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Randomized Control Trial of Micronized Purified Flavonoid Fraction for Post Operative Treatment in Anal Fistula Surgery

Randomized Control Trial of Micronized Purified Flavonoid Fraction for Post Operative Treatment in Anal Fistula Surgery

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06184438
Enrollment
106
Registered
2023-12-28
Start date
2023-12-13
Completion date
2025-03-31
Last updated
2025-05-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anal Fistula

Keywords

flavnoids, fistulotomy, fistulectomy

Brief summary

The aim of this study is to evaluate the effect of micronized purified flavonoid fraction on postoperative symptoms after surgery of anorectal fistulas.

Detailed description

The current theory of cryptoglandular suggest that perianal fistula occurs when the anal crypt glands become occluded and infected, over 90% of perianal fistulas are cryptoglandular in origin and arise from perianal abscesses. Also inflammatory process might play an important role in the formation of cryptoglandular perianal fistula. This condition is mainly managed with surgery, currently remain majorly on two conventional surgical interventions--fistulotomy and fistulectomy. MPFF is a drug to treat venous vessel disease such as varicose and hemorrhoid, which was found with effects of lowering lymphatic permeability, improving venous return and vessel endothelial inflammation. More research has also shown the effects of MPFF on post hemorrhoidectomy symptom control, such as bleeding, pain, and infection. Since other anorectal surgery has similar complications. Therefor we conducted this randomized control trial to evaluate the benefits of MPFF after anal fistula surgeries.

Interventions

DRUGMicronized purified flavonoid fraction(Daflon 1000mg)

Received Micronized purified flavonoid fraction(Daflon 1000mg) BID after surgery from day to day 7

DRUGPlacebo

Received placebo after surgery.

Sponsors

Taipei Medical University Shuang Ho Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Intervention model description

We designed a randomized controlled trial including 150 eligible patients who underwent fistulotomy or fistulectomy. To evaluate the benefit of using MPFF after fistula surgery, patients were classified into 2 groups: 1. Received MPFF(Daflon 1000mg BID) after surgery. 2. Received placebo after surgery.

Eligibility

Sex/Gender
ALL
Age
20 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* Patients who undergo fistulectomy or fistulotomy are included.

Exclusion criteria

* Emergency operation * Participants who had Trans-sphincteric anal fistula, Extra-sphincteric anal fistula * Participants accompanied by severe liver cirrhosis * Participants accompanied by coagulation disorders * Participants taking anticoagulant * Participants taking corticosteroids as long-term medication. * Participants who had colorectal cancer * Participants taking analgesic drugs (morphine or others) as long-term medication * Participants bed-ridden * Participants who had history of human immunodeficiency virus (HIV) infection * Pregnant woman

Design outcomes

Primary

MeasureTime frameDescription
Post-operative pain0-7 daysRecord the maximum pain score(visual analog scale, 0-10) from post-operative day 0 to day 7.
Frequency of dressing replacement0-7 daysRecord the frequency of dressing replacement from post-operative day 0 to day 7.

Secondary

MeasureTime frameDescription
Incidence of urinary retention0-7daysUrinary retention was defined as patients requiring Foley catheterization during the hospital stay.
Daily activity0-7 daysThe number of days the patient takes to go back to work.
Bowel movement0-7 daysDuration until first bowel movement after surgery.
Analgesic agent use0-7daysDaily consumption of oral analgesics from post-operative day 0 to day 7
Length of hospital stay0-7 daysLength of hospital stay after the surgery.
Wound healing questionnaire0-60 daysEvaluate wound healing at 30 days after operation.
Patient satisfactionPost Operative day 7Questionnaire will be collected after the surgery.
Incidence of surgical site infection0-30 daysSurgical site infection was defined as hospital admission for infection management or need for surgical intervention to manage the wound.

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 5, 2026