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  • Title: Inhibition of intraocular fibrin formation after infusion of low-molecular-weight heparin during combined phacoemulsification-trabeculectomy surgery.
    Author: Zarei R, Azimi R, Moghimi S, Abdollahi A, Amini H, Eslami Y, Fakhraii G.
    Journal: J Cataract Refract Surg; 2006 Nov; 32(11):1921-5. PubMed ID: 17081897.
    Abstract:
    PURPOSE: To evaluate the effect of intraocular infusion of dalteparin, a low-molecular-weight heparin (LMWH) administered in the infusion fluid to prevent early postoperative fibrin formation in combined phacoemulsification-trabeculectomy surgery (phacotrabeculectomy). SETTING: Farabi Eye Hospital, Tehran, Iran. METHODS: Standard combined phacotrabeculectomy was performed prospectively in a masked fashion in 60 eyes; 35 eyes received 5 IU/mL LMWH in the infusate and 25 eyes served as controls. Masked postoperative examinations assessed visual acuity, intraocular pressure (IOP), anterior chamber cell and flare, and fibrin formation with slitlamp examinations 1, 3, 7, 30, and 90 days after surgery. RESULTS: The rate of intraocular fibrin/membrane formation was significantly lower in the LMWH group than in the control group at each follow-up (P<.001, Student t test) . The amount of IOP was lower in LMWH group at each follow up (P<.01, Student t test). Final visual acuity was better in LMWH group (P = .03, Student t test). The frequency of synechia formation was lower in the LMWH group on day 90 (P = .002, chi-square test). CONCLUSIONS: Infusion of dalteparin, a LMWH, may be an effective inhibitor of postoperative fibrin formation in phacotrabeculectomy surgery. It may reduce the frequency of synechia formation and improve visual acuity. It may not be associated with increased risk for intraoperative or postoperative complications at the tested dose. This drug may be a useful adjunct in combined surgery.
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