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CompletedNCT06663527CPDUpdated Aug 12, 2025

Compound Phellodendron Decoction May Promote Wound Healing After Anal Fistulotomy

An interventional study of Fumigating-washing Therapy With CPD and fumigating-washing therapy with a placebo in Fistula in Ano, sponsored by The Second Affiliated Hospital of Anhui University of Traditional Chinese Medicine. Completed at 1 site in China. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-08-12.

Sponsored by The Second Affiliated Hospital of Anhui University of Traditional Chinese Medicine · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Sitz-bath therapy with Chinese medicine has significant advantages in the management of postoperative wounds of anal fistula. This method not only ensures safety, efficacy, and cost-effectiveness, but also simplifies application. With a firm foundation in a historical heritage, this method is notable for their minimal adverse reactions. The fumigating-washing or sitz-bath therapy with Compound Phellodendron Decoction (CPD) for postoperative wounds of anal fistula has demonstrated efficacy in mitigating pain, reducing edema, curbing secretions, alleviating skin itching, and promoting wound healing processes. Despite the body of clinical research in this domain is substantial, the majority of studies have been limited to observing therapeutic outcomes. The intrinsic mechanisms by which these effects are achieved remain elusive. This study aims to unravel the potential mechanisms underpinning CPD's promotion of wound healing, focusing on the aspects of inflammation and immunity.

02

Conditions studied

  • Fistula in Ano

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Keywords

  • Anal fistula
03

In context

Rectal Fistula

169 studies on the registry are indexed under Rectal Fistula; 45 are open to participants now.

This study's enrollment of 60 is close to the median of 66 across 115 interventional studies indexed under Rectal Fistula.

Browse Rectal Fistula studies →

Lead sponsor

The Second Affiliated Hospital of Anhui University of Traditional Chinese Medicine is the lead sponsor of 7 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:age range of 18 to 80 years who had undergone anal fistulotomy procedures.

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Exclusion Criteria:patients with Crohn's disease, pregnancy or lactation, organ dysfunction (such as heart failure, respiratory insufficiency, liver or renal impairment, gastrointestinal dysfunction), coagulopathy, diseases, or a history of to Chinese medicinal substances.

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Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Study Group

    Study group (n=30) treated fumigating-washing therapy with the CPD

    Combination Product: Fumigating-washing Therapy With CPD

  • Placebo comparator
    Control Group

    Control group (n=30) underwent fumigating-washing therapy with a placebo

    Combination Product: fumigating-washing therapy with a placebo

Interventions

  • Combination productFumigating-washing Therapy With CPD

    All patients underwent anal fistulectomy based on the Parks classification. For postoperative infection prophylaxis, cefuroxime was used at a dosage of 2g per dose, twice daily. Commencing the day following surgery, a fumigating-washing therapy was conducted once daily either after defecation or two hours prior to intravenous infusion. In the study group, a medical solution used for fumigating-washing therapy was prepared by blending 200 ml of CPD with 2 liters of water at 40 °C. This medicinal solution was then transferred into the reservoir of an ultrasonic atomizing fumigating-washing device (Model:TM50-C, Xuzhou Tianma Medical Equipment Factory, China) that was classified by the FDA as Class II (special controls).

  • Combination productfumigating-washing therapy with a placebo

    fumigating-washing therapy with a placebo

06

What researchers measure

Primary outcomes

  1. The healing duration of wounds

    The healing duration of wounds, edema, exudation, and pain scores, served as the principal observation index.

    Time frame: The healing duration of wounds, edema, exudation, and pain scores, served as the principal observation index.

07

Study locations

1 site
  • Anhui university of Chinese Medicine
    Hefei, Anhui 230000, China
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 12, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06663527
Lead sponsor
The Second Affiliated Hospital of Anhui University of Traditional Chinese Medicine
Responsible party
Heng Deng (The Second Affiliated Hospital of Anhui University of Chinese Medicine, The Second Affiliated Hospital of Anhui University of Traditional Chinese Medicine) — Principal investigator
First posted
Oct 29, 2024
Start date
Oct 26, 2024
Primary completion
Feb 1, 2025
Completion
Feb 1, 2025
Last update
Aug 12, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2024. You cannot join it, but the record below documents what was studied.

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