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Clinical Trial Summary

Diabetic foot ulcers (DFU) are aggressive complications of diabetes mellitus (DM) and affect 25% of these patients. DFU are associated with a high risk of amputations and early mortality and significantly impact quality of life (QoL). The low-level laser therapy (LLLT) is an important approach for the treatment of DFU, however there is a lack of data on its influence on the QoL of patients with DFU. On the other hand, adherence to self-care is a factor closely related to QoL. Therefore, this study is justified by the need to understand the impact of LLLT on QoL and its relationship with self-care. Aim: To evaluate the quality of life of patients with diabetic foot ulcers treated with different doses of LLLT (GaAs) 904 nm and its association with aspects of adherence to self-care. Methods: This is a randomized, double-blind, placebo-controlled clinical trial. Participants will be randomly assigned to the groups: control LLLT placebo (CG), LLLT 904 nm 10 J/cm² (LG1), LLLT 904 nm 8 J/cm² (LG2) and LLLT 904 nm 4 J/cm² (LG3). QoL data, percentage of healing and pain will be assessed before the start of the intervention, in 10th week and after one month to the end of intervention, self-care will be assessed before the start of the intervention and at the end of intervention. Eighty participants with DFU will be recruited who will receive intervention twice a week for up to 20 visits (10 weeks).

Clinical Trial Description

Eighty volunteers will be recruited through the Integrated Center of Medical Specialties (ICMS) and the Center of Health Specialties (CHS) in Parnaíba-PI, Brazil, after thorough examination of the feet and evaluation by a medical professional specializing in vascular surgery. Volunteers with type 2 diabetes mellitus (T2DM) who have DFU without an infectious process (Wagner's grade I and II) will be admitted, of both sexes aged 18 years and over. Inclusion in the study will take place after signing the Informed Consent Form (ICF). The randomization will be of the simple type, a computer generated randomization list through the website will be used to prepare sealed, opaque and sequentially numbered envelopes. A collaborator, who will not participate in the study, will carry out the randomization process, subsequently inserting the allocation data in the envelope. After inclusion, volunteers will be evaluated individually in a reserved room, by a previously trained evaluator and blinded to the allocation of volunteers in the groups. Volunteers will provide their personal data, medical history and duration of T2DM. Subsequently, the physical evaluation and application of the questionnaires will be carried out: (1) application of the SF-36 (Short Form-36 Health Survey) and Summary of Diabetes Self-Care Activities (SDSCA) questionnaires in the form of an interview; (2) vascular evaluation; (3) neurological evaluation; (4) determination of the level of pain and (5) capillary blood glucose. The DFU will be located, recording the affected foot region, the duration in months and the Wagner's classification. The healing process of DFU will be monitored. The total number of LLLT applications performed until complete healing will be identified and the percentage of patients who achieved healing in relation to the cutoff points of the fifth and tenth weeks of intervention. The volunteers in the treatment groups will receive dosage as pre-established (10, 8 or 4 J/cm²) and those in the control group (CG) will receive a placebo application, that is, with the device turned off. For the treatment, the laser tip will be positioned perpendicular to the DFU, the ulcer floor will be irradiated with a sweeping application technique (1 cm away from the ulcer) and the edges with a punctual technique with contact at equidistant points. The total duration of each application will be calculated by the machine based on the selected energy density. Both the therapist and the participant will use the goggles provided before the application. The four groups will receive conventional treatment, cleansing the ulcers with saline solution and dressing with Helianthus Annuus oil. It is expected that the participants in the treatment groups will show significant improvement in QoL and pain after the intervention, less time and a higher percentage of healing compared to the CG. Differences in the improvement of QoL and pain and in the time and percentage of healing between the LLLT dosages used are also expected. It is also assumed that adherence to self-care is capable of predicting the time and percentage of healing and QoL, in the perception that the improvement of the patient with LLLT is also influenced by his attitudes and that self-care also has effects on QoL. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05071235
Study type Interventional
Source Federal University of Piaui
Status Recruiting
Phase Phase 2/Phase 3
Start date August 27, 2019
Completion date November 30, 2021

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