Lack of the effect of topical vitamin K on bruising after mechanical injury  R.K Kovács, MD, L Bodai, A Dobozy, MD, PhD, DSC, L Kemény, MD, PhD, DSC  Journal.

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Lack of the effect of topical vitamin K on bruising after mechanical injury  R.K Kovács, MD, L Bodai, A Dobozy, MD, PhD, DSC, L Kemény, MD, PhD, DSC  Journal of the American Academy of Dermatology  Volume 50, Issue 6, Pages 982-983 (June 2004) DOI: 10.1016/j.jaad.2004.01.057

Fig 1 The effect of 1-week treatment with vitamin K cream or placebo on capillary resistance (CR). A, Before treatment (vitamin K). B, Before treatment (placebo). C, After treatment (vitamin K). D, After treatment (placebo). There is a nonsignificant difference in the values of CR on both forearms (CRbefore: 27 kPa, CRafter: 28 kPa, n = 10, pvitaminK = .087, pplacebo = .104). Journal of the American Academy of Dermatology 2004 50, 982-983DOI: (10.1016/j.jaad.2004.01.057)

Fig 2 The number of induced petechiae after application of 40 kPa vacuum on the forearms of the patients. There was a slight but not significant difference in the number of petechiae between the vitamin K and placebo-treated sites on days 1, 2, and 3 (n = 10, p1 = .116; p2 = .072; p3 = .213). Journal of the American Academy of Dermatology 2004 50, 982-983DOI: (10.1016/j.jaad.2004.01.057)