Abstract
The treatment of keloids and hypertrophic scars remains a challenge. Although triamcinolone acetonide (TAC) is one of the most common and effective treatments for keloids and hypertrophic scars, TAC is not effective in some patients, and some may even experience adverse outcomes. Verapamil might be considered a safe alternative to TAC. The aim of this study was to compare the efficacy and safety of verapamil and TAC for the treatment of keloids and hypertrophic scars. Three databases (Medline, EMBASE, and CENTRAL database) were electronically searched from 1997 to December 2019. Article selection was limited to randomized controlled trials (RCTs) and controlled clinical trials (CCTs). Two authors independently assessed the selection of studies, risk of bias, and extracted the data. Mean differences (MDs) were computed for continuous variables, risk ratios (RRs) were computed for dichotomous variables, and 95% confidence intervals (CIs) were calculated for both assessments. Five RCTs were included, comprising a total of 215 patients (273 scars). Vancouver Scar Scale (VSS) parameters (such as height, vascularity, pliability, and pigmentation) were reported as the outcome measures and provided detailed values in four studies. No significant differences were observed between verapamil and TAC in the reduction of height (MD 0.57, 95% CI -0.94 to 2.08, P = .46), vascularity (MD 0.30, 95% CI -0.42 to 1.02, P = .41), pliability (MD 0.67, 95% CI -1.12 to 2.47, P = .46), and degree of pigmentation (MD 0.14, 95% CI -0.41 to 0.69, P = .61). Adverse outcomes were reported in four studies. The results showed that the incidence of telangiectasia and skin atrophy that used verapamil was significantly lower than that for TAC. Concerning the treatment of keloids and hypertrophic scars, even though verapamil was safer than TAC, TAC worked faster than verapamil. Furthermore, we did not find any clear evidence that verapamil was more or less effective than TAC. Considering the high degree of safety of verapamil, we suggest that verapamil might be used as an alternative treatment when TAC results in adverse outcomes.
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