Use of Botulinum Toxin A in Direct Eyebrow Lift Scar: a Randomized Controlled Clinical Trial
试验速览
- 阶段
- 2 期
- 状态
- 招募中
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Scar evaluation 1
研究概览
简要总结
Prospective, controlled and randomized study in which participants indicated for surgery to direct eyebrow lift will be randomized into two groups. In addition to surgery, the patients will be treated with botulinum toxin in one eyebrow and saline (placebo) in the other site. The patients participate as treatment and placebo at the same time. Assessments will be carried out through non-invasive exams.
详细描述
A component of eyebrow ptosis, part of the natural aging process, with or without asymmetries, is found in the majority of patients who seek the blepharoplasty procedure.
There are several procedures to address this condition, but none of them is undoubtedly superior to the others. The direct eyebrow lift technique is known for providing good eyebrow suspension, predictable results and relatively low complexity surgery, which can be performed with local anesthesia.
However, the biggest concern for surgeons and patients is the final appearance of the scar, which will be in a visible area of the face. Botulinum toxin A has been used in recent studies precisely to improve the appearance of scars. Previous studies mainly evaluated traumatic lacerations and post-tumor excision reconstructions, obtaining positive results, with an improvement in the appearance of the wounds in patients who used the medication. It is a safe drug, used for several years for other purposes and without serious adverse effects according to these studies.
The objective of this study is to compare the use of botulinum toxin A versus 0.9% saline solution in the healing of direct eyebrow lift surgery.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients over 18 years of age with indication for direct eyebrow lift surgery.
排除标准
- •Vulnerable groups: children, pregnant women and immunosuppressed patients
- •Allergy to botulinum toxin A
- •Patients under 18 years old
- •Women who are breastfeeding
- •Patients with muscular/neuromuscular diseases such as myasthenia gravis and amyotrophic lateral sclerosis
- •Patients who underwent botulinum toxin A injection in the last 6 months prior to surgery
- •Patients with a history of radiotherapy, chemotherapy or hematological disorders
- •Refusal to participate in the study
研究组 & 干预措施
Right side treatment
Patients receive botulinum toxin A in right side eyebrow scar and saline in left side scar.
干预措施: Botulinum toxin type A (Drug)
Left side treatment
Patients receive botulinum toxin A in left side eyebrow scar and saline in right side scar.
干预措施: Botulinum toxin type A (Drug)
结局指标
主要结局
Scar evaluation 1
时间窗: One month, three months and six months after surgery
Eyebrow direct lift scar evaluation, comparing botulinum toxin A side with saline side, using the following assessment scale: Visual Analogue Scale Score (VAS). The VAS is described as a quick and practical way of evaluating the patient's experience in relation to pain, on a scale of 0 to 100 millimeters, ranging from no pain to the worst pain imaginable.17 Due to the ease and simplicity of its application, it is used in several studies to evaluate various parameters, even if not consistent with their original validation. Here it will be using meaning 0 (no scar) and 100 milimeters (worst scar imaginable).
Scar evaluation 2
时间窗: One month, three months and six months after surgery
Eyebrow direct lift scar evaluation, comparing botulinum toxin A side with saline side, using the following assessment scale: Vancouver Scar Scale (VSS). The VSS ranges from 0 (best) to 13 (worst) points, evaluating vascular distribution, thickness, flexibility and pigmentation.
Scar evaluation 4
时间窗: One month, three months and six months after surgery
Eyebrow direct lift scar evaluation, comparing botulinum toxin A side with saline side, using the following assessment scale: Patient and Observer Scar Assessment Scale (POSAS). POSAS was developed in 2004 and is the first scale to consider the perspective of the patient and the evaluator. It is useful in evaluating postoperative and linear scars, ranging from 5 (worst) to 50 (best). It encompasses physical properties of scars such as vascularity, pigmentation, thickness, relief and flexibility, in addition to two patient symptoms, pain and itching.
Scar evaluation 3
时间窗: One month, three months and six months after surgery
Eyebrow direct lift scar evaluation, comparing botulinum toxin A side with saline side, using the following assessment scale: Stony Brook Scar Evaluation Scales (SBSESs). The SBSES was developed for short-term assessment of repaired burns, and is described as useful for assessment of suture scars. It consists of five indicators: length, elevation or depression, color, suture or staple marks and general appearance. Your score ranges from 0 (worst) to 5 (best)
次要结局
未报告次要终点
研究者
Suzana Matayoshi
Professor
University of Sao Paulo