Accelerated resolution of laser-induced bruising with topical 20% arnica: a rater-blinded randomized controlled trial.
Br J Dermatol
; 163(3): 557-63, 2010 Sep.
Article
em En
| MEDLINE
| ID: mdl-20412090
ABSTRACT
BACKGROUND:
Dermatological procedures can result in disfiguring bruises that resolve slowly.OBJECTIVES:
To assess the comparative utility of topical formulations in hastening the resolution of skin bruising.METHODS:
Healthy volunteers, age range 21-65 years, were enrolled for this double (patient and rater) blinded randomized controlled trial. For each subject, four standard bruises of 7 mm diameter each were created on the bilateral upper inner arms, 5 cm apart, two per arm, using a 595-nm pulsed-dye laser (Vbeam; Candela Corp., Wayland, MA, U.S.A.). Randomization was used to assign one topical agent (5% vitamin K, 1% vitamin K and 0·3% retinol, 20% arnica, or white petrolatum) to exactly one bruise per subject, which was then treated under occlusion twice a day for 2 weeks. A dermatologist not involved with subject assignment rated bruises [visual analogue scale, 0 (least)-10 (most)] in standardized photographs immediately after bruise creation and at week 2.RESULTS:
There was significant difference in the change in the rater bruising score associated with the four treatments (anova, P=0·016). Pairwise comparisons indicated that the mean improvement associated with 20% arnica was greater than with white petrolatum (P=0·003), and the improvement with arnica was greater than with the mixture of 1% vitamin K and 0·3% retinol (P=0·01). Improvement with arnica was not greater than with 5% vitamin K cream, however.CONCLUSIONS:
Topical 20% arnica ointment may be able to reduce bruising more effectively than placebo and more effectively than low-concentration vitamin K formulations, such as 1% vitamin K with 0·3% retinol.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Arnica
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Contusões
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Preparações de Plantas
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Emolientes
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Fitoterapia
Tipo de estudo:
Clinical_trials
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Etiology_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Br J Dermatol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos