Department for Visceral and Transplantation Surgery, University Hospital Zürich, Rämistrasse 100, 8091, Zurich, Switzerland, dieter.hahnloser@usz.ch.
BACKGROUND AND AIMS: Chronic anal fissures are difficult to treat. The aim of this retrospective study was to determine the outcome of combined fissurectomy and injection of botulinum toxin Type A (BT). MATERIALS AND METHODS: Between January 2001 and August 2004, 40 patients (21 women), median age 37 years (range 18 to 57), underwent fissurectomy and BT injection. Fissurectomy was performed followed by injection of 10 U of BT into the internal anal sphincter on both sides of the fissure. All patients were clinically checked 6 weeks after the operation. At 1 year, patients were sent a detailed questionnaire regarding symptoms, recurrence and further treatment for evaluation of long-term results. RESULTS/FINDINGS: At 6 weeks, 38 patients (95%) were free of symptoms. No adverse effects were detected. The response rate of questionnaires was 93%; the median follow-up was 1 year (range 0.9 to 1.6). In the long-term, a recurrence was found in four patients. These patients were treated successfully with repeated fissurectomy and BT injections and salvage procedures, respectively. Overall, the success rate of combined fissurectomy and BT injection was 79%. INTERPRETATION/CONCLUSION: Combined fissurectomy and Botox injection for chronic anal fissure is an excellent and safe procedure with low morbidity and a high healing rate.
PMID: 17262202 [PubMed - as supplied by publisher
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Northern General Hospital, Department of General Surgery, Herries Road, Sheffield, UK. rick.nelson@sth.nhs.uk
BACKGROUND: Because of the disability associated with surgery for anal fissure and the risk of incontinence, medical alternatives for surgery have been sought. Most recently, pharmacologic methods that relax the anal smooth muscle, to accomplish reversibly what occurs in surgery, have been used to obtain fissure healing. OBJECTIVES: To assess the efficacy and morbidity of various medical therapies for anal fissure. SEARCH STRATEGY: Search terms include "anal fissure randomized". Timing from 1966 to May 2006. Further details of the search below. SELECTION CRITERIA: Studies in which participants were randomized to a non-surgical therapy for anal fissure. Comparison groups may include an operative procedure, an alternate medical therapy or placebo. Chronic fissure, acute fissure and fissure in children are included in the review. Atypical fissures associated with inflammatory bowel disease or cancer or anal infection are excluded. DATA COLLECTION AND ANALYSIS: Data were abstracted from published reports and meeting abstracts, assessing method of randomization, blinding, "intention to treat" and drop-outs, therapies, supportive measures (applied to both groups), dosing and frequency and cross-overs. Dichotomous outcome measures included Non-healing of the fissure (a combination of persistence and recurrence), and Adverse events (including incontinence, headache, infection, anaphylaxis). Continuous outcome measures included measures of pain relief and anorectal manometry. MAIN RESULTS: 48 different comparisons of the ability of medical therapies to heal anal fissure have been reported in 53 RCTs. Eleven agents were used (nitroglycerin ointment (GTN), isosorbide dinitrate, Botulinum toxin (Botox), diltiazem, nifedipine (Calcium channel blockers or CCBs), hydrocortisone, lignocaine, bran, minoxidil, indoramin, and placebo) as well as anal dilators and surgical sphincterotomy.GTN was found to be marginally but significantly better than placebo in healing anal fissure (48.6% vs. 37%, p < 0.004), but late recurrence of fissure was common, in the range of 50% of those initially cured. Botox and CCBs were equivalent to GTN in efficacy with fewer adverse events. No medical therapy came close to the efficacy of surgical sphincterotomy, though none in these RCTs was associated with the risk of incontinence. AUTHORS' CONCLUSIONS: Medical therapy for chronic anal fissure, acute fissure and fissure in children may be applied with a chance of cure that is marginally better than placebo, and, for chronic fissure in adults, far less effective than surgery.
PMID: 17054170 [PubMed - indexed for MEDLINE
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Medisch Spectrum Twente, Afd. Chirurgie, Haaksbergerstraat 55, 7500 KA Enschede.
OBJECTIVE: To determine the effectiveness of injection of botulinum-A toxin in the internal anal sphincter as a treatment for chronic therapy-resistant anal fissures. DESIGN: Prospective. METHODS: In the period October 2002-February 2005, 32 consecutive patients (15 men and 17 women), with a median age of 44 years (range: 23-78 years) and suffering from chronic isosorbide dinitrate ointment-resistant anal fissures, were treated with an injection of 40 IU botulinum-A toxin (Dysport, Ipsen, The Netherlands) in the ventral side of the internal anal sphincter. The injection was given as an outpatient procedure under general or spinal anaesthesia. RESULTS: After a median follow-up of 14 months (range: 2-28 months), the chronic anal fissures were cured in 24 ofthe 32 patients (75%). Twenty-two patients were given a second or a third injection. A fissure recurred in one of the cured patients (4%), and one patient suffered from temporary flatus incontinence. CONCLUSION: Botulinum-A toxin injections were effective in 75% of patients with isosorbide dinitrate ointment-resistant chronic anal fissures. This is a simple technique with fewer side effects than local application of NO donors and fewer complications and less morbidity than surgical sphincterotomy.
PMID: 16892615 [PubMed - indexed for MEDLINE
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PMID: 16741641 [PubMed - indexed for MEDLINE
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PMID: 16801892 [PubMed - indexed for MEDLINE
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Unidad de Coloproctología, Servicio de Cirugía General y Aparato Digestivo, Hospital General Universitario de Elche, Elche, Alicante, España. arroyocir@hotmail.com
INTRODUCTION AND AIM: To evaluate the effectiveness of botulinum toxin in the treatment of chronic anal fissure after long-term follow-up and establish the manometric factors related to recurrence. PATIENTS AND METHOD: We performed a prospective study in 50 consecutive patients with chronic anal fissure who were treated with 25 U botulinum toxin injected into the internal sphincter. Clinical and manometric parameters were recorded until the fourth year of follow-up. RESULTS: There was a tendency to progressive recurrence over time (54% at 4 years) associated with manometric factors indicating hyperexcitability of the internal anal sphincter (persistently elevated mean resting pressure, percentage of time with slow waves, and number of patients or percentage of time with ultra-slow waves after treatment). CONCLUSIONS: Treatment of chronic anal fissure with botulinum toxin leads to long-term cure in less than 50% of patients. In patients with manometric factors related to recurrence, this treatment is insufficient for definitive cure.
PMID: 15989810 [PubMed - indexed for MEDLINE
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PMID: 15622590 [PubMed - indexed for MEDLINE]
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PMID: 15571027 [PubMed – indexed for MEDLINE

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