The objective of the study is to compare the effect of two treatments on the healing of venous ulcers in follow-up people in two Primary Health Services, in a city in southern Brazil. The two treatments that will be tested are: (1) the high compression elastic bandage and (2) Unna boot. The two treatments are indicated for the treatment of people with venous insufficiency and who have an active ulcer. The treatment will last 26 weeks (6 months). Once a week, during 26 weeks, a nurse will perform the dressing and will apply the therapy high compression elastic bandage or Unna boot according to a drawing and in every two weeks an evaluator will assess the characteristics of the ulcers and the size.
The primary objective is to compare the effect of two compressive therapies, high compression elastic bandage and Unna boot, on time and on the healing characteristics of venous ulcers in Primary Health Care and the secondary objectives are to verify the effects of the therapies in tissue integrity and at the level of pain, to identify quality of life of the participants and to evaluate the cost-effectiveness of the two therapies from the perspective of the Unified Health System. A randomized clinical trial is being carried out in two Primary Health Services in Porto Alegre city, with people with active venous ulcer. 126 venous ulcers, 63 in each group will be followed. The A group receives elastic compressive therapy (high compression elastic bandage) and the B group receives inelastic compressive therapy (Unna boot) by randomization. Once a week, during 26 weeks, a nurse applies the therapy according to the randomization group. And a blind evaluator for therapies will assess the characteristics of the ulcers and the size, on the first day and in every two weeks until 26ª week.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
61
The nurse will be apply the therapy high compression elastic bandage once a week, during 26 weeks
The nurse will be apply the therapy Unna Boot once a week, during 26 weeks.
Unidade de Saúde Modelo
Porto Alegre, Rio Grande do Sul, Brazil
Unidade de Saúde Santa Cecília
Porto Alegre, Rio Grande do Sul, Brazil
Unidade de Saúde Santa Marta
Porto Alegre, Brazil
Effect of the therapies on time and on the healing characteristics of venous ulcers
A blind evaluator for therapies will assess the characteristics of the ulcers using a Likert scale, being 1 the worst score and 5 best score, proposed to Nursing Outcomes Classification (NOC), in the outcome Wound Healing: Secondary Intention. This outcome has indicators to assess the healing characteristics, such as granulation tissue; necrosis; epithelial tissue; exsudate; erythema; oedema; macerated skin; odor and planimetry.
Time frame: On first day and in every two weeks, during 26 weeks.
The effects of the therapies at the level of pain
A blind evaluator for therapies will ask about of the pain on the first day and in every two weeks.
Time frame: On first day and in every two weeks, during 26 weeks.
Cost-effectiveness of the therapies
Direct costs to perform the dressing will be measured through a tool built by the researches. Every week, the nurses will take notes of all products they used and the time spent to perform the dressing (using a stopwatch). This will be converted into monetary value. Besides that, a blind evaluator for therapies will assess the effectiveness through the wound planimetry. In the end, the relationship between cost-effectiveness will be calculated.
Time frame: 26 weeks
Health-related quality of life
The SF-6D Questionnaire will be applied to the participants to identify the quality of life, on the first day, on the 12ª week and on the 26ª week. The Short Form-6 Dimension (SF-6D) is a widely used preference-based generic health-related quality of life measure with a multiattribute classification system consisting of six dimensions: physical functioning, role functioning, social functioning, pain, mental health, and vitality. Each dimension is composed of three to five levels. The SF-6D values range from 0.315 to 1, with higher scores indicating better health-related quality of life anchoring on the 0 (dead) to 1 (full health) scale.
Time frame: On first day, on the 12ª week and on the 26ª week.
The effects of the therapies at the tissue integrity
A blind evaluator for therapies will assess the tissue integrity using a Likert scale, being 1 the worst score and 5 best score, proposed to Nursing Outcomes Classification (NOC), in the outcome Tissue Integrity: Skin and Mucous Membranes. This outcome has indicators to assess the tissue integrity, such as necrosis; skin hydration and skin pigmentation.
Time frame: On first day and in every two weeks, during 26 weeks.
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