Feasibility Study of Cryotherapy for Chronic Venous Disorders (Cryo)
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
|Official Title:||Cryotherapy for Chronic Venous Disorders|
- improvement of skin microcirculation [ Time Frame: 30 days ]
- leg pain [ Time Frame: 30 days ]
- quality of life [ Time Frame: 30 days ]
|Study Start Date:||September 2007|
|Study Completion Date:||August 2009|
|Primary Completion Date:||June 2009 (Final data collection date for primary outcome measure)|
Other: cyrotherapy as a cool gel wrap
Chronic venous disorders (CVDs) often cause long-term disability for those who experience the worst manifestations of CVDs: disabling pain and non-healing leg ulcers. Such disabilities have significant socioeconomic implications in terms of lost work days and wages, decreased productivity,and ultimately increased health care costs that deteriorate the well-being and quality of life for those who have CVD-induced illnesses. Because no reliable preventive mechanisms exists for CVDs, this study proposes a preventive, self-management cryotherapy intervention that targets inflamed skin of populations with CVDs at highest risk of developing chronic leg ulcers. The proposed cryotherapy intervention will utilize a randomized controlled clinical trial to develop a method to reduce clinical symptoms by improving existing therapy - it is not a treatment for CVDs itself. In the proposed pilot feasibility study, subjects will be randomized to two groups; the cryotherapy intervention group (n=30) who will receive a four-week, cryotherapy gel wrap applied daily to the affected skin of the lower legs in addition to the standard of care (usual care). The control group (n=30) will receive the usual care of compression wraps or stockings applied to the lower legs and daily leg elevation. With this method, improvement of skin microcirculation, reduced leg pain, and improvement in quality of life will be observed. The following aims will test the hypothesis:
Aim 1: Evaluate the feasibility of the novel intervention including treatment fidelity, subject training, safety, and side effects associated with equipment and recruitment efforts and further refine the intervention protocol, including questionnaires used in our previous studies.
Aim 2: Estimate variability of outcome measurements and effect sizes needed to calculate sample size for a subsequent larger, adequately powered, randomized clinical trial of the efficacy of the novel cryotherapy intervention.
Aim 3: Investigate the presence of a preliminary "signal" of clinical efficacy of the experimental treatment by evaluating trends toward statistical significance for the hypothesis that the experimental group will experience greater reduction in skin temperature and blood flow, greater improvement in pain, and greater improvement in quality of life.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00617825
|United States, South Carolina|
|Medical University of South Carolina|
|Charleston, South Carolina, United States, 29425-1600|
|Principal Investigator:||Teresa J Kelechi, PhD, RN||Medical University of South Carolina|