Mean Healing Time of Wound After Vacuum Assisted Closure (VAC) Versus Conventional Dressing in Diabetic Foot Ulcer Patients

July 1, 2021 updated by: Mehwish Mooghal , MBBS, Bahria University

Comparison of the Mean Healing Time of Wound After Vacuum Assisted Closure (VAC) Versus Conventional Dressing in Diabetic Foot Ulcer Patients

Comparison the mean healing time of wound after vacuum assisted closure(VAC) versus conventional dressing(CD) in diabetic foot ulcer(DFU) patients.

DFUs are chronic wounds in diabetics resulting from ischemia, angiogenesis defects and impaired immunity. Different treatment modalities are available for treating DFUs. Amongst them VAC provides a new paradigm for diabetic wound dressing. Different studies concluded that DFUs treated with VAC are more likely to heal than CD.

The average healing time varies greatly among different studies conducted. Therefore, we conducted this study to compare the mean healing time of wound after VAC and CD in DFU patients. Based on these results, the method with lesser healing time can be opted for our routine practice guidelines for DFU patient's management protocol.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This Randomized controlled trial was conducted at Department of General Surgery, at a tertiary teaching hospital , over duration of six months from 28th February 2020 to 27th August 2020. The calculated sample size was 60 i.e. 30 cases in each group, with 5% level of significance, 80% power of study and taking mean healing time with VAC therapy as 11.366 ± 3.488 days and with conventional dressing as 16.41 ± 3.104 days.6 Non-probability, consecutive sampling technique was used.

After taking permission from ethical review committee , total 60 patients who were presented in outpatient Department of Surgery, at a tertiary care Hospital, Karachi, fulfilling the inclusion criteria was selected. After informed, written consent, all selected cases were offered to pick up a slip from total mixed up slips (half-slips contained letter 'A' and other half slips contained letter 'B') and he/she was placed in that respective group. In group A patients, VAC dressing was applied while in group B conventional dressing was applied. In patients undergoing vacuum assisted closure a drainage tube was placed in the wound followed by dressing with sterile foam sheet and application of occlusive transparent film over the whole assembly. The drainage tube was connected to a suction machine. Intermittent negative pressure of -125mmHg was applied every 15 minutes; the suction was stopped for 10 minutes. The dressing was changed every 48 hours. In patients with conventional dressings, after wound wash, pyodine soaked gauze pieces were used for initial 48 hours followed by dressings of normal saline soaked gauze pieces, twice daily. All patients were followed regularly by the single researcher and mean healing time was noted in every patient of both groups as described in operational definition. This all data (age, gender, duration of ulcer, and size of ulcer, BMI, and healing time) was recorded on a specially designed Performa designed beforehand.

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Pakistan
    • Sindh
      • Karachi, Sindh, Pakistan, 74800
        • Bahria University Medical and Dental College Karachi

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

25 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

1. All patients with diabetic foot ulcer of >2 weeks duration. 2. Size of ulcer >3 cm. 3. Well controlled diabetes (HbA1C=6-8.3%). 4. Age 25-65 years. 5. Both genders.

-

Exclusion Criteria:

  1. Anemic patients (hemoglobin <10 g/dl).
  2. Patients with history of steroid intake.
  3. Patients with chronic renal failure (assessed on history and s/creatinine >1.5 mg/dl).
  4. Patients with history of immunosuppressive therapy.

  5. Ulcers involving bone as well.

    -

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group A
Group A included participants who underwent VAC therapy for diabetic Foot ulcers
Procedure: Vacuum assisted closure VAC vs conventional dressing

In participants undergoing vacuum assisted closure a drainage tube was placed in the wound followed by dressing with sterile foam sheet and application of occlusive transparent film over the whole assembly. The drainage tube was connected to a suction machine. Intermittent negative pressure of -125mmHg was applied every 15 minutes; the suction was stopped for 10 minutes. The dressing was changed every 48 hours.

In participants with conventional dressings, after wound wash, pyodine soaked gauze pieces were used for initial 48 hours followed by dressings of normal saline soaked gauze pieces, twice daily.

Other Names:
  • Conventional Dressing
Active Comparator: Group B
Group B included participants who underwent conventional dressings for diabetic foot ulcers
Procedure: Vacuum assisted closure VAC vs conventional dressing

In participants undergoing vacuum assisted closure a drainage tube was placed in the wound followed by dressing with sterile foam sheet and application of occlusive transparent film over the whole assembly. The drainage tube was connected to a suction machine. Intermittent negative pressure of -125mmHg was applied every 15 minutes; the suction was stopped for 10 minutes. The dressing was changed every 48 hours.

In participants with conventional dressings, after wound wash, pyodine soaked gauze pieces were used for initial 48 hours followed by dressings of normal saline soaked gauze pieces, twice daily.

Other Names:
  • Conventional Dressing

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Comparison of mean healing time of wounds in diabetic foot ulcers among Vac and conventional dressings
Time Frame: 1 month
participants were assessed for mean healing time of wound after VAC theray and conventional dressing. All participants were followed regularly by the single researcher and mean healing time was noted in every patient of both groups . Healing time was measured in number of days. The start time was the application of first VAC and end time will be the day of wound healing (appearance of granulation tissue over wound as assessed clinically). Similarly start time in conventional dressings was from day of first application of conventional dressing till appearance of granulation tissues over the wound. In both groups mean healing time was compared to see any difference in healing time of both the groups.
1 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bahria University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 28, 2020

Primary Completion (Actual)

August 27, 2020

Study Completion (Actual)

August 27, 2020

Study Registration Dates

First Submitted

June 25, 2021

First Submitted That Met QC Criteria

July 1, 2021

First Posted (Actual)

July 13, 2021

Study Record Updates

Last Update Posted (Actual)

July 13, 2021

Last Update Submitted That Met QC Criteria

July 1, 2021

Last Verified

July 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • VAC vs Conventional Dressing

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

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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