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  • Title: Injected hyaluronidase reduces restylane-mediated cutaneous augmentation.
    Author: Vartanian AJ, Frankel AS, Rubin MG.
    Journal: Arch Facial Plast Surg; 2005; 7(4):231-7. PubMed ID: 16027343.
    Abstract:
    OBJECTIVE: To determine the effects of injected hyaluronidase in cutaneous areas previously augmented with Restylane (Q-Med AB, Uppsala, Sweden), a nonanimal, stabilized hyaluronic acid (NASHA) gel. METHODS: A prospective, randomized study was undertaken in 2 parts. First, the effects of hyaluronidase and saline were compared on post-NASHA dermal augmentation. Next, 3 different doses of hyaluronidase were evaluated after NASHA gel dermal augmentation. A blinded evaluator assigned postinjection skin scores. Each patient served as his or her own control. RESULTS: Hyaluronidase dramatically reduced the size of the augmentation created by injected Restylane in all of our subjects. A comparison of average scores of saline-injected sites vs hyaluronidase-injected sites revealed a statistically significant difference. By 4 to 7 days after hyaluronidase injection, skin scores were at 20% of baseline (P<.001). Dose-related response to injected hyaluronidase was also observed, although it was not statistically significant. A number of patients (25%) demonstrated localized, self-limiting hypersensitivity reactions to injected hyaluronidase. CONCLUSIONS: Intradermal hyaluronidase injections can be used to reduce dermal augmentation from previously injected Restylane. A small dose of hyaluronidase equivalent to 5 to 10 U may be injected initially.
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