Ligation of intersphincteric fistula tract (LIFT) for trans-sphincteric cryptoglandular anal fistula: long-term impact on faecal continence.

BACKGROUND: The ligation of intersphincteric fistula tract is a surgical technique designed to treat trans-sphincteric anal fistulas aiming to preserve sphincter integrity. Recent studies suggest its efficacy in short-term fistula healing with limited impact on continence. However, comprehensive prospective data on long-term outcomes, including recurrence and bowel continence, are limited. The present study aims to report on the long-term functional outcomes. METHODS: Patients who underwent the ligation of intersphincteric fistula tract procedure for trans-sphincteric cryptoglandular anal fistulas between July 2012 and October 2018 at two Dutch referral centres were retrospectively reviewed. The primary outcome of interest was the long-term bowel continence after the ligation of intersphincteric fistula tract procedure, using the faecal incontinence severity index. Short-term data (collected in 2018) and long-term data (collected in 2023) on bowel continence, healing rates and recurrences were obtained through electronic records and Rockwood questionnaires. Sankey diagrams were used to visually represent individual variations in continence status (preoperative versus follow-up). RESULTS: Among 110 patients included (50% female, median follow-up 92 months), 101 patients (92%) were treated with previous surgeries (median 2, range 0-6) and 80% had previous seton drainage. Preligation of intersphincteric fistula tract, 16% of the patients reported incontinence (mean(s.d.) faecal incontinence severity index: 2.4(7.5), increasing to 18% after ligation of intersphincteric fistula tract at short-term follow-up, including 11% newly induced cases. Long-term follow-up collected using Rockwood questionnaires (63% response rate) in 69 patients uncovered a 74% incontinency rate (mean(s.d.) faecal incontinence severity index: 9.22(9.5). In those patients without subsequent surgery 49% (17 of 35) reported incontinence at long-term follow-up. Primary fistula healing after ligation of intersphincteric fistula tract was 28%. Preoperative seton drainage significantly improved healing rates (33% versus 9%). Notably, 43% (34 of 79) of unhealed fistulas transitioned into intersphincteric tracts; in these patients, 19 were treated with subsequent fistulotomy achieving cure in 18 cases. CONCLUSIONS: Ligation of intersphincteric fistula tract healing rates fell below recent literature standards. Although the immediate impact on postoperative continence appears minimal, long-term incontinence rates are concerning. In recognizing the deterioration of individual continence, we advocate for a patient-centered approach and urge fellow researchers and clinicians to collect comprehensive prospective continence data.

Effects of perineal massage at different stages on perineal and postpartum pelvic floor function in primiparous women: a systematic review and meta-analysis.

BACKGROUND: Perineal massage, as a preventive intervention, has been shown to reduce the risk of perineal injuries and may have a positive impact on pelvic floor function in the early postpartum period. However, there is still debate concerning the best period to apply perineal massage, which is either antenatal or in the second stage of labor, as well as its safety and effectiveness. Meta-analysis was used to evaluate the effect of implementing perineal massage in antenatal versus the second stage of labor on the prevention of perineal injuries during labor and early postpartum pelvic floor function in primiparous women. METHODS: We searched nine different electronic databases from inception to April 16, 2024. The randomized controlled trials (RCTs) we included assessed the effects of antenatal and second-stage labor perineal massage in primiparous women. All data were analyzed with Revman 5.3, Stata Statistical Software, and Risk of Bias 2 was used to assess the risk of bias. Subgroup analyses were performed based on the different periods of perineal massage. The primary outcomes were the incidence of perineal integrity and perineal injury. Secondary outcomes were perineal pain, duration of the second stage of labor, postpartum hemorrhage, urinary incontinence, fecal incontinence, and flatus incontinence. RESULTS: This review comprised a total of 10 studies that covered 1057 primigravid women. The results of the analysis showed that perineal massage during the second stage of labor reduced the perineal pain of primigravid women in the immediate postpartum period compared to the antenatal period, with a statistical value of (MD = -2.29, 95% CI [-2.53, -2.05], P < 0.001). Additionally, only the antenatal stage reported that perineal massage reduced fecal incontinence (P = 0.04) and flatus incontinence (P = 0.01) in primiparous women at three months postpartum, but had no significant effect on urinary incontinence in primiparous women at three months postpartum (P = 0.80). CONCLUSIONS: Reducing perineal injuries in primiparous women can be achieved by providing perineal massage both antenatally and during the second stage of labor. Pelvic floor function is improved in the postnatal phase by perineal massage during the antenatal stage. TRIAL REGISTRATION: CRD42023415996 (PROSPERO).

Incontinence in people living with dementia.

Dementia and incontinence are both prevalent in older age; yet, neither are an inevitable or normal part of ageing. It has been recognised that there is a skills and knowledge gap in professionals assessing and managing incontinence for people living with dementia. All too often, assumptions are made that incontinence is a symptom of dementia and that nothing can be done if a person living with dementia experiences episodes of incontinence. While dementia may impact on a person's ability to remain continent, it may not be the sole cause, and there may be treatments and strategies that can reduce the incidence in those affected. Therefore, a person-centred continence assessment should be undertaken to promote continence and reduce the impact of incontinence for people living with dementia and those who care for them. This paper will highlight some of the issues that are important for health and social care professionals to explore and identify, assess and manage incontinence to improve outcomes for families affected by dementia.

Guidance for the provision of absorbent products for adult incontinence.

The Association for Continence Professionals first published their guidance for the provision of absorbent products for adult incontinence in 2017. This consensus document is targeted towards commissioning leads, NHS Trust Boards, Bladder and Bowel leads, among others, and has been updated over the years to ensure that all adults who suffer with continence issues undergo a comprehensive assessment and have access to an equitable service. This article provides an overview of the latest guidelines which were published in February 2023.

Is the varying management of incontinence-associated dermatitis due to a lack of understanding of etiology?

Incontinence-associated dermatitis, previously and sometimes still referred to as moisture lesions or moisture damage, is a commonly seen contact dermatitis that is a reactive response of the skin to chronic contact to urine and faecal matter. Understanding the etiology is fundamental to creating a skin care plan and successfully prevention. Systemic reviews and studies have shown that the continued variability in management results from a combination of knowledge base, observation, diagnosis, and product selection. This article aims to improve clinicians' understanding of incontinence-associated dermatitis and its management.

Pudendal nerve neurolysis outcomes for urogenital and rectal disorders in patients suffering from pudendal nerve entrapment: A systematic review.

PURPOSE: Pudendal neuropathy is an uncommon condition that exhibits several symptoms depending on the site of nerve entrapment. This study aims to evaluate the efficacy of pudendal nerve neurolysis (PNN) in improving lower urinary tract symptoms, anal and/or urinary incontinence, and sexual dysfunctions. MATERIALS AND METHODS: A systematic literature search was performed on 20 May 2023 using Scopus, PubMed, and Embase. Only English and adult papers were included. Meeting abstracts and preclinical studies were excluded. RESULTS: Twenty-one papers were accepted, revealing significant findings in the field. The study identified four primary sites of pudendal nerve entrapment (PNE), with the most prevalent location likely being at the level of the Alcock canal. Voiding symptoms are commonly exhibited in patients with PNE. PNN improved both urgency and voiding symptoms, and urinary and anal incontinence but is less effective in cases of long-standing entrapment. Regarding sexual function, the recovery of the somatic afferent pathway results in an improvement in erectile function early after neurolysis. Complete relief of persistent genital arousal disorder occurs in women, although bilateral PNN is necessary to achieve the efficacy. PNN is associated with low-grade complications. CONCLUSIONS: PNN emerges as a viable option for addressing urinary symptoms, fecal incontinence, erectile dysfunction, and female sexual arousal in patients suffering from PNE with minimal postoperative morbidity.

Fecal incontinence risk factors and pregnancy.

MATERIALS AND METHODS: We conducted an analysis on 231 pregnant women. A proctologist examined the patients three times: in the 1st trimester (within the first 15 weeks), in the 3rd trimester (29-40 weeks), and 12 months after childbirth. RESULTS: The total number of fecal incontinence observations among women included in the study was 66 cases (28.6%), detected at the final visit. Risk factors for fecal incontinence with a high probability were age over 36 years (P = 0.001), low physical activity (P = 0.034), three or more pregnancies resulting in childbirth (P = 0.022), history of hemorrhoids (P = 0.027), perianal discomfort on the first visit (P = 0.045), and constipation on the first visit (P = 0.006). Factors such as being overweight, marital status, education, living conditions, living area, and infant size did not have significance for fecal incontinence. DISCUSSION: Pregnancy- and obstetric-related risk factors contributing to fecal incontinence are multifactorial, including factors such as multiple childbirths with trauma to the pelvic muscles or anal sphincter muscles, chronic constipation, age, and vaginal deliveries. However, currently, there is no clear concept for the prevention of fecal incontinence in pregnant women. CONCLUSION: The prevalence of fecal incontinence among pregnant women is 12.9%, which increases to 28.6% one year after childbirth. The most common complaint was involuntary passage of intestinal gas. Risk factors for fecal incontinence with a high probability included being over 36-years old, low physical activity, three or more pregnancies resulting in childbirth, a history of hemorrhoids, perianal discomfort, and constipation in the 1st trimester of pregnancy.

Low Anterior Resection Syndrome. Anatomical Changes after Anterior Rectal Resection.

In this editorial, the authors bring to the attention of surgeons a personal point of view with the intention of offering a series of anatomical arguments to explain the high rate of functional complications following ultralow rectal resections, resections dominated by faecal incontinence of various intensities. Having as a starting point the anatomy of the pelvic floor and the posterior perineum, the authors are concerned with the functional outcomes of the sphincter-saving anterior rectal resection, regarding the low and ultralow resection. Technically, a conservative surgery for low rectal cancer has been currently performed. If 25 years ago the abdominoperineal resection was the gold standard for rectal cancer located under 7cm from the anal verge, nowadays the preservation of the anal canal as a partner for colon anastomosis has been accomplished. Progressively, from a desire to preserve the normal passage of stool into the anal canal, as anatomically and physiologically as possible, the distal limit of resection was lowered to 2-4 cm from the anal verge and ultra-low anastomoses were created, within the anal sphincter complex. The stated goal: keep the oncological safety standard and, at the same time, avoid definitive colostomy. Starting from the normal anatomy of the pelvic floor and the anorectal segment, the authors take a look at the alterations of the visceral, muscular, and nerve structures as a consequence of the low anterior resection and, particularly, the ultralow anterior resection. A significant degree of functional outcomes regarding defecation, with the onset of marked disabilities of anal continence, the major consequence being anal incontinence (30-70%), have been noticed. The authors go under review for the main anatomical and physiological changes that accompany anterior rectal resection. Conclusions: Thus, the following questions arise: what is the lower limit of resection to avoid total fecal incontinence? Is total incontinence a greater handicap than colostomy or is it not? The answers cannot be supported by solid arguments at this time, but the need to initiate future studies dedicated to this problem emerges.

Exploring the association between cardiovascular health and bowel health.

Chronic constipation, diarrhea, and fecal incontinence have high incidence, potential disability, and socioeconomic impact, imposing a heavy burden on the quality of life. We aim to explore the association between cardiovascular health (CVH) and bowel health from National Health and Nutrition Survey 2005-2010. CVH is assessed using Life's Essential 8 (LE8). Chronic constipation, chronic diarrhea, and fecal incontinence are assessed based on Bristol Stool Form Scale classification, bowel movements, and bowel leakage. Better health behaviors (odds ratio [OR]: 0.71, 95% confidence interval [CI] 0.53-0.94, p = 0.02) and worse health factors (OR: 1.45, CI 1.03-2.04, p = 0.04) were associated with less chronic constipation. Less chronic diarrhea is correlated with better CVH (OR: 0.53, 95% CI 0.35-0.79, p = 0.003) and health factors (OR: 0.61, CI 0.46-0.81, p = 0.001). Meanwhile, the proportion of chronic diarrhea significantly decreases when the health behaviors score exceeds 59.42. Lower fecal incontinence was associated with better health behaviors (OR: 0.63, CI 0.44-0.90, p = 0.01) CVH. Better CVH and health behaviors are both linked to lower all-cause mortality in participants with chronic constipation and chronic diarrhea. A higher health behaviors score is also associated with less all-cause mortality in patients with fecal incontinence. Maintaining CVH at the population level contributes to intestinal health, achieving the dual management of both while saving on healthcare costs. However, further prospective research is needed to confirm these associations.

Managing incontinence-associated dermatitis in the community: an overview.

Incontinence-associated dermatitis (IAD) is often treated a hygienic challenge, rather than a serious condition with potentially life-threatening consequences. More appropriate education on the management strategies specific to IAD is required, in order for personalised and effective care that reflects the critical nature of this condition to be provided. Francesca Ramadan provides an overview of the key elements of best practice in IAD management and treatment.

Sacral neuromodulation in children and adolescents with defecation disorders.

BACKGROUND: Even if understanding of neuronal enteropathies, such as Hirschsprung's disease and functional constipation, has been improved, specialized therapies are still missing. Sacral neuromodulation (SNM) has been established in the treatment of defecation disorders in adults. The aim of the study was to investigate effects of SNM in children and adolescents with refractory symptoms of chronic constipation. METHODS: A two-centered, prospective trial has been conducted between 2019 and 2022. SNM was applied continuously at individually set stimulation intensity. Evaluation of clinical outcomes was conducted at 3, 6, and 12 months after surgery based on the developed questionnaires and quality of life analysis (KINDLR). Primary outcome was assessed based on predefined variables of fecal incontinence and defecation frequency. KEY RESULTS: Fifteen patients enrolled in the study and underwent SNM (median age 8.0 years (range 4-17 years)): eight patients were diagnosed with Hirschsprung's disease (53%). Improvement of defecation frequency was seen in 8/15 participants (53%) and an improvement of fecal incontinence in 9/12 patients (75%). We observed stable outcome after 1 year of treatment. Surgical revision was necessary in one patient after electrode breakage. Urinary incontinence was observed as singular side effect of treatment in two patients (13%), which was manageable with the reduction of stimulation intensity. CONCLUSIONS: SNM shows promising clinical results in children and adolescents presenting with chronic constipation refractory to conservative therapy. Indications for patients with enteral neuropathies deserve further confirmation.

[Impact of biofeedback therapy on patients with fecal incontinence or constipation in a gastrointestinal neurophysiology unit in Bogotá, D.C.] / Impacto de la terapia de biorretroalimentación en pacientes con incontinencia fecal o constipación en una unidad de neurofisiología gastrointestinal en Bogotá, D.C.

INTRODUCTION: Treatment of functional disorders of the anorectal unit should focus on the underlying cause. Biofeedback therapy is a functional retraining of the pelvic floor that has proven useful in the treatment of constipation associated with dyssynergia and in the management of fecal incontinence. This study describes the first experiences with this form of biofeedback therapy in Colombia. OBJECTIVE: Describe our experience with biofeedback therapy in the gastrointestinal neurophysiology unit. MATERIALS AND METHODS: This historical cohort included patients with an indication for biofeedback therapy for constipation or fecal incontinence in the gastrointestinal neurophysiology unit during the data collection period. The response to therapy is described by comparing manometricfindings before and after 10 biofeedback sessions. RESULTS: 21 patients were included(71.4% women, the average age was 68, 9 with constipation and 12 with fecal incontinence.Among the patients with constipation there was a significant improvement in 71.4% of those who had rectal hyposensitivity and in 57.1% of those with dyssynergia. Biofeedback therapysignificantly increased the balloon expulsion rate (11.1 vs. 66.7%, p=0.02). In patients with fecal incontinence, there was improvement in 50% of those who had anal hypotonia and in 80% of those who had anal hyposensitivity. CONCLUSIONS: This study demonstrates that biofeedback therapy has a favorable impact on a high number of patients with constipationand fecal incontinence; in our center, the response is similar to that of the world literature.

Incontinence-associated dermatitis in older adults in residential care settings: a point prevalence study.

Incontinence-associated dermatitis (IAD) is a skin inflammation caused by contact with urine or faeces or both. It has a negative effect on the patient's quality of life and is indicative of the care provided. However, globally there is a lack of empirical data on the prevalence of IAD. AIM: To identify, for the first time, the proportion of older adults in extended care settings in Ireland affected by IAD. DESIGN: Cross-sectional, multisite, point prevalence survey, across three community extended care settings for older people in Ireland. METHODS: Two clinical nurse specialists, using the Scottish Excoriation and Moisture Related Skin Damage Tool, identified the presence of IAD through clinical observation and visual skin inspection. IAD prevalence was calculated for the total population and incontinent population sets using percentages and confidence intervals (CI). RESULTS: The prevalence of incontinence was 86.4% (n=165), a significantly higher proportion were female (P=0.003). The point prevalence of IAD across the total population and incontinent population was 11.5% (22/191; 95% CI, 7.4-19.9%) and 13.3% (22/164; 95% CI, 8.5-19.5%), respectively. Being incontinent was associated with being female, more dependent (Barthel), having possible cognitive impairment, poorer mobility (Braden and Waterlow) and a high risk of pressure ulcers (Waterlow). A logistic regression analysis found no predictor variables for IAD among the variables that met the cut-off point for this analysis. CONCLUSIONS: The study provides the first point prevalence empirical data on the occurrence of IAD in Ireland. It can inform decision-making on future planning and budgeting of new quality improvement projects and act as a benchmark for ongoing auditing of IAD.

Anorectal function and symptoms 6 months after robot-assisted laparoscopic radical prostatectomy: a single-center study.

INTRODUCTION: Robot-assisted laparoscopic radical prostatectomy (RALP) is a common procedure for the treatment of localised prostate cancer. Anorectal symptoms such as fecal incontinence (FI), rectal urgency or disturbed defecation have been reported after the operation. Anorectal function is dependent on the integrity of anal and pelvic nerves and muscles, rectal sensory function as well as rectal reservoir function. The aim of this study was to investigate the potential influence of RALP on anorectal physiological function and bowel symptoms. MATERIALS AND METHODS: In this pilot study, 29 patients with localised prostate cancer scheduled for RALP were included. Anorectal physiology was used to measure rectal sensitivity and reservoir function as well as anal sphincter pressures. Bowel symptoms were measured by a bowel function questionnaire and a 2-week bowel function diary. Measurements were done before the operation and repeated at 6 months after the operation. RESULTS: The study observed a significant postoperative increase in rectal sensory threshold for rectal balloon distention, from 20 to 40 mmHg, P < 0.001. This change is indicative of a decrease in rectal sensation after RALP. There were no other statistical significant differences in any of the physiological tests performed. Importantly, there was no change in any of the bowel symptoms after surgery. CONCLUSION: This study showed that RALP may lead to impaired rectal sensory function. This finding did not, however, seem to have any influence on the patients´ postoperative clinical bowel function.

Prevalence of colorectal symptoms and anal incontinence in patients with pelvic organ prolapse attended at an outpatient urogynecology service.

Objective: To analyze data of patients with symptomatic pelvic organ prolapse evaluated with PFDI20 and its subscales to report the prevalence of lower gastrointestinal symptoms and anal incontinence in the population of a public hospital and analyze its impact on quality of life. Methods: Cross-sectional study of patients with symptomatic POP. Patients were evaluated with demographic data, POP-Q, pelvic floor ultrasonography, urological parameters, and pelvic floor symptoms (PFDI-20), and quality of life (P-QoL) surveys. Patients were classified as CRADI-8 "positive" for colorectal symptoms, with responses "moderate" in at least 3 and/or "severe" in at least 2 of the items in the CRADI-8 questionnaires. Results: One hundred thirteen patients were included. 42.5% (48) were considered positive for colorectal symptoms on CRADI-8. 53.4% presented anal incontinence. No significant differences were found in sociodemographic variables, POP-Q stage, ultrasound parameters, or urological parameters. Positive patients had a significantly worse result in PFDI-20, POPDI (48 vs 28; p<0.001), UDI6 (51 vs 24; p<0.001), and in the areas of social limitation (44.4 vs 22.2; p = 0.045), sleep- energy (61.5 vs 44.4; p = 0.08), and severity (56.8 vs 43.7, p=0.015) according to P-QoL. Conclusion: Moderate or severe colorectal symptoms are seen in 40% of patients with symptomatic POP in our unit. Full evaluation of pelvic floor dysfunction symptoms should be performed routinely in urogynecology units.(FONIS SA12I2I53 - NCT02113969).

Sacral neuromodulation therapy for urinary and defecatory disorders: experience in a Latin American public hospital.

Objective: To show the experience of a Latin American public hospital, with SNM in the management of either OAB, NOUR or FI, reporting feasibility, short to medium-term success rates, and complications. Methods: A retrospective cohort was conducted using data collected prospectively from patients with urogynecological conditions and referred from colorectal surgery and urology services between 2015 and 2022. Results: Advanced or basic trial phases were performed on 35 patients, 33 (94%) of which were successful and opted to move on Implantable Pulse Generator (GG) implantation. The average follow-up time after definitive implantation was 82 months (SD 59). Of the 33 patients undergoing, 27 (81%)reported an improvement of 50% or more in their symptoms at last follow-up. Moreover, 30 patients (90%) with a definitive implant reported subjective improvement, with an average PGI-I "much better" and 9 of them reporting to be "excellent" on PGI-I. Conclusion: SNM is a feasible and effective treatment for pelvic floor dysfunction. Its implementation requires highly trained groups and innovative leadership. At a nation-wide level, greater diffusion of this therapy among professionals is needed to achieve timely referral of patients who require it.

Knowledge of nursing staff before and after training on incontinence-associated dermatitis.

OBJECTIVE: To verify the knowledge of nursing staff before and after training on incontinence-associated dermatitis. METHOD: A study before and after an educational intervention carried out with nursing staff from the medical and surgical clinics and intensive care unit of the university hospital in June 2023. The training took place over three meetings. Data was collected using a questionnaire administered immediately before and after the training. McNemar's test for dependent samples was used to compare before and after training. RESULTS: 25 nurses and 14 nursing technicians took part. The items that showed statistical significance were related to the identification and correct differentiation of dermatitis associated with incontinence and pressure injury; and the correct way to sanitize the skin. CONCLUSION: The training of the nursing team made it possible to assess their knowledge of how to identify, prevent and treat incontinence-associated dermatitis.

Short-term clinical and manometric outcomes of percutaneous tibial nerve stimulation for faecal incontinence: a large single-centre series.

BACKGROUND: Faecal incontinence (FI) is common, with a significant impact on quality of life. Percutaneous tibial nerve stimulation (PTNS) is a therapy for FI; however, its role has recently been questioned. Here we report the short-term clinical and manometric outcomes in a large tertiary centre. METHODS: A retrospective review of a prospective PTNS database was performed, extracting patient-reported FI outcome measures including bowel diary, the St Marks's Incontinence Score (SMIS) and Manchester Health Questionnaire (MHQ). Successful treatment was > 50% improvement in symptoms, whilst a partial response was 25-50% improvement. High-resolution anorectal manometry (HRAM) results before and after PTNS were recorded. RESULTS: Data were available from 135 patients [119 (88%) females; median age: 60 years (range: 27-82years)]. Overall, patients reported a reduction in urge FI (2.5-1) and passive FI episodes (2-1.5; p < 0.05) alongside a reduction in SMIS (16.5-14) and MHQ (517.5-460.0; p < 0.001). Some 76 (56%) patients reported success, whilst a further 20 (15%) reported a partial response. There were statistically significant reductions in rectal balloon thresholds and an increase in incremental squeeze pressure; however, these changes were independent of treatment success. CONCLUSION: Patients report PTNS improves FI symptoms in the short term. Despite this improvement, changes in HRAM parameters were independent of this success. HRAM may be unable to measure the clinical effect of PTNS, or there remains the possibility of a placebo effect. Further work is required to define the role of PTNS in the treatment of FI.

Assessment of long-term quality of life, bowel and voiding function outcomes in patients with anorectal malformation at a single UK centre.

AIMS: Assess long-term quality of life (QoL), bowel and voiding function in anorectal malformation (ARM) paediatric patients. METHOD: Retrospective review of ARM patients between 2007 and 2020 was performed. QoL (all patients), bowel and voiding function (> 5 yo) were assessed using the paediatric quality of life inventory (PedsQL), paediatric incontinence and constipation score (PICS) and dysfunctional voiding scoring system (DVSS), respectively. RESULTS: There were 122 patients (49% female, 85 > 5 yo) with ARM. Two had died, four refused, twenty-two were non-contactable, leaving ninety-four patients (65 > 5 yo) included. Mean age was 89 months (19-183), and follow-up was 86 months (13-183). Patients had significantly poorer scores for QoL, bowel and voiding function compared to published healthy controls. 57% had poor bowel function, 32% had poor voiding function and 38% required 'ancillary aids' to facilitate function. Patients using 'ancillary aids' for voiding function had a significantly lower QoL (parent: 62 vs 77; p = 0.01, patient: 66 vs 79; p = 0.05). Bowel continence was worse in those with high vs low ARM (13 vs 20, p = 0.004) and timely vs delayed diagnosis (17 vs 24, p = 0.04). CONCLUSION: Patients with ARM have significantly worse QoL, bowel and voiding function than normal healthy controls. There is a need for long-term monitoring of function and further support for these children. LEVEL OF EVIDENCE: III.

London Protocol under water-perfused HRM in a healthy population, towards novel 3D manometric parameters in an evaluation of anorectal functional disorders.

BACKGROUND/AIM: London Protocol (LP) and Classification allied to high-resolution manometry (HRM) technological evolution has updated and enhanced the diagnostic armamentarium in anorectal disorders. This study aims to evaluate LP reproducibility under water-perfused HRM, provide normal data and new parameters based on 3D and healthy comparison studies under perfusional HRM. METHODS: Fifty healthy (25 F) underwent water-perfused 36 channel HRM based on LP at resting, squeeze, cough, push, and rectal sensory. Additional 3D manometric parameters were: pressure-volume (PV) 104mmHg2.cm (resting, short and long squeeze, cough); highest and lowest pressure asymmetry (resting, short squeeze, and cough). Complementary parameters (CP) were: resting (mean pressure, functional anal canal length); short squeeze (mean and maximum absolute squeeze pressure), endurance (fatigue rate, fatigue rate index, capacity to sustain); cough (anorectal gradient pressure); push (rectum-anal gradient pressure, anal canal relaxation percent); recto-anal inhibitory reflex (anal canal relaxation percent). RESULTS: No difference to genders: resting (LP, CP, and 3D); short squeeze (highest pressure asymmetry); endurance (CP); cough (CP, highest and lowest pressure asymmetry); push (gradient pressure); rectal sensory. Higher pressure in men: short squeeze (maximum incremental, absolute, and mean pressure, PV, lowest pressure asymmetry); long squeeze (PV); cough (anal canal and rectum maximum pressure, anal canal PV); push (anal canal and rectum maximum pressure). Anal canal relaxation was higher in women (push). CONCLUSIONS: LP reproducibility is feasible under water-perfused HRM, and comparative studies could bring similarity to dataset expansion. Novel 3D parameters need further studies with healthy and larger data to be validated and for disease comparisons. KEY POINTS: • London Protocol and Classification allied with the technological evolution of HRM (software and probes) has refined the diagnostic armamentarium in anorectal disorders. • Novel 3D and deepening the analysis of manometric parameters before the London Classification as a contributory diagnostic tool. • Comparison of healthy volunteers according to the London Protocol under a perfusional high-resolution system could establish equivalence points.