (7.38) (P = 0.03), and in the median frequency of defaecation per week from 25.5 (19.5) to 14.5 (14.9) (P = 0.007). There was a statistically significant improvement in the median ability to defer defaecation from 1 (1.25) to 4.5 (4.5) min (P = 0.02). There was also a statistically significant improvement in the St Marks Incontinence Score from 20 (5.25) to 14.5 (8.0) (P = 0.01) and in the bowel habit satisfaction visual analogue scale from 8.5 (20) to 45 (33) (P = 0.008). There was no change in the Rockwood FI QOL or SF-36 QOL scores. No complications were reported. CONCLUSION Transcutaneous SNS appears to be an effective and safe treatment for FI. Larger controlled studies are needed to explore this further.
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Affiliation(s)
- G P Thomas
- The Sir Alan Parks Department of Physiology, St Mark's Hospital and Academic Institute, Harrow, UK
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Lai HH, Grewal S. Bacterial colonization rate of InterStim and infection outcome with staged testing. Urology 2013; 82:1255-60. [PMID: 24139356 DOI: 10.1016/j.urology.2013.08.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 08/12/2013] [Accepted: 08/15/2013] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the bacterial colonization rate of the InterStim connector and lead during staged testing and the infectious outcome. METHODS A total of 38 consecutive patients who were scheduled to undergo staged InterStim surgery were enrolled in the present prospective study. During the second stage procedure, immediately after the connector incision was opened, aerobic and anaerobic cultures were obtained by swabbing the connector pocket, the connector, and the permanent lead itself with sterile swabs. RESULTS Of the 38 patients, 9 (24%) had a positive culture at the connector or lead site after the incision was opened during the second stage procedure. Of the 9 patients who had a colonized connector or lead, 3 (33%) subsequently developed device infection that required explantation. In contrast, only 3% of those who did not have colonization developed an infection afterward (P = .038). Longer percutaneous testing period was associated with a greater colonization rate. Of the 10 patients who underwent >14 days of staged testing, 5 (50%) developed connector and/or lead colonization. However, only 4 of the 28 patients (14%) who underwent ≤ 14 days of testing did so (P = .036, relative risk 3.5, 95% confidence interval 1.2-10.5). CONCLUSION The risk of InterStim colonization is significant using the staged, tined lead testing approach. Testing for >14 days between the 2 stages was associated with greater colonization rates. Patients should be evaluated on an ongoing basis during staged testing, with attempts to perform generator implantation once efficacy has been unequivocally demonstrated to reduce the risk of colonization.
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Affiliation(s)
- H Henry Lai
- Division of Urologic Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO.
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