Pelvic pain is a common prolapse symptom and improvement after ventral mesh rectopexy is more frequent than deterioration or de novo pain.

AIM: The aim of this work was to assess the relationship between pelvic pain and rectal prolapse both before prolapse surgery and in the long term after ventral mesh rectopexy (VMR). METHOD: Patients undergoing VMR between 2004 and 2017 were contacted. Outcomes including the severity of pelvic pain were recorded using a numeric rating scale. RESULTS: Four hundred and seventy eight of the 749 patients (64%) were successfully contacted. Of these, 39% reported pre-existing pelvic pain prior to VMR (group A) and 61% were pain free (group B). The median follow-up time was 8.0 years (interquartile range 5.0-10.0 years). Symptoms of obstructed defaecation were significantly more common (p = 0.002) in group A (91/187, 49%) than in group B (101/291, 35%). In contrast, faecal incontinence was more common (p = 0.007) in group B (75/291, 26%) than in group A (29/187, 15%). In group A, 76% showed improvement in pelvic pain after VMR: 61% were pain free and 39% had partial improvement in their pre-existing pelvic pain. Patients with persistent pelvic pain were younger (p = 0.01) and more likely to have revisional surgery after VMR (p = 0.0003), but there was no relation to the indication for surgery (p = 0.59). In group B, 15% reported de novo pelvic pain after VMR, and this was more common in women under 50 years old (p = 0.001), when obstructed defaecation was the indication (p = 0.03), in mesh erosion (p = <0.05) and when associated with revisional surgery (p = 0.005). CONCLUSION: Pelvic pain is common (39%) in patients undergoing prolapse surgery, and VMR improves this pain in most patients (76%). However, a significant number of patients fail to improve (12%), experience worsening of pain (12%) or develop de novo pelvic pain (15%).

Outcomes of rectal prolapse surgery in patients with benign joint hypermobility syndrome.

BACKGROUND: Rectal prolapse is a debilitating disorder of the pelvic floor, and treatment outcomes are variable. Previous studies have identified underlying benign joint hypermobility syndrome (BJHS) in some patients. We sought to determine the outcomes of these patients after undergoing ventral rectopexy surgery (VMR). METHODS: All consecutive patients who were referred to the pelvic floor unit at our institution between February 2010 and December 2011 were considered for recruitment into the study. Following recruitment, they were assessed using the Beighton criteria to determine the presence or absence of benign joint hypermobility syndrome. Both groups underwent similar surgical interventions and were then followed up. The need for revisional surgery was recorded in both groups. RESULTS: Fifty-two patients [34 normal; M:F, 1:6; median age 61 (range 22-84) years; 18 BJHS; M:F, 0:1; median age 52 (range 25-79) years] were recruited. A total of 42 patients completed the full 1-year follow-up (26 normal, 16 benign joint hypermobility syndrome). Patients with benign joint hypermobility syndrome were significantly younger (median age 52 versus 61 years, p < 0.001) with male to female ratio of 0:1 versus 1:6, respectively. In addition, they were significantly more likely to require revisional surgery than those without the condition (31% versus 8% p < 0.001). In most cases, this was in the form of a posterior stapled transanal resection of the rectum procedure. CONCLUSIONS: Patients with BJHS presenting for rectal prolapse surgery were younger and are more likely to require further surgery for rectal prolapse recurrence than those without the condition.

Patients' Perception of Long-term Outcome After Laparoscopic Ventral Mesh Rectopexy; Single Tertiary Center Experience.

OBJECTIVE: To assess patients' long-term outcome and satisfaction after laparoscopic ventral mesh rectopexy (LVMR). SUMMARY OF BACKGROUND DATA: Data on the long-term outcome and satisfaction of patients undergoing LVMR are limited. METHODS: Patients who underwent LVMR between 2004 and 2017 were identified from a prospectively maintained database. We attempted to contact all patients by telephone for an interview using a standardized questionnaire to record pre-LVMR symptoms, long-term outcome, and overall satisfaction. RESULTS: Total number of patients who underwent LVMR was 848 and 99(12%) were deceased at follow-up. In the end, 544 (64%) patients were contacted successfully and 478 (56%) were able to complete the questionnaire. Median time elapsed since surgery was 7 years and mean age was 62 years. Patients' reported preoperative symptoms were obstructed defecation syndrome in 40%, fecal incontinence in 22%, combination of obstructed defecation syndrome and fecal incontinence in 21% and other conditions in 17%. Bowel symptoms were reported as improved by 69% of patients and worse by 12%. Pelvic pain was reported to be improved in 47% of the patients after LVMR but new onset of pelvic pain appeared in 15%. Sexual function was reported to be better and worse with equal frequency. Overall, 63% of the patients were satisfied with the outcome and 76% would recommend this procedure to others with similar symptoms. CONCLUSION: LVMR offers acceptable long-term outcomes and satisfaction. There is a mixed impact on pelvic pain and sexual function which requires careful consideration in counseling patients for this procedure.

Laparoscopic Colorectal Surgery Outcomes Improved After National Training Program (LAPCO) for Specialists in England.

OBJECTIVE: To examine the impact of The National Training Program for Lapco on the rate of laparoscopic surgery and clinical outcomes of cases performed by Lapco surgeons after completion of training. SUMMARY OF BACKGROUND DATA: Lapco provided competency-based supervised clinical training for specialist colorectal surgeons in England. METHODS: We compared the rate of laparoscopic surgery, mortality, and morbidity for colorectal cancer resections by Lapco delegates and non-Lapco surgeons in 3-year periods preceding and following Lapco using difference in differences analysis. The changes in the rate of post-Lapco laparoscopic surgery with the Lapco sign-off competency assessment and in-training global assessment scores were examined using risk-adjusted cumulative sum to determine their predictive clinical validity with predefined competent scores of 3 and 5 respectively. RESULTS: One hundred eight Lapco delegates performed 4586 elective colo-rectal resections pre-Lapco and 5115 post-Lapco while non-Lapco surgeons performed 72,930 matched cases. Lapco delegates had a 37.8% increase in laparoscopic surgery which was greater than non-Lapco surgeons by 20.9% [95% confidence interval (CI), 18.5-23.3, P < 0.001) with a relative decrease in 30-day mortality by -1.6% (95% CI, -3.4 to -0.2, P = 0.039) and 90-day mortality by -2.3% (95% CI, -4.3 to -0.4, P = 0.018). The change point of risk-adjusted cumulative sum was 3.12 for competency assessment tool and 4.74 for global assessment score whereas laparoscopic rate increased from 44% to 66% and 40% to 56%, respectively. CONCLUSIONS: Lapco increased the rate of laparoscopic colorectal cancer surgery and reduced mortality and morbidity in England. In-training competency assessment tools predicted clinical performance after training.

Maintaining Standards in Colorectal Cancer Surgery During the Global Pandemic: A Cohort Study.

AIM: Cancer surgery in the COVID-19 pandemic presents many new challenges. For each patient, the risk of contracting COVID-19 during the perioperative period, with the potential for life-threatening sequelae (1), has to be weighed against the risk of delaying treatment. We assessed the response and short-term outcomes from elective colorectal cancer surgery during the pandemic at our institution. METHOD: We report a prospective cohort study of all elective colorectal surgery cases performed at our Trust during the 11 weeks following the national UK lockdown on 23rd March 2020, compared with the same time period in 2019. RESULTS: Eighty-five colorectal operations were performed during the 2020 (COVID) time period, and 179 performed in the 2019 (non-COVID) time period. A significantly higher proportion of cases during the COVID period were cancer-related (66% vs 26%, p < 0.00001). There was no difference in length of hospital stay, complications or readmissions. There were no mortalities in either cohort. Among the cancer patients, there were no differences in TMN staging, R1 resection rate or lymph node yields. No elective patient tested positive for COVID-19 during the perioperative period. CONCLUSION: At the height of the COVID pandemic, we maintained delivery the of high-quality elective colorectal cancer surgery, with no worsening of short-term outcomes and no compromise in the quality of cancer resections. Ongoing monitoring of this cohort is essential. The risks associated with COVID-19 will continue for some time, necessitating adaptive responses to maintain high-quality cancer services.

Impact of Suture Type on Erosion Rate After Laparoscopic Ventral Mesh Rectopexy: A Case-Matched Study.

BACKGROUND: There has been increasing concern and scrutiny in the use of mesh for certain pelvic organ prolapse procedures. However, mesh erosion was often associated with sites of suture fixation of the mesh to the rectum or vagina. Thus, in response to this finding, we replaced our suture material with absorbable monofilament suture. OBJECTIVE: The purpose of this study was to compare the rates of mesh-related complications after laparoscopic ventral mesh rectopexy, according to the type of suture used in fixation of mesh. DESIGN: This was retrospective cohort study. SETTINGS: This study was performed at a high-volume, tertiary care center. It was conducted using a prospective database including patients who underwent laparoscopic ventral mesh rectopexy over a 7-year period. PATIENTS: A total of 495 cases were included; 296 (60%) laparoscopic ventral mesh rectopexies were performed using a nonabsorbable suture compared with 199 (40%) with an absorbable suture in a case-matched analysis. In addition, 151 cases of laparoscopic ventral mesh rectopexy with nonabsorbable were matched based on age, sex, and time of follow-up, with an equal number of patients using absorbable monofilament suture. MAIN OUTCOMES MEASURES: Primary outcome was symptomatic mesh erosion after rectopexy. Secondary outcomes included other mesh-related complications and/or reoperations. RESULTS: The erosion rate was 2% (6/495) in the nonabsorbable suture group, including 4 erosions into the rectum and 2 into the vagina. There was no erosion in the group with absorbable suture. This difference was maintained after matching: after a median follow-up of 6 (12) months, there was no erosion in the absorbable suture group versus 3.3% erosion (n = 5) in the nonabsorbable suture group (p = 0.03). LIMITATIONS: This study was limited by its retrospective design. CONCLUSIONS: Mesh-related complications are reduced using absorbable sutures compared with nonabsorbable sutures when performing laparoscopic ventral mesh rectopexy with synthetic mesh without an increase in rectopexy failures. See Video Abstract at http://links.lww.com/DCR/B49. IMPACTO DEL TIPO DE SUTURA EN LA TASA DE EROSIóN DESPUéS DE LA RECTOPEXIA VENTRAL LAPAROSCóPICA CON MALLA: UN ESTUDIO DE CASOS EMPAREJADOS: Ha habido una creciente preocupación y escrutinio en el uso de la malla para ciertos procedimientos de prolapso de órganos pélvicos. Sin embargo, la erosión de la malla a menudo se asoció con sitios de fijación de sutura de la malla al recto o la vagina. Por lo tanto, en respuesta a este hallazgo, reemplazamos nuestro material de sutura con sutura de monofilamento absorbible.Comparar las tasas de complicaciones relacionadas con la malla después de la rectopexia laparoscópica de malla ventral, de acuerdo al tipo de sutura utilizada en la fijación de la malla.Este fue un estudio de cohorte retrospectivo.Este estudio se realizó en un centro de atención de tercer nivel de alto volumen. Se realizó utilizando una base de datos prospectiva que incluía pacientes que se sometieron a una rectopexia de malla ventral laparoscópica durante un período de 7 años.Se incluyeron un total de 495 casos; 296 (60%) rectopexias de malla ventral laparoscópica utilizando una sutura no reabsorbible en comparación con 199 (40%) con una sutura absorbible en un análisis de casos emparejados. Además, 151 casos de rectopexia ventral laparoscópica con malla no absorbible se emparejaron según la edad, el sexo y el tiempo de seguimiento con un número igual de pacientes que usaban sutura de monofilamento absorbible.La medida de resultado primaria fue la erosión sintomática de la malla después de la rectopexia. La medida de resultado secundarias incluyeron otras complicaciones y/o reoperaciones relacionadas con la malla.La tasa de erosión fue del 2% (6/495) en el grupo de sutura no absorbible; 4 erosiones en el recto y 2 en la vagina. No hubo erosión en el grupo con sutura absorbible. Esta diferencia se mantuvo después del emparejamiento: después de una mediana de seguimiento de 6 (12) meses, no hubo erosión en el grupo de sutura absorbible versus 3.3% de erosión (n = 5) en el grupo de sutura no absorbible (p = 0.03).Este estudio estuvo limitado por su diseño retrospectivo.Las complicaciones relacionadas con la malla se reducen utilizando suturas absorbibles en comparación con las suturas no absorbibles cuando se realiza la rectopexia de malla ventral laparoscópica con malla sintética, sin un aumento en los fracasos de rectopexia. Vea el Resumen del Video en http://links.lww.com/DCR/B49.

Transanal total mesorectal excision (TaTME) versus laparoscopic TME for MRI-defined low rectal cancer: a propensity score-matched analysis of oncological outcomes.

BACKGROUND: While a shift to minimally invasive techniques in rectal cancer surgery has occurred, non-inferiority of laparoscopy in terms of oncological outcomes has not been definitely demonstrated. Transanal total mesorectal excision (TaTME) has been pioneered to potentially overcome difficulties experienced when operating with a pure abdominal approach deep down in the pelvis. This study aimed to compare short-term oncological results of TaTME versus laparoscopic TME (lapTME), based on a strict anatomical definition for low rectal cancer on MRI. METHODS: From June 2013, all consecutive TaTME cases were included and compared to lapTME in a single institution. Propensity score-matching was performed for nine relevant factors. Primary outcome was resection margin involvement (R1), secondary outcomes included intra- and post-operative outcomes. RESULTS: After matching, forty-one patients were included in each group; no significant differences were observed in patient and tumor characteristics. The resection margin was involved in 5 cases (12.2%) in the laparoscopic group, versus 2 (4.9%) TaTME cases (P = 0.432). The TME specimen quality was complete in 84.0% of the laparoscopic cases and in 92.7% of the TaTME cases (P = 0.266). Median distance to the circumferential resection margin (CRM) was 5 mm in lapTME and 10 mm in TaTME (P = 0.065). Significantly more conversions took place in the laparoscopic group, 9 (22.0%) compared to none in the TaTME group (P < 0.001). Other clinical outcomes did not show any significant differences between the two groups. CONCLUSION: This is the first study to compare results of TaTME with lapTME in a highly selected patient group with MRI-defined low rectal tumors. A significant decrease in R1 rate could not be demonstrated, although conversion rate was significantly lower in this TaTME cohort.

Methylene blue fluorescence of the ureter during colorectal surgery.

BACKGROUND: Iatrogenic ureteric injury is a serious complication of colorectal surgery. Incidence is estimated to be between 0.3 and 1.5%. Of all ureteric injuries, 9% occur during colorectal procedures. Ureteric stents are utilised as a method to reduce the risk of injury; however, these are not without risk and do not guarantee prevention of injury. Fluorescence is a safe and effective alternative for intraoperative ureteric localisation. This proof of principle study aims to assess the use of methylene blue to fluoresce the ureter during colorectal surgery. METHOD: Patients undergoing elective colorectal surgery were included in this open label, non-randomised study. Methylene blue was administered intravenously at varying doses (0.25-1 mg/kg) over 5 min, 10-15 min prior to entering 'ureteric territory.' Fluorescence was assessed using the PINPOINT Deep Red laparoscopic system at fixed time points by the surgeon and an independent observer. RESULTS: 42 patients received methylene blue; 2 patients were excluded from analysis. Of the 69 ureters assessed, 64 were seen under fluorescence. Of these, 14 were not visible under white light. 50 ureters were observed with both fluorescence and white light with 14 of these being seen earlier with fluorescence. In ten cases, fluorescence revealed the ureter to be in a different location than suspected. CONCLUSION: Fluorescence is a promising method to allow visualisation of the ureter, where it is not identified easily under standard operative conditions, thereby improving safety and reducing operative time and difficulty.

What To Do With Lateral Nodal Disease in Low Locally Advanced Rectal Cancer? A Call for Further Reflection and Research.

BACKGROUND: There remains a lack of international consensus on the appropriate management of lateral nodal disease. Although the East manages this more aggressively with lateral lymph node dissections, the West aims to eradicate small-volume disease with neoadjuvant chemoradiotherapy and lateral nodal disease is not considered for routine surgical treatment. However, recent studies have shown that, despite neoadjuvant treatment, a significant number of patients with lateral nodal disease develop local recurrence in the lateral compartment after total mesorectal excision. OBJECTIVE: The aim of this study is to assess the role of the pretreatment features of lateral nodes on MRI in regard to local recurrence. DESIGN: All patients operated on for low locally advanced rectal cancer over a 5-year period were evaluated retrospectively. SETTINGS: This study was conducted at a single expert center. PATIENTS: The MRIs of a total of 313 patients were reviewed, and only those with rectal cancers up to 8 cm from the anorectal junction, measured on MRI, were selected. This left 185 patients; of these, 58 patients had clinical T1 or T2 tumors as assessed on MRI, identifying 127 patients who had cT3/T4 tumors that were included in this study. MAIN OUTCOME MEASURES: The primary outcomes measured were lateral local recurrence and multivariate analyses. RESULTS: The lateral local recurrence rate was significantly higher (33.3% 4-year rate) in patients with nodes larger than 10 mm than in patients with smaller nodes (10.1%, p = 0.03), despite patients being irradiated in the lateral compartment. LIMITATIONS: Because this is a relatively uncommon disease, patient numbers are low, and a multicenter study is needed to further address lateral nodal disease in low rectal cancer. CONCLUSIONS: Chemoradiotherapy with total mesorectal excision might not be sufficient in a selected group of patients. Further research is needed about which pretreatment features of the lateral nodes predict local recurrence and what is needed to prevent these from developing. See Video Abstract at http://links.lww.com/DCR/A338.

Dynamic Article: Permanent Sacral Nerve Stimulation Under Local Anesthesia: Feasibility, Best Practice, and Patient Satisfaction.

BACKGROUND: The increasing incidence of fecal incontinence and the use of sacral neuromodulation have an increasing impact on health care providers and health care costs. OBJECTIVE: The purpose of this study was to investigate the technical and clinical success rates, complications, and patient satisfaction of the implantation of permanent sacral nerve stimulation under local anesthesia. DESIGN: A cohort analysis of consecutive patients with sacral nerve stimulation for fecal incontinence over a period of 1 year was performed. SETTINGS: This study was conducted at a specialized pelvic floor unit in a tertiary care center. PATIENTS: Sixty-one patients were available for the assessment after 1-year follow-up. MAIN OUTCOME MEASURES: Technical success, procedural time, and complications were noted. Clinical outcome (including Fecal Incontinence Severity Index, Fecal Incontinence Quality of Life scale, and Gastrointestinal Quality of Life Index were collected prospectively before and after treatment. RESULTS: All procedures were successfully completed under local anesthesia, with a median total procedural time of 50 minutes (range, 26-72 minutes). All patients were discharged on the day of their procedure. Postoperative complications occurred in 3 patients (4.9%). At 3 months follow-up, the median Fecal Incontinence Severity Index score was reduced from 37 to 27 (p = 0.001). Both the Fecal Incontinence Quality of Life scale and the Gastrointestinal Quality of Life Index had improved from 63 to 82 (p < 0.001) and 72 to 90 (p = 0.012). At a mean follow-up of 13 months, both the Fecal Incontinence Quality of Life scale and the Gastrointestinal Quality of Life Index improved further to 90 (p < 0.001) and 94 (p < 0.001). All patients would recommend the procedure under local anesthesia to other patients. No patients experienced leg pain during follow-up. LIMITATIONS: This study involved a relatively small group of patients, and patient satisfaction was only recorded for the last 22 patients. No exact cost calculations were made. CONCLUSIONS: Permanent sacral nerve stimulation implantation under local anesthesia has high technical and clinical success rates. It is safe, well tolerated by patients, and has obvious logistical and financial benefits.

Short-term Outcomes of a Randomized Pilot Trial of 2 Treatment Regimens of Transcutaneous Tibial Nerve Stimulation for Fecal Incontinence.

BACKGROUND: Fecal incontinence is a socially disabling condition that affects ≤15% of adults. Neuromodulatory treatments for fecal incontinence are now well established. Less invasive, cheaper, and more ambulatory forms of neuromodulation are under exploration. OBJECTIVE: The purpose of this study was to assess the acceptability and safety of a new ambulatory tibial nerve stimulation device and to determine clinical effect size for 2 differing regimens of therapy. DESIGN: This was a randomized, investigator-blinded, parallel-arm, 6-week pilot trial. SETTINGS: The study was conducted at 7 United Kingdom trial centers. Patients were initially reviewed in the trial center, with subsequent applications of the device performed in the patients home setting. PATIENTS: A total of 43 eligible patients (38 women) who failed conservative management of fecal incontinence were included in the study. INTERVENTION: The study intervention involved twice-weekly, 1- versus 4-hour transcutaneous tibial nerve stimulation for 6 weeks (total of 12 treatments). MAIN OUTCOME MEASURES: Standard fecal incontinence outcome tools (bowel diary, symptom severity score, and generic quality-of-life instruments) were used to collect data at baseline and at 2 weeks posttreatment cessation. RESULTS: A total of 22 patients were randomly assigned to the 1-hour group and 21 to the 4-hour group. Improvements in fecal incontinence outcomes were observed for both groups, including median urge incontinence episodes per week at baseline and posttreatment (1-hour group 2.0 to 0.5 versus 4-hour group 4.0 to 1.0) and deferment time (1-hour group 2.0 to 2.0 minutes versus 4-hour group 0.5 to 5.0 minutes). Accompanying changes were observed in physical functioning domains of quality-of-life instruments. There were no adverse events, and the treatment was highly acceptable to patients. LIMITATIONS: Limitations included the pilot design and lack of control arm in the study. Future trials would need to address these limitations. CONCLUSIONS: This pilot study provides evidence that transcutaneous tibial nerve stimulation with a new ambulatory device is safe and acceptable for the management of fecal incontinence. Additional study is warranted to investigate clinical effectiveness.

A Multicenter Collaboration to Assess the Safety of Laparoscopic Ventral Rectopexy.

BACKGROUND: Concerns have been raised regarding the potential risk of mesh complications after laparoscopic ventral rectopexy. OBJECTIVE: This study aimed to determine the risk of mesh and nonmesh morbidity after laparoscopic ventral rectopexy and to compare the safety of synthetic meshes with biological grafts. DESIGN: This was a retrospective review. SETTINGS: The study used data collated from prospective pelvic floor databases in 5 centers (3 in the United Kingdom, 1 in Australia, and 1 in Italy). PATIENTS: All of the patients undergoing laparoscopic ventral rectopexy over a 14-year period (1999-2013) at these centers were included in the study. MAIN OUTCOME MEASURES: The primary outcome was mesh morbidity, classified as vaginal erosion, rectal erosion, rectovaginal fistula, or perineal erosion. Secondary outcomes were nonmesh morbidity. RESULTS: A total of 2203 patients underwent surgery; 1764 (80.1%) used synthetic mesh and 439 (19.9%) used biological grafts. There were 2 postoperative deaths (0.1%). Forty-five patients (2.0%) had mesh erosion, including 20 vaginal, 17 rectal, 7 rectovaginal fistula, and 1 perineal. Twenty-three patients (51.1%) required treatment for minor erosion morbidity (local excision of stitch/exposed mesh), and 18 patients (40.0%) were treated for major erosion morbidity (12 laparoscopic mesh removal, 3 mesh removal plus colostomy, and 3 anterior resection). Erosion occurred in 2.4% of synthetic meshes and 0.7% of biological meshes. The median time to erosion was 23 months. Nonmesh complications occurred in 11.1% of patients. LIMITATIONS: This was a retrospective study including patients with minimal follow-up. The study was unable to determine whether patients will develop future erosions, currently have asymptomatic erosions, or have been treated in other institutions for erosions. CONCLUSIONS: Laparoscopic ventral rectopexy is a safe operation. Mesh erosion rates are 2% and occasionally require resectional surgery that might be reduced by the use of biological graft. An international ventral mesh registry is recommended to monitor mesh problems and to assess whether type of mesh has any impact on functional outcomes or the need for revisional surgery for nonerosion problems.

Sacral neuromodulation for faecal incontinence: is the outcome compromised in patients with high-grade internal rectal prolapse?

BACKGROUND: High-grade internal rectal prolapse appears to be one of the contributing factors in the multifactorial origin of faecal incontinence. Whether it affects the outcome of sacral neuromodulation is unknown. We compared the functional results of sacral neuromodulation for faecal incontinence in patients with and without a high-grade internal rectal prolapse. METHOD: One hundred six consecutive patients suffering from faecal incontinence, who were eligible for sacral neuromodulation between 2009 and 2012, were identified from a prospective database. All patients underwent preoperative defaecating proctography, anorectal manometry and ultrasound. Symptoms were assessed preoperatively and at 12 months after operation using a standardized questionnaire incorporating the Faecal Incontinence Severity Index (FISI range = 0-61) and the Gastrointestinal Quality of Life Index (GIQLI). Success was defined as a decrease in the FISI score of 50 % or more. RESULTS: High-grade internal rectal prolapse (HIRP) was found in 36 patients (34%). The patient characteristics were similar in both groups. Temporary test stimulation was successful in 60 patients without HIRP (86%) and in 25 patients with HIRP (69 %) (p = 0.03). A permanent pulse generator was then implanted on these patients. After 1-year follow-up, the median FISI was reduced in patients without HIRP from 37 to 23 (p < 0.01). No significant change in FISI score was observed in patients with a HIRP (FISI, 38 to 34; p = 0.16). Quality of life (GIQLI) was only improved in patients without HIRP. A successful outcome per protocol was achieved in 31 patients without HIRP (52%) versus 4 patients with HIRP (16%) (p < 0.01). CONCLUSION: The presence of a high-grade internal rectal prolapse has a detrimental effect on sacral neuromodulation for faecal incontinence.

Near-infrared (NIR) perfusion angiography in minimally invasive colorectal surgery.

BACKGROUND: Anastomotic leakage is a devastating complication of colorectal surgery. However, there is no technology indicative of in situ perfusion of a laparoscopic colorectal anastomosis. METHODS: We detail the use of near-infrared (NIR) laparoscopy (PinPoint System, NOVADAQ, Canada) in association with fluorophore [indocyanine green (ICG), 2.5 mg/ml] injection in 30 consecutive patients who underwent elective minimally invasive colorectal resection using the simultaneous appearance of the cecum or distal ileum as positive control. RESULTS: The median (range) age of the patients was 64 (40-81) years with a median (range) BMI of 26.7 (20-35.5) kg/m(2). Twenty-four patients had left-sided resections (including six low anterior resections) and six had right-sided resections. Of the total, 25 operations were cancer resections and five were for benign disease [either diverticular strictures (n = 3) or Crohn's disease (n = 2)]. A high-quality intraoperative ICG angiogram was achieved in 29/30 patients. After ICG injection, median (range) time to perfusion fluorescence was 35 (15-45) s. Median (range) added time for the technique was 5 (3-9) min. Anastomotic perfusion was documented as satisfactory in every successful case and encouraged avoidance of defunctioning stomas in three patients with low anastomoses. There were no postoperative anastomotic leaks. CONCLUSION: Perfusion angiography of colorectal anastomosis at the time of their laparoscopic construction is feasible and readily achievable with minimal added intraoperative time. Further work is required to determine optimum sensitivity and threshold levels for assessment of perfusion sufficiency, in particular with regard to anastomotic viability.

Interface Modifications of Lithium Metal Anode for Lithium Metal Batteries.

Lithium metal batteries (LMBs) enable much higher energy density than lithium-ion batteries (LIBs) and thus hold great promise for future transportation electrification. However, the adoption of lithium metal (Li) as an anode poses serious concerns about cell safety and performance, which has been hindering LMBs from commercialization. To this end, extensive effort has been invested in understanding the underlying mechanisms theoretically and experimentally and developing technical solutions. In this review, we devote to providing a comprehensive review of the challenges, characterizations, and interfacial engineering of Li anodes in both liquid and solid LMBs. We expect that this work will stimulate new efforts and help peer researchers find new solutions for the commercialization of LMBs.

Faecal incontinence-a comprehensive review.

Introduction: Faecal incontinence (FI) is a distressing and often stigmatizing condition characterised as the recurrent involuntary passage of liquid or solid faeces. The reported prevalence of FI exhibits considerable variation, ranging from 7 to 15% in the general population, with higher rates reported among older adults and women. This review explores the pathophysiology mechanisms, the diagnostic modalities and the efficiency of treatment options up to date. Methods: A review of the literature was conducted to identify the pathophysiological pathways, investigation and treatment modalities. Result and discussion: This review provides an in-depth exploration of the intricate physiological processes that maintain continence in humans. It then guides the reader through a detailed examination of diagnostic procedures and a thorough analysis of the available treatment choices, including their associated success rates. This review is an ideal resource for individuals with a general medical background and colorectal surgeons who lack specialized knowledge in pelvic floor disorders, as it offers a comprehensive understanding of the mechanisms, diagnosis, and treatment of faecal incontinence (FI).

Laparoscopic ventral rectopexy for fecal incontinence associated with high-grade internal rectal prolapse.

BACKGROUND: The role of internal rectal prolapse in the origin of fecal incontinence remains to be defined. In our institution, laparoscopic ventral rectopexy is offered to patients with high-grade internal prolapse and fecal incontinence. OBJECTIVE: The present study was designed to evaluate the functional outcome after laparoscopic ventral rectopexy in patients with fecal incontinence associated with high-grade internal rectal prolapse. DESIGN: This study was designed as a prospective observational study. SETTINGS: The study took place in a university hospital. PATIENTS: Between 2009 and 2011, 72 patients with fecal incontinence not responding to maximum medical treatment (including biofeedback) were included. All patients had a grade III or grade IV rectal prolapse. INTERVENTION: Laparoscopic ventral rectopexy was performed. MAIN OUTCOME MEASURES: Preoperative endoanal ultrasonography and anorectal manometry were performed. Fecal continence was evaluated by using the Rockwood Fecal Incontinence Severity Index score before and 1 year after surgery. RESULTS: The median fecal incontinence severity index score 1 year after surgery was lower than the median score before surgery (15 versus 31; p < 0.01), representing an improvement in fecal continence. LIMITATIONS: This was a preliminary observational study with no control group, no postoperative proctography, and no postoperative anal physiology. CONCLUSION: Laparoscopic ventral rectopexy can improve symptoms of fecal incontinence in patients with a high-grade internal rectal prolapse. Internal rectal prolapse contributes to the multifactorial origin of fecal incontinence.

Near-infrared (NIR) laparoscopy for intraoperative lymphatic road-mapping and sentinel node identification during definitive surgical resection of early-stage colorectal neoplasia.

BACKGROUND: Appropriate lymphatic assessment is a cornerstone of definitive surgical resection for colorectal cancer. Near-infrared (NIR) laparoscopy may allow real-time intraoperative identification of territorial lymphatic drainage and sentinel nodes in patients with early-stage disease prior to radical basin resection. METHODS: With IRB approval and individual consent, consecutive patients with radiologically localized neoplasia underwent peritumoral submucosal injection of indocyanine green (ICG, a fluorophore capable of injection site tattooing and efferent lymphatic migration) prior to standard laparoscopic oncological resection. Intraoperatively, a prototype NIR laparoscope provided both white light and, by switch activation, NIR irradiation with or without discrete spectral back-filtration. Fluorescence identification of sentinel nodes prior to formal specimen dissection allowed their identification for separate histopathological analysis by in situ clipping when found within the specimen or selective lymphadenectomy by "berry-picking" when such nodes lay outside of the standard resection field. Concordance with nonsentinel nodes was then analysed. RESULTS: Eighteen patients (mean age = 66.4 years [range = 47.9-80.1], mean BMI = 29.1 [range = 20.0-39.9]) were studied. Fourteen had biopsy-proven carcinoma and four had endoscopically unresectable dysplasia. Mesocolic sentinel nodes (mean = 4.1/patient) were rendered obvious by fluorescence either solely within the standard resection field (n = 14) or both within and without the planned field (n = 4) within minutes of dye injection in every case. Laparoscopic ultrasound (n = 5) as well as histopathological analysis demonstrated oncologic correlation of mesocolic sentinel with corresponding territory nonsentinel nodes, correctly confirming the presence of mesocolic disease in 3 patients and the absence of such lymphatic spread in the remaining 15 patients. CONCLUSIONS: In this study, NIR laparoscopy with ICG mapping allowed ready and rapid confirmation of mesocolic lymphatic drainage patterns and sentinel node identification. With further validation, this technology and technique promises precise, tailored resection surgery by indicating basin pattern and status in advance of radical lymphadenectomy.

Influence of incorrect staging of colorectal carcinoma on oncological outcome: are we playing safely?

Accurate preoperative staging of colorectal cancers is critical in selecting patients for neoadjuvant therapy prior to resection. Inaccurate staging, particularly understaging, may lead to involved resection margins and poor oncological outcomes. Our aim is to determine preoperative imaging accuracy of colorectal cancers compared to histopathology and define the effect of inaccurate staging on patient selection for neoadjuvant treatment(NT). Staging and treatment were determined for patients undergoing colorectal resections for adenocarcinomas in a single tertiary centre(2016-2020). Data were obtained for 948 patients. The staging was correct for both T and N stage in 19.68% of colon cancer patients. T stage was under-staged in 18.58%. At resection, 23 patients (3.36%) had involved pathological margins; only 7 of which had been predicted by pre-operative staging. However, the staging was correct for both T and N stage in 53.85% of rectal cancer patients. T stage was understaged in 26.89%. Thirteen patients had involved(R1)margins; T4 had been accurately predicted in all of these cases. There was a general trend in understaging both the tumor and lymphonodal involvement (T p < 0.00001 N p < 0.00001) causing a failure in administrating NT in 0.1% of patients with colon tumor, but not with rectal cancer. Preoperative radiological staging tended to understage both colonic and rectal cancers. In colonic tumours this may lead to a misled opportunity to treat with neoadjuvant therapy, resulting in involved margins at resection.