Phototherapy in DM Amputation Ulcers.

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Clinical Phase

NA

Study Classification

INTERVENTIONAL

Study Start Date

2017-01-31

Study Completion Date

2020-12-31

Brief Summary

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Diabetes mellitus is a major public health problem and it is estimated that 300 million individuals will be affected by the year 2030. Non-diabetic ulcers are one of the most frequent complications of this disease and, if untreated, can lead to the amputation of lower limbs. Thus, there has been growing interest in the use of light emitting diode (LED) devices to accelerate the tissue repair process and lower the cost of ulcer treatment in this population. The Mandaqui hospital complex is a general, tertiary, teaching hospital that is a reference center for revascularization surgery and endovascular treatment in Brazil. The aim of the proposed study is to evaluate the action of LED therapy on the complete healing of ulcers following minor amputations in patients with Diabetes mellitus. Methods: A single-center, randomized, controlled, double-blind, clinical trial with two parallel groups will be conducted following the criteria of the CONSORT Statement. The project will be registered with www.clinicaltrials.gov. The sample will be composed of 40 patients with a diagnosis of Diabetes mellitus in follow up at the vascular clinic of Mandaqui hospital complex who meet the inclusion criteria. The control group (n = 20) will receive traditional rayon bandages with essential fatty acids and secondary coverage with gauze, which will be changed on a weekly basis. The treatment group (n = 20) will be submitted to LED therapy (635 nm; 4 J/cm2; 10 minutes) with weekly applications and the ulcers will also receive the traditional bandage treatment described above. The patients will be followed up until the complete closure of the ulcer, which will be the primary outcome. The ulcers will be examined on a weekly basis by a researcher with no awareness regarding the allocation of the individuals to the different groups and will assess, signs of infection, edema, redness, heat and the presence of gangrene. Photographs of the ulcers will also be taken for the subsequent determination of the area. Another researcher with no knowledge regarding the allocation of the participants will measure the surface of the ulcers with the aid of the ImageJ software program. The data will be submitted to appropriate statistical analyses. After closure of the ulcers, the patients will be followed up for a period of six months.

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Detailed Description

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Justification Various studies have demonstrated that phototherapy (laser or LED) is effective at enhancing skin wounds. The biological effects of both forms are similar and related to an increase in fibroblasts, the stimulation of angiogenesis, an increase in collagen synthesis, the formulation of granulation tissue and a reduction in inflammatory cells. Moreover, both forms of phototherapy increase the healed area in a shorter period of time, with LED demonstrating a late-onset effect on the healing process. In patients with partial foot amputation, this time is crucial for the fitting of the prosthetic and, consequently, the beginning of physical therapy and early locomotion. Diminishing the treatment time, with the patient observing a gradual progression in the healing process and experiencing a consequent increase in quality of life, could be a transforming factor to avoid the recurrence of ulcers and avoid further amputations.

Hypothesis

Alternative hypothesis: LED therapy is effective at potentiating the complete closure of ulcers in a shorter time following minor amputations in individuals with Diabetes mellitus.

Hull hypothesis: LED therapy is not effective at potentiating the complete closure of ulcers in a shorter time following minor amputations in individuals with Diabetes mellitus.

Methods A single-center, randomized, controlled, double-blind clinical trial with two parallel groups will be conducted in accordance with the criteria contained in the Consolidated Standards of Reporting Trials (CONSORT statement).

The sample will be composed of patients diagnosed with Diabetes mellitus in medical follow up at the vascular outpatient clinic of the Mandaqui Hospital Complex of São Paulo. Twenty patients will be analyzed in each group, as this is the estimate of surgical treatment for each vascular surgeon in a one-year period at the Mandaqui Hospital Complex.

Randomization and formation of groups Patient allocation will be performed by a researcher with no contact with the patients or main researchers. Randomization will be conducted in blocks of four for the balanced distribution of the experimental groups. For such, a lottery of 40 numbers will be conducted using a free program available at http://www.randomization.com, version from March 29, 2013.

Opaque envelopes will be identified with sequential numbers. A piece of paper containing information on the corresponding group determined through the randomization process (control or LED) will be placed into each envelope. The envelopes will remain sealed in numeric order in a secure location until the time of the treatments of the post-amputation ulcers. The researcher in charge of the randomization process and preparation of the envelopes will not be involved in any other aspect of the study.

Immediately following surgery, the main researcher, who will be in the surgical ward, will open an envelope without altering the numeric sequence and will perform the procedure indicated (active LED + bandaging or placebo LED + bandaging). The 40 patients will be allocated to the experimental and control groups in an equal fashion.

Conditions

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Diabetes Mellitus Amputation Stumps Diabetic Foot

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Control group

Control group - gold standard: Conventional ulcer treatment with Rayon® and essential fatty acids (Dersani®). Cleaning of the surgical wound will be performed with saline solution. The wound will then be covered with a sterile polyethylene film, over which the LED plate will be positioned for placebo treatment (emission of sound, but with the device switched off). After 10 minutes, the LED plate and polyethylene film will be removed and the surgical wound will be covered with rayon moistened with essential fatty acids (following the standard protocol of the hospital), followed by the application of gauze and finalization with a crepe bandage.

Group Type ACTIVE_COMPARATOR

Control group

Intervention Type PROCEDURE

Conventional ulcer treatment with rayon® (Polar Fix, Polar Fix, Mauá, SP, Brazil) and essential fatty acids (Dersani®, Saniplan, Daudt, São Paulo, SP, Brazil) (composition: decanoic acid, caprylic acid, hexanoic acid, lauric acid, linoleic acid, lecithin, retinyl palmitate, tocopheryl acetate and alpha-tocopheryl).

LED group

LED group: Cleaning of the surgical wound will be performed with saline solution and the wound will be covered with a sterile polyethylene film, over which the LED plate will be positioned for active treatment with the device switched on. After 10 minutes, the LED plate and polyethylene film will be removed and the surgical wound will be covered with rayon moistened with essential fatty acids (following the standard protocol of the hospital), followed by the application of gauze and finalization with a crepe bandage.

Group Type EXPERIMENTAL

LED

Intervention Type RADIATION

A device with 36, rectangular, red LEDs, registered with the Brazilian National Health Surveillance Agency (ANVISA authorization nº 8.04554.6), λ = (650 ± 20) nm, with an output power of 324 mW and an output area of 2.54 cm2 (Cosmedical, Brazil), will be enveloped with sterile, disposable, plastic wrap (transparent in the red wavelength) to permit contact with the skin for ten minutes during each session. The plastic wrap will be changed after each use. The amount of energy delivered will be 194.4 J.

Interventions

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LED

A device with 36, rectangular, red LEDs, registered with the Brazilian National Health Surveillance Agency (ANVISA authorization nº 8.04554.6), λ = (650 ± 20) nm, with an output power of 324 mW and an output area of 2.54 cm2 (Cosmedical, Brazil), will be enveloped with sterile, disposable, plastic wrap (transparent in the red wavelength) to permit contact with the skin for ten minutes during each session. The plastic wrap will be changed after each use. The amount of energy delivered will be 194.4 J.

Intervention Type RADIATION

Control group

Conventional ulcer treatment with rayon® (Polar Fix, Polar Fix, Mauá, SP, Brazil) and essential fatty acids (Dersani®, Saniplan, Daudt, São Paulo, SP, Brazil) (composition: decanoic acid, caprylic acid, hexanoic acid, lauric acid, linoleic acid, lecithin, retinyl palmitate, tocopheryl acetate and alpha-tocopheryl).

Intervention Type PROCEDURE

Other Intervention Names

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Photobiomodulation with light emmiting diode (LED)

Eligibility Criteria

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Inclusion Criteria

* age 18 years or older;
* type 2 diabetes;
* either gender;
* adequate cognitive capacity to maintain the foot without load or pressure as much as possible based on the location of the ulcer;
* under care at the vascular surgery outpatient clinic of the Mandaqui Hospital Complex between January 2017 and december 2018, having undergone partial minor amputation at the same hospital (toes, foot, disarticulation at the metatarsal-phalangeal or transmetatarsal joint).

Exclusion Criteria

* presence of infected ulcers;
* under surveillance for cancer or having undergone anti-neoplasm treatment in previous three months;
* currently pregnant or nursing;
* uncontrolled diabetes;
* Neuropathic arthropathy;
* participation in other concomitant clinical trial.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No