Effect of Antiseptic Irrigations With 0.05% Chlorhexidine Gluconate (Irrisept) Versus Normal Saline on Fasciocutaneous Flap-Based Closure of Pilonidal Disease

Effect of Antiseptic Irrigations With 0.05% Chlorhexidine Gluconate (Irrisept) Versus Normal Saline on Fasciocutaneous Flap-Based Closure of Pilonidal Disease With Myriad Extracellular Matrix Implantation

Pilonidal disease is a chronic condition that causes painful inflammation and infection near the top of the buttocks. Many patients require surgery, and one commonly used approach is a bilateral gluteal fasciocutaneous flap with midline closure along with placement of an extracellular matrix to support wound healing. Although effective, this surgery can still lead to wound problems such as infection, fluid collection (seroma), wound separation (dehiscence), and delayed healing.

This study aims to compare two different solutions used to rinse the surgical wound before closing it. One solution is Irrisept, which contains 0.05% chlorhexidine gluconate, an antiseptic designed to reduce bacteria. The other is normal saline, which is the current standard rinse used in surgery. The goal is to determine whether using Irrisept can safely reduce post-operative infections and wound-related complications in patients undergoing flap closure and extracellular matrix implantation for pilonidal disease.

Study Overview

• Status: Recruiting
• Conditions: Pilonidal Disease
• Intervention / Treatment: Device: Irrisept (0.05% chlorhexidine gluconate); Other: Normal Saline

Detailed Description

Pilonidal sinus disease (PSD) is an acquired condition involving chronic inflammation and infection in the sacrococcygeal region. Over time, PSD can lead to recurrent infections, draining tracts, abscess formation, and the need for repeated procedures. Surgical management often includes flap-based closure techniques. The bilateral gluteal fasciocutaneous flap with midline closure, combined with implantation of an extracellular matrix, is designed to provide durable coverage and improve wound healing. However, wound-related complications remain common. Reported rates of wound dehiscence for flap-based closures range from approximately 10% to 36%, and infection and seroma formation continue to be major concerns.

This prospective study evaluates whether the use of Irrisept (0.05% chlorhexidine gluconate) as an antimicrobial irrigation solution during flap closure can reduce these complications compared with standard irrigation using normal saline. The study will assess safety and effectiveness by comparing the rates of postoperative infection, seroma, hematoma, wound dehiscence, and time to complete wound healing between the two groups.

Participants will be adults undergoing bilateral gluteal fasciocutaneous flap closure with implantation of the Myriad extracellular matrix for treatment of pilonidal disease. All other aspects of surgical care will follow standard practice. Participants will be monitored after surgery for healing progress and any treatment-emergent adverse events.

• Study Type: Interventional
• Enrollment (Estimated): 60
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Yosef Nasseri, MD; Phone Number: 310-289-1518; Email: yosefn@surgerygroupofla.com

Study Locations

• United States
  • California
    • Los Angeles, California, United States, 90048
      • Recruiting
      • Surgery Group LA
      • Contact: Yosef Nasseri, MD; Phone Number: 310-289-1518
      • Principal Investigator: Yosef Nasseri, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Willing and able to provide written informed consent and to comply with the requirements of the Clinical Investigational Plan
2. Male or female patients aged 18 years or above
3. Patients scheduled for flap-based procedure for pilonidal disease with planned use of Irrisept or normal saline irrigation
4. Subjects who are willing and able to comply with all aspects of the treatment and evaluation schedule

Exclusion Criteria:

1. Known allergy to contents of Irrisept (chlorhexidine gluconate)
2. Full-thickness ('third degree') burns
3. Wounds with uncontrolled clinical infection (CDC Contamination Grade 4)
4. Any medical condition or serious intercurrent illness that, in the opinion of the investigator, may make it undesirable for the patient to participate in the study
5. Currently participating or has participated in another clinical study within 30 days prior to enrollment
6. Pregnant or lactating women
7. Any subject who, at the discretion of the Investigator, is not suitable for inclusion in the study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Arm 1: Irrisept (0.05% Chlorhexidine Gluconate) Irrigation; Participants undergoing bilateral gluteal fasciocutaneous flap closure with implantation of Myriad extracellular matrix will receive intraoperative wound irrigation using Irrisept (0.05% chlorhexidine gluconate) according to the surgeon's standard technique. Irrigation is applied immediately before surgical closure.	Device: Irrisept (0.05% chlorhexidine gluconate); Irrisept solution will be used to irrigate the surgical wound prior to flap closure. The solution is applied using manufacturer-recommended technique and volume. No other changes to surgical care are made.; Other Names: Chlorhexidine gluconate wound lavage; CHG 0.05% irrigation
Active Comparator: Arm 2: Normal Saline Irrigation (Standard of Care); Participants undergoing bilateral gluteal fasciocutaneous flap closure with implantation of Myriad extracellular matrix will receive intraoperative wound irrigation using sterile normal saline, consistent with current standard surgical practice.	Other: Normal Saline; Sterile normal saline will be used to irrigate the surgical wound prior to flap closure according to the surgeon's standard technique. No antiseptic agents will be added.; Other Names: Sterile saline; standard irrigation

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Treatment-Emergent Adverse Events (TEAEs)	Proportion of participants who experience any treatment-emergent adverse event following surgery and throughout the follow-up period. Adverse events include any unfavorable or unintended sign, symptom, or medical occurrence temporally associated with the study intervention.	From the day of surgery through 3-month postoperative follow-up

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to Complete Wound Healing	Number of weeks from surgery to complete wound healing, defined as full epithelialization without drainage, dehiscence, or need for additional wound treatment.	Up to 3 months after surgery
Postoperative Infection Rate	Proportion of participants who develop a postoperative surgical site infection, defined by clinical assessment as purulent drainage, positive wound culture, or physician diagnosis requiring antibiotics or procedural intervention.	Up to 3 months after surgery
Seroma or Hematoma Formation	Proportion of participants who develop a postoperative seroma or hematoma confirmed by clinical exam or imaging and requiring observation or intervention.	Up to 3 months after surgery
Wound Dehiscence	Proportion of participants who experience wound separation (partial or complete) requiring additional wound care, packing, or procedural management.	Up to 3 months after surgery

Collaborators and Investigators

• Sponsor: Yosef Nasseri, MD
• Collaborators: Irrimax Corporation

Study record dates

Study Major Dates

• Study Start (Actual): February 17, 2026
• Primary Completion (Estimated): June 1, 2027
• Study Completion (Estimated): December 1, 2027

Study Registration Dates

• First Submitted: January 5, 2026
• First Submitted That Met QC Criteria: January 5, 2026
• First Posted (Actual): January 7, 2026

Study Record Updates

• Last Update Posted (Actual): March 27, 2026
• Last Update Submitted That Met QC Criteria: March 25, 2026
• Last Verified: March 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pharmaceutical Preparations; Investigative Techniques; Therapeutics; Physical Therapy Modalities; Crystalloid Solutions; Isotonic Solutions; Solutions; Rehabilitation; Hydrotherapy; Saline Solution; Therapeutic Irrigation
• Other Study ID Numbers: Pro00091579

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes