Dyssynergic Defecation: A Comprehensive Review on Diagnosis and Management

Effectiveness of Extracorporeal Magnetic Stimulation in the Treatment of Pelvic Floor Dysfunction: A Systematic Review and Meta-Analysis

OBJECTIVES

This study employs systematic review and meta-analysis methodologies to investigate the efficacy and safety of extracorporeal magnetic stimulation in treating pelvic floor dysfunction, based on published randomized clinical trials. The aim is to provide high-level evidence in evidence-based medicine for clinical decision-making and treatment interventions.

DATA SOURCES

Study were conducted to include randomized clinical trials from the inception of databases until March 2024 in four databases: PubMed, the Cochrane Library, Web of Science, and EMBASE.

REVIEW METHODS

Eligible studies were selected by two independent investigators. The risk of bias was assessed using the Cochrane Risk of Bias 2 tool. Meta-analysis was performed using the RevMan 5.3 software. The review protocol was registered on PROSPERO (CRD42024526565).

RESULTS

A systematic review incorporating 24 studies and a meta-analysis involving 14 studies demonstrated significant differences in the improvement of patients with urinary incontinence when subjected to extracorporeal magnetic stimulation compared to control groups, as evidenced by the changes in ICIQ-SF and QOL scores (Standardized Mean Difference [SMD] = -0.73, 95% Confidence Interval [CI] [-1.05, -0.41], and SMD = -0.43, 95% CI [-0.82, -0.04], respectively). However, no substantial therapeutic effects were observed in improving functional impairments among patients with overactive bladder (OAB) or chronic pelvic pain (CPP).

CONCLUSION

There is considerable evidence supporting the efficacy of magnetic stimulation for treating urinary incontinence. However, further high-quality, large sample randomized controlled trials are necessary to strengthen the evidence for its effectiveness in addressing other pelvic floor dysfunctions.

CLINICAL TRIAL REGISTRATION

This study does not involve a real-world clinical trial. The data used are from published clinical trials for secondary analysis. Therefore, clinical trial registration is not applicable. However, the review protocol was registered on PROSPERO (CRD42024526565).

The Effect of Biofeedback on Constipation, Sleep, Depression, Anxiety and Quality of Life in Patients with Dyssynergic Defecation: a QUASI Experimental Study (Before and After Study)

Dyssynergic defecation(DD) is the inability to coordinate abdominal and anorectal muscle contraction during defecation. Patients with constipation often report poor quality of life, sleep issues, and increased risk of mood disorders. Biofeedback is a recommended treatment for DD. we evaluated the effect of EMG-biofeedback on constipation symptoms as the primary outcome and also on insomnia, mood disorders (depression and anxiety), and quality of life as secondary outcomes in patients with dyssynergic defecation. Thirty-one patients with DD (74.2% women, mean age 46.23 ± 13.42 years), diagnosed using Rome IV criteria, Bristol Stool Form Scale, and anorectal manometry, were included. Patients underwent six to ten sessions of EMG-based biofeedback. We evaluated symptoms using the Wexner constipation questionnaire, Visual Analog Scale (VAS), SF-36 for quality of life, Insomnia Severity Index (ISI), and Hamilton questionnaires for anxiety and depression (HAM-A and HAM-D) before and after treatment. As consistent with study hypotheses, the Wexner scores significantly improved after biofeedback (p < 0.0001, t = 6.98). ISI scores improved (p = 0.01, t = 2.74), as did VAS scores (p < 0.0001, t = 5.14). HAM-A and HAM-D scores showed significant reductions (HAM-A: p = 0.0001, t = 5.01; HAM-D: p = 0.003, t = 2.17). However, SF-36 did not show significant improvement in quality of life (p > 0.05, t = -0.93). Biofeedback effectively improved constipation symptoms, insomnia, and mood disorders but did not impact quality of life.

Neurogastroenterology and motility disorders in patients with cirrhosis

Neurogastroenterology and motility disorders are complex gastrointestinal conditions that are prevalent worldwide, particularly affecting women and younger individuals. These conditions significantly impact the quality of life of people suffering from them. There is increasing evidence linking these disorders to cirrhosis, with a higher prevalence compared to the general population. However, the link between neurogastroenterology and motility disorders and cirrhosis remains unclear due to undefined mechanisms. In addition, managing these conditions in cirrhosis is often limited by the adverse effects of drugs commonly used for these disorders, presenting a significant clinical challenge in the routine management of patients with cirrhosis. This review delves into this connection, exploring potential pathophysiological links and clinical interventions between neurogastroenterology disorders and cirrhosis.

Frequency of detection of dyssynergic defecation in patients with overlap syndrome of functional disorders of the digestive organs associated with constipation

Introduction. The presence of dyssynergic defecation in a cohort of patients with overlap syndrome of functional disorders is poorly studied.

Aim. To assess the motor function and sensitivity parameters of the anorectal zone, to identify dyssynergic defecation and to analyze the frequency of correlation in patients with overlap syndrome of functional gastrointestinal disorders associated with constipation.

Materials and methods. A one-stage examination was conducted in four parallel groups. The study included 100 patients aged 30 to 40 years with the following diagnoses: constipation-p redominance irritable bowel syndrome (IBS-C) (group 1), IBS-C combined with functional dyspepsia (group 2), IBS-C combined with functional biliary disorder (group 3) and healthy volunteers (group 0). All patients underwent a balloon expulsion test and high-resolution anorectal manometry to determine the presence of dyssynergic defecation.

Results. Based on the analysis of parameters according to anorectal manometry data, dyssynergic defecation was not detected in group 0, in group 1 dyssynergic defecation was detected in 8 people – 32.0% (95% CI 12.3–51.6), in group 2 – in 14 people – 56.0% (95% CI 35.0–76.9), in group 3 – in 16 people – 64.0% (95% CI 43.7–84.2). A negative evacuation test was detected in 8 (32%) patients in group 1, in 14 (56%) patients in group 2, and in 17 (68%) patients in group 3, which confirmed the presence of dyssynergic defecation.

Conclusions. This study demonstrated the presence of dyssynergic defecation in three groups of subjects, more often with a combination of irritable bowel syndrome with predominant constipation with functional dyspepsia, and most often with a functional disorder of the gallbladder.

Cultural considerations in gastroenterology: barriers to care and a call for humility and action

Culture is a broadly defined term and patients' cultural identity may show up in the medical setting in visible and invisible ways. In this paper, we aim to discuss cultural considerations in gastrointestinal (GI) care. Our definition of "culture" reflects the commonly ascribed race and ethnicity and will also discuss other minority groups such as sexual and gender minorities (SGMs). We will review what is known about rates of GI conditions across various cultural groups, acknowledging that our data reflect inequity in representation. While the healthcare system has overall shown an increased awareness of the role that systemic and institutional racism plays in affecting patient care, this has not been widely studied in the context of GI though has a profound impact. Multiple factors affect the interaction between patients' cultural identities and engagement in and quality of GI care. Stigma related to cultural factors or cultural intersection has the capacity to shape if, when, and how medical care is approached, received and applied. Conditions and symptoms in GI are often complicated; health literacy (HL) is the ease with which patients can navigate getting from diagnosis to treatment and engage in self-management and also interacts with cultural context. Some aspects of a patient's experience, background and skill are imperceptible and require the healthcare provider to attend to treatment with humility, respect and self-reflection if they wish to effectively engage. We introduce the concept of cultural humility to GI and offer practical suggestions for those providing clinical care. We also call for future investment in a diverse healthcare delivery system and continued legislation to promote social equity.

A Rapid Review on the Management of Constipation for Hospice and Palliative Care Patients

Constipation is a distressing symptom that has a high prevalence in patients receiving hospice and palliative care services, particularly in cases of opioid use. A thorough assessment, root cause analysis, monitoring, and prophylactic approach are essential for symptom management and quality of life. This rapid review assessed studies published between 2018 and 2023 to identify strategies implemented by health care professionals to prevent and/or mitigate this distressing symptom. We identified 12 articles that addressed constipation in palliative and end-of-life settings and reported on the need for multifactorial management approaches with a focus on patient-centered care that includes the caregiver(s). Bedside nurses play a key role in assessing, identifying, and managing constipation. Proper documentation and communication with the interdisciplinary team help direct earlier intervention and ongoing awareness of constipation issues. Additional research is needed on specific tools and enhanced guidelines to ensure constipation is frequently addressed and preemptively managed.

Diagnostic performance of dynamic MR defecography in assessment of dyssynergic defecation

PURPOSE

To assess diagnostic performance of MR defecographic findings in diagnosis of dyssynergic defecation (DD).

METHODS

This retrospective study included 46 patients with chronic constipation who met the Rome IV criteria for diagnosis of present or absent DD and underwent MRI between Jan 2015 and June 2020. Patients were divided into DD group (n = 24) and non-DD group (n = 22). Nine parameters were analyzed by two radiologists: anorectal angle (ARA) and M line at rest, defecation, and change between 2 phases; anal canal width; prominent puborectalis muscle; abnormal evacuation. Receiver operating characteristic (ROC) curves were plotted to extract the optimal cut-offs and area under the curve (AUC). Multivariate analysis was performed.

RESULTS

Seven findings showed statistically significant difference between DD and non-DD groups. M line at defecation had highest odds ratio, followed by ARA change, ARA at defecation, M line change, prominent puborectalis muscle, abnormal evacuation and anal canal width, respectively. ARA change and prominent puborectalis muscle had highest specificity (95.5% and 100%, respectively). The optimal cut-offs of ARA at defecation, ARA change, M line at defecation, M line change and anal canal width were 122°, 1.5°, 3.25 cm, 1.9 cm and 8.5 mm, respectively. Multivariate logistic regression revealed two significant findings in differentiating between DD and non-DD, including M line at defecation (OR 23.31, 95% CI 3.10-175.32) and ARA at defecation (OR 13.63, 95% CI 1.94-95.53) with sensitivity, specificity, PPV, NPV and AUC of 79.2%, 95.5%, 95%, 80.8% and 0.87(95% CI 0.78-0.97), respectively.

CONCLUSION

MR defecography has high diagnostic performance in diagnosis of DD. Although M line and ARA at defecation are two significant findings on multivariate analysis, ARA change less than 1.5 degrees and prominent puborectalis muscle have good specificity in DD diagnosis.