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Sammenlign udfald for stomiens lukningssår mellem NPWT og sekundær helingsintention

19. september 2026 opdateret af: Maryam Arbab

Negativt tryk sårterapi versus sekundær heling ved stomilukning: Et randomiseret kontrolleret forsøg, der evaluerer operationssårinfektion og sårresultater

This was a single-center, parallel-group randomized controlled trial conducted in 2025 at the General Surgery Ward of the Sindh Institute of Urology and Transplantation (SIUT), Karachi. The study compared negative pressure wound therapy (NPWT) with healing by secondary intention (SIH) for patients undergoing stoma reversal surgery.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Study Design and Participants A total of 92 adult patients (aged ≥18 years) scheduled for stoma reversal were assessed for eligibility. Of these, 72 patients who met the inclusion criteria and provided informed consent were enrolled and randomized in a 1:1 ratio into NPWT (intervention) and SIH (control) groups (n=36 each). Eligibility criteria included patients undergoing elective or emergency stoma reversal with conventional layered closure of the muscular layer and skin management by either NPWT or SIH. Exclusion criteria included use of skin closure techniques other than suture, prolonged antibiotic use before surgery, or need for reoperation for causes other than surgical site infection (SSI).

Randomization and Allocation Random allocation was performed using simple random sampling by lot draw. A list of consecutive serial numbers with equal halves of even and odd numbers was utilized. Each number was printed separately on slips of paper and folded to conceal. A slip was drawn for each patients allocation. Patients who drew odd-numbered lots were assigned to the treatment group (NPWT), and those with even-numbered lots to the control group (SIH). This approach ensured unbiased allocation while maintaining transparency.

Interventions In both groups, stoma reversal was performed following standard operative protocols with fascial layer closure using absorbable sutures. In the NPWT group, after the procedure, the skin was left open and covered with four sterile gauze layers. An 18 Fr Nelaton catheter was placed directly over the wound and sealed with transparent, waterproof adhesive to create a vacuum. Continuous negative pressure was applied at 15 mmHg. Dressings were evaluated for SSI on postoperative days 2 and 4 using the ASEPSIS score; if no infection was present, the NPWT dressing was reapplied. On postoperative day 6, a final wound assessment was conducted, and further management was carried out as per departmental protocol.

In the SIH group, the wound was left open and dressed using four layers of sterile gauze and a transparent adhesive dressing. Similar to the NPWT group, dressing changes and assessments using the ASEPSIS score were performed on postoperative days 2, 4, and 6. If an infection was identified, standard management protocols were followed.

All patients received prophylactic antibiotics with piperacillin-tazobactam (4.5 g) administered 30 minutes before incision and three postoperative doses of the same antibiotic.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

72

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Sindh
      • Karachi, Sindh, Pakistan, 74200
        • Sindh Institute of Urology and Transplantation

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

All patients aged between 18-80 years undergoing stoma reversal surgery were included, following their formal consent for inclusion in the study protocol.

Exclusion Criteria:

  • Patients with history of prolonged antibiotic use prior to stoma reversal surgery (>1months).
  • Patients with prior skin condition that required medical treatment (for instance, Plaque Psoriasis).
  • Patient with prior history of wound-related complication (like keloids or hypertrophic scars).

Furthermore, after allocation, the patients with the following protocol violations were also excluded:

  • Patients who had undergone any other forms of wound closure after stoma reversal, that deviated from the study protocol.
  • Patients who were re-operated during the hospital stay for any other reason than surgical site infection.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Negative pressure wound therapy

In the NPWT (negative-pressure wound therapy) group, after the procedure, the skin was left open and covered with four sterile gauze layers. An 18 Fr Nelaton catheter was placed directly over the wound and sealed with transparent, waterproof adhesive to create a vacuum. Continuous negative pressure was applied at 15 mmHg. Dressings were evaluated for Surgical site infection on postoperative days 2 and 4 using the ASEPSIS score; if no infection was present, a NPWT dressing was reapplied. On postoperative day 6, a final wound assessment was conducted, and further management was carried out as per departmental protocol.

In the NPWT (negative pressure wound therapy) group, after the procedure, the skin was left open and covered with four sterile gauze layers. An 18 Fr Nelaton catheter was placed directly over the wound and sealed with transparent, waterproof adhesive to create a vacuum. Continuous negative pressure was applied at 15 mmHg. Dressings were evaluated for SSI on postoperative days 2 and 4 using the ASEPSIS score; if no infection was present, NPWT dressing was reapplied. On postoperative day 6, final wound assessment was conducted and further management was carried out as per departmental protocol.

Ingen indgriben: secondary intention healing

In the SIH (secondary intention healing) group, the wound was left open and dressed using four layers of sterile gauze and a transparent adhesive dressing. Similar to the NPWT group, dressing changes and assessments using the ASEPSIS score were performed on postoperative days 2, 4, and 6. If an infection was identified, standard management protocols were followed.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Highest Postoperative Asepsis Score for SSI assessment
Tidsramme: Post-operative day (POD) 2, 4 and 6 (ASEPSIS score recorded)

The primary outcome was the occurrence and severity of surgical site infection, assessed using the ASEPSIS scoring system (Additional treatment, Serous discharge, Erythema, Purulent exudate, Separation of deep tissues, Isolation of bacteria, and Stay duration as an inpatient) on postoperative days 2, 4, and 6. The highest ASEPSIS score recorded across these time points was used for between-group comparison. The score may vary between. 0-70 with higher score representing worse outcome.

Post-operative day (POD) 2, 4 and 6 (ASEPSIS score recorded)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Scar Cosmesis Assessment and Rating (SCAR) score on postoperative day 30
Tidsramme: On Postoperative day 30 wound cosmesis were assessed using scar scale

All patient's operative wounds were assessed for cosmesis on postoperative day 30. This was performed utilizing the Scar Cosmesis Assessment and Rating (SCAR) scale for objective assessment. Scores range from 0 (best possible scar) to 15 (worst possible scar).

On Postoperative day 30 wound cosmesis were assessed using scar scale
Length of Stay
Tidsramme: 6-12 days. Following completion of study observations on postoperative day 6, patient may be discharged on meeting the discharge criteria. Expected between 6-12 days.

Duration of stay assessed as: number of days of hospital stay after the index procedure till the patient discharged from hospital was recorded.

6-12 days. Following completion of study observations on postoperative day 6, patient may be discharged on meeting the discharge criteria. Expected between 6-12 days.

Samarbejdspartnere og efterforskere

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Sponsor

Samarbejdspartnere

Datoer for undersøgelser

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Studer store datoer

Studiestart (Faktiske)

24. februar 2025

Primær færdiggørelse (Faktiske)

30. august 2025

Studieafslutning (Faktiske)

30. august 2025

Datoer for studieregistrering

Først indsendt

23. september 2025

Først indsendt, der opfyldte QC-kriterier

27. november 2025

Først opslået (Faktiske)

2. december 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

23. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • SIUT-ERC-2025/A-275

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