Evaluation and treatment of chronic intractable rectal pain--a frustrating endeavor

Levator Ani Syndrome Presenting with Vaginal Pain

Levator ani syndrome (LAS), also known as levator ani spasm, puborectalis syndrome, chronic proctalgia, pyriformis syndrome and pelvic tension myalgia, produces chronic anal pain. The levator ani muscle is susceptible to the development of myofascial pain syndrome, and trigger points may be elicited on physical examination. The pathophysiology remains to be fully delineated. The diagnosis of LAS is suggested primarily by the clinical history, physical examination and the exclusion of organic disease that can produce recurrent or chronic proctalgia. Digital massage, sitz bath, electrogalvanic stimulation and biofeedback are the treatment modalities most frequently described in the literature. Pharmacological management includes non-steroidal anti-inflammatory medications, diazepam, amitriptyline, gabapentin and botulinum toxin. The evaluation of these patients can be challenging due to a diversity of causative factors. The authors present the case of a nulliparous woman in her mid-30s presenting with acute onset of lower abdominal and rectal pain radiating to her vagina. There was no history of trauma, inflammatory bowel disease, anal fissure or altered bowel habit. Each pain episode lasted longer than 20 min and was exacerbated by sitting. Neurological examination showed no evidence of neurological dysfunction. Rectal examination was unremarkable. During vaginal examination, palpation of the levator ani muscles elicited pain indicating pelvic floor dysfunction. Laboratory investigations including a full blood count and C reactive protein were within normal range. Further investigation with a transabdominal ultrasound scan, CT of the abdomen and pelvis and MRI of the lumbar spine were unremarkable. She commenced treatment with amitriptyline 20 mg once daily. She was referred for pelvic floor physiotherapy. Functional pain syndromes, such as LAS, should be regarded as diagnoses of exclusion and considered only after a thorough evaluation has been performed to rule out structural causes of pain. Knowledge of the pelvic floor and pelvic wall muscles may enable the physician to identify LAS, a possible cause of chronic pelvic pain.

Optimal management of functional anorectal pain: a systematic review and network meta-analysis

Functional anorectal is idiopathic and characterised by severe and potentially intractable anorectal pain. The current review aims to appraise available evidence for the management of functional anorectal pain and synthesise reported outcomes using network meta-analysis. PubMed, CENTRAL and Web of Science databases were searched for studies investigating treatments for functional anorectal pain. The primary outcome was clinical improvement of symptoms and the secondary outcome was pain scores reported during follow-up. A Bayesian network meta-analysis of interventions was performed. A total of 1538 patients were included from 27 studies. Intramuscular injection of triamcinolone, sacral neuromodulation (SNM) and biofeedback were most likely to be associated with improvement in symptoms [SUCRA (triamcinolone) = 0.79; SUCRA (SNM) = 0.74; SUCRA (Biofeedback) = 0.61]. Electrogalvanic stimulation (EGS), injection of botulinum toxin A and topical glyceryl trinitrate (GTN) were less likely to produce clinical improvement [SUCRA (EGS) = 0.53; SUCRA (Botox) = 0.30; SUCRA (GTN) = 0.27]. SNM and biofeedback were associated with the largest reductions in pain scores [mean difference, range (SNM) = 4.6-8.2; (Biofeedback) = 4.6-6]. As biofeedback is noninvasive and may address underlying pathophysiology, it is a reasonable first-line choice in patients with high resting pressures or defecation symptoms. In patients with normal resting pressures, SNM or EGS are additional options. Although SNM is more likely to produce a meaningful response compared to EGS, EGS is noninvasive and has less morbidity. Whilst triamcinolone injection is associated with symptomatic clinical improvement, the magnitude of pain reduction is less.

Advances in the therapeutic approach of pudendal neuralgia: a systematic review

CONTEXT

Although pudendal neuralgia (PN) has received growing interest over the last few years, diagnosis remains difficult, and many different therapeutic approaches can be considered.

OBJECTIVES

This article aims to provide an overview of the possible treatments of PN and investigate their efficacies.

METHODS

Utilizing PubMed and ScienceDirect databases, a systematic review was carried out and allowed identification of studies involving patients with PN, as defined by Nantes criteria, and their associated treatments. Relevant data were manually reported.

RESULTS

Twenty-eight articles were selected, totaling 1,013 patients (mean age, 49 years) and six different types of interventions. Clinical outcomes, most frequently quantified utilizing the Visual Analog Scale (VAS), vary greatly with both the therapy and time after intervention (from 100 to <10%). However, neither peri nor postoperative serious complications (grade > II of Clavien-Dindo classification) are reported. Although surgery seems to provide a higher proportion of long-term benefits, identifying the most efficient therapeutic approach is made impossible by the multitude of outcome measurements and follow-up frequencies. It should also be noted that literature is sparse regarding randomized controlled trials with long-term follow-up.

CONCLUSIONS

Although there are a number of modalities utilized for the treatment of PN, there are no current recommendations based on treatment efficacies. This seems to be largely in part caused by the lack of standardization in outcome quantification. Future research in this field should focus on prospective cohort studies with high levels of evidence, aimed at assessing the long-term, if not permanent, benefits of available therapies.

The effect of biofeedback interventions on pain, overall symptoms, quality of life and physiological parameters in patients with pelvic pain : A systematic review

Background

Biofeedback is recognized as an effective additive method for treating certain phenotypes of chronic pelvic pain syndrome and is a therapeutic option in other pelvic pain conditions. This review aims to evaluate evidence from the literature with a focus on the effect of biofeedback on pain reduction, overall symptom relief, physiological parameters and quality of life.

Methods

A systematic literature search was conducted using the databases PubMed, MEDLINE, Embase, Cochrane Library and PEDro from inception to July 2020. Data were tabulated and a narrative synthesis was carried out, since data heterogeneity did not allow a meta-analysis. The PEDro scale and the McMaster Critical Review Form—Quantitative Studies were applied to assess risk of bias.

Results

Out of 651 studies, 37 quantitative studies of primary research evaluating pelvic pain conditions in male and female adults and children were included. They covered biofeedback interventions on anorectal disorders, chronic prostatitis, female chronic pelvic pain conditions, urologic phenotypes in children and adults and a single study on low back pain. For anorectal disorders, several landmark studies demonstrate the efficacy of biofeedback. For other subtypes of chronic pelvic pain conditions there is tentative evidence that biofeedback-assisted training has a positive effect on pain reduction, overall symptoms relief and quality of life. Certain factors have been identified that might be relevant in improving treatment success.

Conclusions

For certain indications, biofeedback has been confirmed to be an effective treatment. For other phenotypes, promising findings should be further investigated in robust and well-designed randomized controlled trials.

Proctalgia Syndromes: Update in Diagnosis and Management

PURPOSE OF REVIEW

Functional anorectal pain syndromes are a neglected yet often disabling clinical entity resulting in significant economic and psychological burden to the patient. The aim of this review is to update the practicing gastroenterologist/coloproctologist on the diagnosis and management of these complicated disorders.

RECENT FINDINGS

The updated Rome foundation diagnostic criteria (Rome IV) for functional anorectal pain subgroups chronic proctalgia (levator ani syndrome and unspecified functional anorectal pain) and acute proctalgia (proctalgia fugax) on the basis of symptom duration and digital rectal examination findings. Chronic proctalgia is thought to be secondary to paradoxical pelvic floor contraction in many patients and biofeedback to improve the defecation effort has proven effective for over 90% in the short term. Unfortunately, management of proctalgia fugax remains challenging and treatment outcomes modest at best. A number of therapies to relax the pelvic floor may be employed to improve symptoms in functional anorectal pain syndromes; however, only biofeedback to improve defaecatory dynamics in patients with levator ani syndrome has proven effectiveness in a randomized setting. Further investigation of treatment approaches in proctalgia fugax is required.

Botulinum toxin A versus electrogalvanic stimulation for levator ani syndrome: is one a more effective therapy?

BACKGROUND

Levator ani syndrome (LAS) is a functional disorder that can be a challenge to treat. LAS that is refractory to medical management may be treated with electrogalvanic stimulation (EGS) or Botulinum toxin A (BTX) injection. The aim of the present study was to evaluate the outcomes associated with both EGS and BTX in patients with medically refectory LAS to determine if either demonstrate a long-term benefit or whether one treatment is better than the other.

METHODS

A retrospective study was performed on consecutive patients with LAS treated with BTX or EGS at our institute. Patients were identified from a prospectively maintained database. The study time frame was 6 years.

RESULTS

One hundred and twenty patients [80 females, mean age 52 years (range 21-84, SD 15.8)] were treated for medically refractory LAS: 102 with BTX and 18 with EGS. With EGS, 28.6% of patients reported a complete response, 14.3% reported a partial response and 57.1% reported no response to treatment. With BTX, 35.5% of patients reported a complete response, 19.7% reported a partial response and 44.7% reported no response to treatment. There was no difference between BTX and EGS with regard to treatment response. Patients who had BTX were more likely to report a short-term benefit in treatment when compared to those patients who had EGS (p = 0.002). This difference between reported outcome to BTX and EGS treatments did not sustain in the long term (p = 0.2).

CONCLUSIONS

Both BTX and EGS are to some extent effective at resolving symptoms of LAS. In the short term, BTX appears to be more effective. Neither treatment sustains its benefit in the long term.

Successful Treatment of Paradoxical Puborectalis Contraction and Intractable Anorectal Pain With Sacral Neuromodulation

BACKGROUND

Paradoxical puborectalis contraction (PPC) is a syndrome of obstructed defecation associated with a cluster of complaints including rectal pain, incomplete evacuatory sensation, prolonged repetitive straining with bowel movements, and the need for digital manipulation. Traditional treatment has yielded mixed results.

CASE

We present a case of PPC successfully treated with staged sacral neuromodulation and review her diagnostic features, medical regimen, and prior unsuccessful interventions tried. Symptoms were analyzed using a visual analog scale pain score (0-10). Criteria to progress to implantation of the pulse generator included a pain score less than 3 during test stimulation and/or greater than 50% decrease in the pain score compared to baseline.Our patient had a pain score of 0 (baseline 8) with stage 1 sacral neuromodulation. In addition, she had dramatic relief in her straining with bowel movements and need for digital manipulation. Her pulse generator was implanted after a 2-week trial, and she has experienced a lasting improvement at her follow-up of 2 years.

CONCLUSIONS

Sacral neuromodulation is an established therapy for overactive bladder syndrome, urinary retention, and fecal incontinence. In urology, the use of sacral neuromodulation has been described to benefit some patients with pelvic floor pain. Sacral neuromodulation can be a successful treatment for PPC and functional anorectal pain with resulting improvement in quality of life without the sequelae of an invasive and irreversible surgery.

Prospective Outcomes of a Pelvic Floor Rehabilitation Program Including Vaginal Electrogalvanic Stimulation for Urinary, Defecatory, and Pelvic Pain Symptoms

OBJECTIVES

This study evaluated our experience after implementing a pelvic floor rehabilitation program including behavioral modification, biofeedback, and vaginal electrogalvanic stimulation (EGS).

METHODS

This prospective cohort study evaluated outcomes of patients with pelvic floor dysfunction (urinary or defecatory dysfunction, pelvic pain/dyspareunia) who underwent pelvic floor rehabilitation. Patients received 4 to 7 sessions (1 every 2 weeks) including biofeedback and concluded with 30 minutes of vaginal EGS. Surveys assessed subjective changes in symptoms; success was evaluated using a 10-point visual analog scale (VAS) at the final session (10 = most successful). Paired comparisons of responses at baseline and final treatment were evaluated.

RESULTS

Ninety-four patients were followed up through therapy completion. Treatment indications included urinary (89.4%), defecatory (33.0%), and pelvic pain or dyspareunia (30.9%); 44.7% of patients had a combination of indications. Among women with urinary symptoms, the percentage reporting leakage decreased from 92.9% to 79.3% (P = 0.001), leakage at least daily decreased from 69.0% to 39.5% (P < 0.001), daily urgency with leakage decreased from 42.7% to 19.5% (P = 0.001), daily urgency without leakage decreased from 41.5% to 18.3% (P < 0.001), and median VAS rating (0 = not at all, 10 = a great deal) of daily life interference decreased from 5 to 1.5 (P < 0.001). The median success ratings were 8, 8, and 7 for treatment of urinary symptoms, pelvic pain/dyspareunia, and bowel symptoms, respectively.

CONCLUSIONS

An aggressive pelvic rehabilitation program including biofeedback with vaginal EGS had a high rate of self-reported subjective success and satisfaction and should be considered a nonsurgical treatment option in patients with pelvic floor dysfunction.

The Clinical Characteristics of Patients with Chronic Idiopathic Anal Pain

The aim of this study was to investigate the clinical characteristics, treatment outcomes and psychological distress in patients with chronic idiopathic anal pain. The study was conducted on patients referred to Hangzhou Third Hospital for chronic anal pain from January, 2010 to December, 2014. Patient demographics, clinical history, anorectal physiology, and radiological imaging data were recorded for all patients. The treatment outcome was noted for patients treated and followed up for more than 6 month at the present unit. Ninety-six patients with mean age of 45.1 years (range, 17-82) were studied. Seventy-one patients (74.0%) had functional anorectal pain(FARP). The main complaints were dull, sharp, stabbing, or spasm pain. Among all patients, 34.3% reported that their pain radiated into other locations. Fifty-one patients (53.1%) had bowel dysfunction, while 28.1% patients had urinary dysfunction. The common factors associated with pain relief were day time, lying down and warm water baths; the factors that contributed to aggravated pain were night time, defecation or sitting. 92.7% (89/96) of patients reported symptoms of psychological disturbance. FARP patients exhibited increased depression than non-FARP patients(P<0.05). In addition, female patients were more likely to have depression than male patients (P<0.05). The overall pain treatment success rate was 55.2% (53/96). The pain treatment outcome was better in non-FARP patients than in FARP patients(χ2=3.85, P<0.05). Conclusively, chronic idiopathic anal pain is a complex clinical symptom, involving pelvic floor muscles, the nervous system, endocrine system, and the patients' psychological conditions. Further research is needed to improve diagnosis and treatment for patients with chronic idiopathic anal pain.

Treatment of chronic anorectal pain by acupuncture

Chronic anorectal pain is a common functional anorectal disease. Currently, there are still some difficulties in diagnosing and treating this disease. Acupuncture has advantages in treating chronic anorectal pain. This article will summarize the progress in treatment of chronic anorectal pain by acupuncture.

Chronic proctalgia and chronic pelvic pain syndromes: New etiologic insights and treatment options

This systematic review addresses the pathophysiology, diagnostic evaluation, and treatment of several chronic pain syndromes affecting the pelvic organs: chronic proctalgia, coccygodynia, pudendal neuralgia, and chronic pelvic pain. Chronic or recurrent pain in the anal canal, rectum, or other pelvic organs occurs in 7% to 24% of the population and is associated with impaired quality of life and high health care costs. However, these pain syndromes are poorly understood, with little research evidence available to guide their diagnosis and treatment. This situation appears to be changing: A recently published large randomized, controlled trial by our group comparing biofeedback, electrogalvanic stimulation, and massage for the treatment of chronic proctalgia has shown success rates of 85% for biofeedback when patients are selected based on physical examination evidence of tenderness in response to traction on the levator ani muscle-a physical sign suggestive of striated muscle tension. Excessive tension (spasm) in the striated muscles of the pelvic floor appears to be common to most of the pelvic pain syndromes. This suggests the possibility that similar approaches to diagnostic assessment and treatment may improve outcomes in other pelvic pain disorders.

What causes chronic idiopathic perineal pain?

AIM

Chronic idiopathic perineal pain is poorly understood. Underlying structural abnormalities have been clinically suspected but rarely demonstrated objectively. The condition has been frequently considered to be a psychological disorder. We aimed to evaluate how commonly a structural explanation for such pain symptoms is present.

METHOD

Patients seen in a pelvic floor clinic with severe chronic functional anorectal pain that was classified as chronic idiopathic perineal pain (study group) were prospectively registered in a pelvic floor database and underwent pelvic floor work up (defaecating proctography, anorectal physiology and anal ultrasound +/- rectal examination under anaesthetic). A control group was formed by patients with obstructed defaecation, with or without faecal incontinence, with advanced posterior compartment prolapse.

RESULTS

Of 59 patients with chronic idiopathic perineal pain [80% women; mean age 53 (range, 22-84) years], representing 5% of all pelvic floor presentations, 33 (56%) had chronic idiopathic perineal pain alone and 26 (44%) had chronic idiopathic perineal pain with obstructed defaecation. Thirty-five (59%) had an underlying high-grade internal rectal prolapse (73% with chronic idiopathic perineal pain + obstructed defaecation vs 48% with chronic idiopathic perineal pain alone; P < 0.05). Anorectal pain was present in 50% of 543 controls with advanced posterior compartment prolapse.

CONCLUSION

High-grade internal rectal prolapse commonly underlies chronic idiopathic perineal pain, particularly when obstructed defaecation is present. Chronic anorectal pain is a common, under-recognized subsidiary symptom in patients with advanced posterior compartment prolapse presenting primarily with obstructed defaecation or faecal incontinence.

Chronic perineal pain: current pathophysiological aspects, diagnostic approaches and treatment

Chronic perineal pain is the anorectal and perineal pain without underlying organic disease, anorectal or endopelvic, which has been excluded by careful physical examination, radiological and endoscopic investigations. A variety of neuromuscular disorders of the pelvic floor lead to the different pathological conditions such as anorectal incontinence, urinary incontinence and constipation of obstructed defecation, sexual dysfunction and pain syndromes. The most common functional disorders of the pelvic floor muscles, accompanied by perineal pain are levator ani syndrome, proctalgia fugax, myofascial syndrome and coccygodynia. In the diagnosis of these syndromes, contributing to a thorough history, physical examination, selected specialized investigations and the exclusion of organic disease with proctalgia is carried out. Accurate diagnosis of the syndromes helps in choosing an appropriate treatment and in avoiding unnecessary and ineffective surgical procedures, which often are performed in an attempt to alleviate the patient's symptoms.

[Symptomatic approach to musculoskeletal dysfunction and chronic pelvic and perineal pain]

INTRODUCTION

Clinical examination of a patient with chronic pelvic and perineal pain often demonstrates muscle hypertonia or muscle contracture sometimes associated with local tenderness or real muscle trigger points. It is sometimes very difficult to determine whether this muscle pain detected on clinical examination is the cause or a consequence of the pain. The purpose of this article is to review musculoskeletal dysfunction in the context of chronic pelvic and perineal pain.

MATERIAL AND METHODS

Review of the literature devoted to musculoskeletal aspects of pelvic and perineal pain.

RESULTS

Definitions of pelvic floor dysfunction, hyperactive pelvic floor, myofascial pain and muscle trigger points, and the concept of fibromyalgia.

CONCLUSION

Musculoskeletal pain is certainly underestimated in the management of chronic pelvic and perineal pain. The pathophysiology of musculoskeletal pain involves disorders of the lumbar, pelvic and femoral equilibrium, myofascial pain characterized by the presence of trigger points for which the pathophysiology remains controversial: a purely muscle disease, reaction to adjacent inflammatory reactions causing hypersensitization, or simply a sign of central hypersensitization in a context of chronic pain syndrome.

Biofeedback is superior to electrogalvanic stimulation and massage for treatment of levator ani syndrome

BACKGROUND & AIMS

Levator ani syndrome (LAS) might be treated using biofeedback to teach pelvic floor relaxation, electrogalvanic stimulation (EGS), or massage of levator muscles. We performed a prospective, randomized controlled trial to compare the effectiveness of these techniques and assess physiologic mechanisms for treatment.

METHODS

Inclusion criteria were Rome II symptoms plus weekly pain. Patients were categorized as "highly likely" to have LAS if they reported tenderness with traction on the levator muscles or as "possible" LAS if they did not. All 157 patients received 9 sessions including psychologic counseling plus biofeedback, EGS, or massage. Outcomes were reassessed at 1, 3, 6, and 12 months.

RESULTS

Among patients with "highly likely" LAS, adequate relief was reported by 87% for biofeedback, 45% for EGS, and 22% for massage. Pain days per month decreased from 14.7 at baseline to 3.3 after biofeedback, 8.9 after EGS, and 13.3 after massage. Pain intensity decreased from 6.8 (0-10 scale) at baseline to 1.8 after biofeedback, 4.7 after EGS, and 6.0 after massage. Improvements were maintained for 12 months. Patients with only a "possible" diagnosis of LAS did not benefit from any treatment. Biofeedback and EGS improved LAS by increasing the ability to relax pelvic floor muscles and evacuate a water-filled balloon and by reducing the urge and pain thresholds.

CONCLUSIONS

Biofeedback is the most effective of these treatments, and EGS is somewhat effective. Only patients with tenderness on rectal examination benefit. The pathophysiology of LAS is similar to that of dyssynergic defecation.

Sacral nerve stimulation for treatment of chronic intractable anorectal pain -a case report-

Despite recent methodological advancement of the practical pain medicine, many cases of the chronic anorectal pain have been intractable. A 54-year-old female patient who had a month history of a constant severe anorectal pain was referred to our clinic for further management. No organic or functional pathology was found. In spite of several modalities of management, such as medications and nerve blocks had been applied, the efficacy of such treatments was not long-lasting. Eventually, she underwent temporary then subsequent permanent sacral nerve stimulation. Her sequential numerical rating scale for pain and pain disability index were markedly improved. We report a successful management of the chronic intractable anorectal pain via permanent sacral nerve stimulation. But further controlled studies may be needed.

Is sacral nerve stimulation an effective treatment for chronic idiopathic anal pain?

BACKGROUND

Chronic idiopathic anal pain is a common, benign symptom, the etiology of which remains unclear. Traditional treatments are often ineffective. This study investigated the efficacy of sacral nerve stimulation in treating chronic idiopathic anal pain.

METHODS

Twelve patients (10 women and 2 men; mean age, 61.0 +/- 10.3 years; range, 48-82 years) implanted with a permanent device for sacral nerve stimulation were followed in the Italian Group for Sacral Neuromodulation (GINS) Registry. All patients had frequent chronic anal or perianal pain; 75 percent had previously undergone pelvic surgery. Pharmacologic and rehabilitative therapy had yielded poor results. Changes from baseline to last follow-up examination were evaluated for scores on a visual analog pain scale (0-10) and the Short-Form 36 (SF-36) health status questionnaire. Manometric measurements recorded at last follow-up were compared with preimplantation values.

RESULTS

In one patient, the permanent device was removed because of technical failure. After a mean follow-up of 15 (range, 3-80) months, visual analog pain scores had significantly improved (from 8.2 +/- 1.7 to 2.2 +/- 1.3, P < 0.001). SF-36 physical component scores increased from 26.27 +/- 5.65 to 38.95 +/- 9.08, P < 0.02). Scores on the mental component showed improvement, although not significant. Postimplantation changes in manometric functional data were not significant, but sensitivity thresholds showed a considerable decrease.

CONCLUSIONS

Long-term follow-up data showing improvements in scores on the visual analog pain scale and quality of life questionnaire indicate that, before adopting more aggressive surgical procedures, SNS should be considered for patients with chronic idiopathic anal pain in whom pharmacologic and biofeedback treatments have failed to produce effective results.

Functional and chronic anorectal and pelvic pain disorders

Several organic and functional disorders of the urinary bladder, reproductive tract, anorectum, and the pelvic floor musculature cause pelvic pain. This article describes functional disorders in which chronic pelvic and anorectal pain cannot be explained by a structural or other specified pathology. Currently, these functional disorders are classified into urogynecologic conditions or cystitis and painful bladder syndrome, anorectal disorders, and the levator ani syndrome. Although nomenclature suggests that these conditions are distinct, there is considerable overlap of their symptoms and these disorders have much in common.

The role of biofeedback in the treatment of gastrointestinal disorders

Biofeedback is a form of treatment that has no adverse effects and can be provided by physician extenders. The therapy relies on patients' ability to learn how to influence their bodily functions through dedicated machinery and teaching. This Review provides a comprehensive overview of all potential therapeutic applications of biofeedback for functional constipation, fecal incontinence, functional anorectal pain, IBS, functional dyspepsia, and aerophagia. Practical clinical applications of biofeedback therapy supported by randomized, controlled trials (RCTs) are limited to fecal incontinence and dyssynergic defecation. For fecal incontinence, RCTs suggest that biofeedback combining strength training and sensory discrimination training is effective in approximately 75% of patients and is more effective than placebo. However, verbal feedback provided by a therapist during extended digital examination may be equally effective, and children whose fecal incontinence is associated with constipation plus fecal impaction do no better with biofeedback than medical management. For dyssynergic defecation, RCTs show that biofeedback combining pelvic floor muscle relaxation training, practice in defecating a water-filled balloon, and instruction in effective straining is effective in approximately 70% of patients who have failed to respond to laxative treatment. For both incontinence and dyssynergic defecation, the benefits of biofeedback last at least 12 months.

Anorectal motor disorders

Anorectal motor disorders such as faecal incontinence, chronic anorectal pain and solitary rectal ulcer syndrome are common in the community. They cause psychological distress, affect quality of life, and pose a significant economic burden. In recent years, many strides have been made in the diagnostic criteria and in the mechanistic understanding of anorectal disorders. The use of innovative manometric, neurophysiological and radiological techniques have shed new light on the underlying pathophysiology. Also, it has been recognised that psychological dysfunction play an important role. However, there is a lack of consensus regarding what is abnormal, regarding the overlap between phenotypes and regarding optimal diagnostic approaches or tests. There has been little advance in drug therapy for these conditions. Although several treatments have been tried and appear promising, controlled trials are either lacking or have provided insignificant evidence. There is a need for improved medical, behavioural and surgical treatments for these conditions.

Permanent sacral nerve stimulation for treatment of functional anorectal pain: report of a case

PURPOSE

Patients with functional anorectal pain in the absence of an organic cause often have symptoms that are resistant to conventional medical and behavioral therapy. This study assessed the use of sacral nerve stimulation in the treatment of this condition.

METHODS

A 56-year-old, female subject with an 18-month history of intermittent severe anorectal pain, in the absence of any evacuatory disorder or gross pathology, underwent temporary then subsequent permanent sacral nerve stimulation. Treatment efficacy was measured by verbal pain scores obtained at baseline, during screening, after screening, and subsequent follow-up.

RESULTS

Temporary sacral nerve stimulation of the left S3 root (3-5 V; 14 Hz; 210 microsec) resulted in total alleviation of the patient's symptoms. A verbal pain score of 10/10 preoperatively was reduced to 0/10 with no adverse effects from stimulation. On completing the trial evaluation, the symptoms of pain returned with a verbal pain score of 10/10. A permanent pulse generator was implanted with a Medtronic 3093 quadripolar electrode lead, placed in the left S3 foramen. Results of chronic stimulation showed that pain symptoms were again abolished with no recurrence of symptoms seen at one-year follow-up (1.3 V; 14 Hz; 210 microsec).

CONCLUSIONS

Sacral nerve stimulation may be of benefit in the treatment of functional anorectal pain resistant to conventional treatments. The mechanism of action is not known. Further prospective evaluation of a series of patients is required using pain scoring, quality of life, and psychologic assessment to aid selection.

Levator ani trigger point injections: An underutilized treatment for chronic pelvic pain

AIMS

We conducted this study to examine the role of trigger point injections in females with chronic pelvic pain (CPP) of at least 6 months duration and specific levator ani trigger points.

METHODS

This prospective study included 18 consecutive female patients with CPP and specific palpable levator ani trigger points. Pain was evaluated before and after trigger point injection on a Visual Analog Scale (VAS). Patient global satisfaction (PGS) and cure rates (PGC) were also measured by a VAS on a scale of 0-100%. The trigger points were identified manually by intravaginal palpation of the levator ani bilaterally. A mixture of 10 cc of 0.25% bupivacaine, 10 cc of 2% lidocaine and 1 cc (40 mg) of triamcinolone was used for injection of 5 cc per trigger point. A 5.5'' Iowa trumpet pudendal needle guide was used for injection. All but one injection were performed in the office setting without sedation. Pelvic floor muscle exercises were taught for use after injection. Success was defined as a decrease in pain as measured by a VAS of 50% or more, as well as PGS and PGC scores of 60% or greater. There was a mean follow up of 3 months after trigger point injection.

RESULTS

Thirteen of 18 women improved with the first trigger point injection resulting in a comprehensive success rate of 72%. Six (33%) of 18 women were completely pain free.

CONCLUSION

In the management of CPP, a non-surgical office-based therapy such as trigger point injections can be effective in selected patients.

Diagnosis of anal sphincter tears to prevent fecal incontinence: a randomized controlled trial

OBJECTIVE

Maternal anal sphincter tears after vaginal delivery are frequently not diagnosed clinically and are associated with subsequent fecal incontinence. This study examined whether diagnosis of these tears by ultrasonography, followed by immediate surgical repair, reduces the occurrence of incontinence.

METHODS

We conducted a randomized trial involving 752 primiparous women without a clinically evident anal sphincter tear to evaluate the benefit of adding endoanal ultrasonography immediately after vaginal delivery to the standard clinical examination of the perineum. When a sphincter tear was diagnosed, the perineum was surgically explored and the sphincter sutured. The main outcome evaluated was fecal incontinence 3 months postpartum graded by the Wexner incontinence scale, which measures incontinence to flatus and liquid or solid stools, need to wear a pad, and lifestyle alterations.

RESULTS

Among women assessed by ultrasonography, 5.6% had a sphincter tear. Severe incontinence was reported 3 months after childbirth by 3.3% of women in the intervention group compared with 8.7% in the control group (risk difference -5.4%; 95% confidence interval -8.9 to -2.0; P = .002). The benefit of the intervention persisted 1 year after delivery, with 3.2% severe incontinence in the intervention group compared with 6.7% in the control group (risk difference -3.5%; 95% confidence interval -6.8% to -0.3%; P = .03). Ultrasonography needs to be performed in 29 women to prevent 1 case of severe fecal incontinence.

CONCLUSION

Ultrasound examination of the perineum after childbirth improves the diagnosis of anal sphincter tears, and their immediate repair decreases the risk of severe fecal incontinence.

LEVEL OF EVIDENCE

I.

Comparison study between electrogalvanic stimulation and local injection therapy in levator ani syndrome

BACKGROUND AND AIMS

Two theories have been reported for the pathophysiology of levator ani syndrome: the spastic cycle hypothesis and the local inflammation (Tendinitis) hypothesis. This study compared two treatment modalities in order to determine which of the two hypotheses is more appropriate.

SUBJECTS AND METHODS

In this prospective study, Group EGS (n=22) underwent electrogalvanic stimulation twice a week. Group LI (n=31) underwent a local injection of a 40-mg triamcinolone acetonide mix with 1 ml 2% lidocaine into the maximal tender point of the arcus tendon in the levator ani muscle.

RESULTS

The most common location of tenderness was the left anterior of the arcus tendon of the levator ani muscle. At the last follow-up (12 months), the LI group showed more relief, more improvement, and fewer failures than the EGS group. No difference was seen between the mean pain scores (verbal analog scale: 0-100) of the two groups at either the 1-week or the 12-month follow-up. However, the LI group showed better results at the 1-month, 3-month, and 6-month follow-ups.

CONCLUSION

The LI group showed better short-term results than the EGS group. Therefore, the tendinitis hypothesis seems to be the more reliable one for levator ani syndrome. However, because the subjective responses of the patients indicated that a sufficient level of patient satisfaction had not been achieved, we cannot positively conclude that the tendinitis hypothesis is the more reliable one for the pathophysiology of levator ani syndrome.

Le neurochirurgien face aux algies périnéales

The investigation of patients suffering from perineal pain when sitting led us to perform an anatomical study of the pudendal nerve. We dissected 50 cadavers and found areas of conflict for the nerve fibers. The nerve trunk can become entrapped at the level of the ischiatic spine, in the Alcock's canal and when it crosses the falciform process. Considering the clinical and neurophysiological data, this type of chronic pain may arise from compression of the nerve between the sacro-tuberal and the sacro-spinal ligaments, and/or in the fascia of the internal obturator muscle. Much like treatment of entrapment of the median nerve in the wrist, we decided to treat chronic perineal pain by nerve blocks, and later by surgery. We describe here the clinical symptoms, the neurophysiological data, and the technique of the nerve blocks. For patients with persistent pain, we propose a posterior surgical approach which has provided successful pain relief in two third of patients.

Douleurs anopérinéales chroniques, diagnostic et stratégie d’exploration

Chronic anoperineal pain may result from diverse causes; a precise and painstaking diagnostic approach is necessary to avoid inappropriate treatments which may aggravate the situation. Advances in imaging and neurophysiologic testing have improved the ability to diagnose and differentiate coccydynia, pudendal neuralgia, and the pyriformis muscle syndrome. Other etiologies including anismus, the descending perineum syndrome, and the levator ani syndrome are discussed as well as psychologic ans somatic interactions.

Review article: the management of pelvic floor disorders

Anorectal disorders, such as faecal incontinence, defecation difficulty and conditions associated with anorectal pain, are commonly encountered in the practices of gastroenterologists, urogynaecologists and colorectal surgeons. The evaluation of these disorders has been very much improved by the development and wider availability of diagnostic tests, such as manometry, endo-anal ultrasound, static and dynamic pelvic magnetic resonance imaging and electromyography. After briefly reviewing the normal anatomy and physiology of the anorectum, the pathophysiology and diagnostic approaches to faecal incontinence, defecation disorders and functional anorectal pain are discussed. Until recently, the management of these disorders has been largely anecdotal. However, our therapeutic armamentarium has been expanded by pharmacological agents, such as nitrates, calcium channel blockers and botulinum toxin, as well as the development of novel techniques, such as sacral nerve stimulation. These and other pharmacological, behavioural and surgical approaches are reviewed with respect to the robustness of evidence to support their efficacy in patients with these disorders.

Adolescent pelvic pain

Chronic pelvic pain is a frequent complaint in adolescent females. It is a complex disorder with multiple causes. The assessment must attempt to differentiate between gynaecological and non-gynaecological sources of pain. An understanding of the physical, cognitive and environmental factors associated with the pain are essential. Laparoscopy has been used in the assessment of CPP but a significant number of patients will have no obvious aetiology at the time of laparoscopy. For the young patient with CPP, a multidisciplinary approach may be essential to facilitate diagnosis and management. Although the symptoms may not always be curable, management that allows the young female to obtain normal or near normal function may be possible. This chapter focuses on the various causes of pelvic pain in the adolescent female with a focus on the assessment, diagnosis and treatment of the different causes.

Diagnosing the prostatitis patient: the dilemma continues

National Institutes of Health Category III prostatitis/chronic pelvic pain syndrome continues to pose a diagnostic and treatment challenge to most urologists. While this form of so-called prostatitis is the most prevalent and frustrating, little progress has been made in proving an etiology and consequently, in finding an effective remedy. The diagnostic dilemma is illustrated by the conflicting data employed to describe prostatitis. What is prostatitis? Is it a malady of the prostate gland itself? Is it a form of voiding dysfunction? Is it a myofascial pain syndrome? Or, is prostatitis urology's brand of functional somatic syndrome? It is time we address the dilemma by looking beyond the prostate gland and toward a multidisciplinary perspective.

Current management of interstitial cystitis

The management of patients with IC remains a challenge because no single agent has proven universally effective. DMSO and PPS have been evaluated through early placebo-controlled trials, and these two agents are FDA approved treatments for IC. BCG is currently undergoing a large placebo-controlled trial, and hyaluronic acid is receiving similar clinical evaluation. Sacral nerve root stimulation shows promise with early favorable results. As with any treatment algorithm, it is reasonable to begin with conservative treatment using time-dependent milestones, allowing adequate trials of successive therapy while ensuring an appropriate pace for timely symptom resolution.

Anorectal and pelvic pain in women: diagnostic considerations and treatment

Functional anorectal and pelvic pain disorders may cause considerable morbidity and frustration in many women. This article reviews current concepts of these often poorly understood disorders and provides suggestions for evaluating and managing women who may come to the attention of the practicing gastroenterologist.

Functional anorectal and pelvic pain

Functional anorectal and pelvic pain syndromes represent a diverse group of disorders that affect the quality of life and about which many physicians possess little understanding. Nongynecologic causes include levator ani syndrome, proctalgia fugax, and coccygodnia, which can often be distinguished by careful history and physical examination. In women, chronic pelvic pain may arise from the uterus, cervix, ovaries, or from endometriosis and pelvic adhesions. This article reviews these diverse disorders and the approach to diagnosis and management.

Transanally injected triamcinolone acetonide in levator syndrome

PURPOSE

Several treatments are used for the treatment of levator syndrome, such as rectal massage, biofeedback, and galvanic stimulation. But their effects are inconsistent, and multiple treatment sessions are usually required. Triamcinolone acetonide and lidocaine mixture was injected locally into the tenderest point in levator syndrome under the hypothesis that levator syndrome is caused by tendinitis of pelvic floor musculature.

METHODS

A mixture of 40 mg of triamcinolone acetonide and 1 ml of 2 percent lidocaine was injected into the tenderest point transanally in 104 patients (33 males; mean age, 51 years) with levator syndrome from December 1996 to May 1998 at Daehang Clinic. Additional injections were repeated at two-week intervals to a maximum of three injections in cases of poor response. Follow-up was performed prospectively concerning patient's perception of pain level using a visual analog scale. Depending on the response, the patients were classified into four groups: pain-free, good, fair, and no response. More than 50 percent pain reduction was classified as "good," and less than 49 percent reduction as "fair."

RESULTS

The injection regions, where the tenderest points were identified on digital rectal compression, were left anterior anal canal in 71.2 percent of patients, right anterior in 3.8 percent of patients, and posterior in 25 percent of patients. The results of treatment were as follows: at three months after injection, response was classified as pain-free in 36.8 percent of patients, good in 35 percent of patients, fair in 19.5 percent of patients, and no response in 8.7 percent of patients; at six months the response was pain-free in 30.1 percent of patients, good in 46.5 percent of patients, fair in 18.2 percent of patients, and no response in 5.2 percent of patients. Most patients, except 8.7 percent at three months and 5.2 percent at six months, experienced treatment benefits. There were no complications during the follow-up periods.

CONCLUSION

Transanal injection of triamcinolone acetonide and lidocaine mixture into the tenderest point is such a simple, safe, and very effective modality that it can be recommended as a primary therapy for levator syndrome.

Pelvic floor physical therapy for patients with prostatitis

The most common form of prostatitis is National Institutes of Health category III, also known as chronic abacterial prostatitis/chronic pelvic pain syndrome. The search for effective and durable therapy for this condition remains frustrating for both patients and physicians. A new approach incorporating a neurobahavioral and musculoskeletal perspective is emerging as a means of diagnosing and treating affected patients. Adopting methods from gynecology, colorectal surgery, and physical therapy has had promising effects in men diagnosed with chronic prostatitis.

Psychologic aspects in proctalgia

PURPOSE

One of the main problems in coloproctology is chronic idiopathic anal pain. The aim of this study was to investigate the psychosomatic components of proctalgia to identify which, if any, component is associated with this pain and to what extent.

METHODS

Twenty patients with proctalgia were observed (mean age, 46 years). Psychologic consultations were required by the surgeons, because of persistent symptoms, to allow a better understanding of the problem and a more integrated therapy. The psychologic investigation consisted of three interviews and administration of the following tests: Institute for Personality and Ability Testing Anxiety Scale Questionnaire (1-10), Rorschach test (Klopfer and Davidson method), and Draw-A-Person test by Karen Machover. This sample was compared with a control group composed of 40 healthy subjects, homogeneous in age, social and working conditions, and investigation procedures.

RESULTS

Patients showed depression and anxiety according to standard validated questions (Institute for Personality and Ability Testing Anxiety Scale Questionnaire) and personality disorders; they had a strong tendency to use primitive defense mechanisms and showed a lack of personality formation.

CONCLUSIONS

Psychologic investigation allows a progressive clarification of all the components of anal pain. This might be useful not only for research purposes but also for a more effective approach to these patients.

Results of pudendal nerve neurolysis-transposition in twelve patients suffering from pudendal neuralgia

PURPOSE

Pudendal neuralgia caused by nerve compression may be improved by surgical decompression of the pudendal nerve. This study was undertaken to determine if clinical symptoms, electrophysiological investigations, and the efficacy of preoperative pudendal nerve blocks could be used to predict the efficacy of surgery.

METHODS

Twelve consecutive patients complaining of anal pain, genital pain, or both, exacerbated in the sitting position and unsuccessfully treated by analgesic drugs before referral were studied. In these 12 patients decompression of the pudendal nerve was performed after unsuccessful CT-guided injection of corticosteroids in the pudendal nerve at the ischial spine or after pain relapse following successful injections. Nineteen nerves were decompressed by surgery, and the compressed area was located between the sacrospinal and sacrotuberal ligaments for 18 nerves.

RESULTS

Three months after surgery, four patients were totally relieved, and three were only partially improved. After 21 months of follow-up, three patients were cured, one was slightly improved, and eight remained in pain. In the three patients cured by surgery, pain completely disappeared for at least two weeks after a nerve block repeated twice before surgery, whereas pain relief was observed in only one of the nine other patients (P = 0.018). None of the three patients cured by surgery were being treated for depression, whereas six of the nine remaining patients were receiving antidepressants or were followed by a psychiatrist (P = 0.09). Results of surgery did not depend on other preoperative clinical or electrophysiological data.

CONCLUSIONS

This preliminary study suggests that complete disappearance of pain for at least two weeks after a nerve block repeated twice before surgery may be the best criterion to predict success. Based on this criterion, surgery would have been performed in four patients in this study, of whom three would have been cured.

Treatment of proctalgia fugax with topical nitroglycerin: report of a case

PURPOSE

We report a single case of proctalgia fugax that responded to 0.3 percent nitroglycerin ointment.

METHODS

Case report.

RESULTS

A single case of proctalgia fugax responded to topical application of 0.3 percent nitro glycerin ointment with no significant side effects.

CONCLUSIONS

Nitroglycerin ointment is a newly described treatment for several painful anal conditions. We describe a single case of levator spasm or proctalgia fugax responding to topical application of nitroglycerin. This is only a single case report, and conclusive evidence awaits completion of a controlled clinical trial.

Biofeedback for intractable rectal pain: outcome and predictors of success

PURPOSE

A number of modalities have been used for the treatment of intractable rectal pain, with varying degrees of success. Electromyography (EMG)-based biofeedback therapy has been used in the treatment of this condition during the past six years.

MATERIALS AND METHODS

Medical records of 86 patients who completed at least one session of biofeedback for rectal pain between February 1989 and August 1995 were retrospectively reviewed. All sessions were one-hour outpatient encounters with a trained biofeedback therapist. There were 31 male and 55 female patients with a median age of 68 (range, 12-96) years. Surgery (19.8 percent) or stress (15.1 percent) were frequently cited as precipitating factors for the development of rectal pain. Eleven patients completed only one session of biofeedback and were excluded from further analysis. Of the remaining patients, 28 complained of concomitant constipation. Assessment of the benefit of therapy was based on the patients' subjective reports of the level of symptoms, aided by a linear analog scale.

RESULTS

Twenty six patients (34.7 percent) reported an improvement in symptoms. Outcome was not influenced by patients' ages (P = 0.63), duration of symptoms (P = 1.0), or a prior history of surgery (P = 0.14). Alleviation of symptoms was not significantly related to the presence of paradoxical puborectalis contraction demonstrated on either EMG (P = 1) or defecography (P = 0.12). Importantly, outcome was significantly improved in patients who completed the treatment schedule compared with those who self-discharged (P < 0.001).

CONCLUSIONS

Although idiopathic rectal pain is difficult to treat, EMG-based biofeedback can produce alleviation of symptoms. However, success depends on patients' willingness to pursue a full course of therapy.

Biofeedback is effective treatment for levator ani syndrome

PURPOSE

The effects of biofeedback (BF) on pain relief and anorectal physiology in patients with levator ani syndrome (LAS) were prospectively studied.

METHOD

Sixteen consecutive patients (9 men, 7 women; mean age, 50.1 (range, 39-66) years) with LAS were treated with BF from July 1993 to October 1995. Mean duration of pain was 32.5 (standard error of the mean, 6.7) months. All underwent a full course of BF using a manometric balloon technique. Mean follow-up was 12.8 (standard error of the mean, 2.6) months. Pain score and anorectal physiology tests were administered prospectively by an independent observer before and after BF.

RESULTS

After BF, the pain score was significantly improved (before BF: median, 8 (range, 6-10); after BF: median, 2 (range, 1-4); P < 0.02). Analgesic requirements were also significantly reduced (all 16 patients needed nonsteroidal anti-inflammatory drugs (NSAID) before BF; only two patients needed NSAID after BF; P < 0.03). There were no significant changes to the anorectal physiology parameters after BF. To date, there have been no side effects or regressions.

CONCLUSION

Although BF had a negligible effect on anorectal physiologic measurements in LAS, it was effective in pain relief, with no side effects.

MMPI assessment of patients with functional bowel disorders

This prospective study was undertaken to assess personality differences among patients with chronic pelvic floor disorders. Sixty patients (43 females and 17 males) of a mean age of 58 (range, 33-87) years with fecal incontinence (n = 19), constipation (n = 30), or levator spasm (n = 11) had a mean duration of symptoms of 35 (range, 2-50) years. The Minnesota Multiphasic Personality Inventory (MMPI) was utilized for psychologic assessment for all patients prior to treatment. Mean scores for scales 1 (hypochondriasis), 2 (depression), and 3 (hysteria) were significantly elevated for the levator spasm group (71, 75, and 73, respectively). A similar pattern was seen for the constipation group, where the mean scores for scales 1 and 2 were significantly elevated (70 and 74, respectively) with a moderate elevation on scale 3 (68). The hypochondriasis (1), depression (2), and hysteria (3) scales are referred to as the "neurotic triad," and profile patterns such as these indicate that these subjects may manifest their psychologic distress as physical symptoms. By contrast, the fecal incontinence patients were within the normal range on all scales. The information from these MMPI profiles can be used to understand the personality and emotional composition of these patients to assist in their evaluation and treatment.