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ABEL RAMIREZ-ESTUDILLO; Correlation between Bleeding Time and Recurring Hemorrhage in vitreous cavity.. Invest. Ophthalmol. Vis. Sci. 2014;55(13):4400.
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To establish a correlation between the bleeding time and the presence of recurring hemorrhage in the vitreous cavity in diabetic patients undergoing vitrectomy.
A cohort study, prospective, longitudinal, observational, analytical was performed. Patients of either sex were included, aged 18 and older, who met criteria for surgical treatment of diabetic retinopathy, who underwent 23-gauge vitrectomy. Complete preoperative laboratory examinations were performed and platelet function tests using bleeding time (Duke Method), prior to performing surgery.
A total of 64 patients were included and divided into two groups: 40 patients with normal bleeding time for the group 1 and 24 patients with abnormal bleeding time for the group 2. The average time in seconds of bleeding for group 1 was 122.45 vs 247.71 seconds for group 2, with a significant statistically difference (p less than 0.001). The vitreous cavity rebleeding occurred in 7.5% of patients in group 1 and in 66.6 % of patients in group 2. The study demonstrated a significant correlation between abnormal time bleeding and the presence of postoperative recurring hemorrhage (p less than 0.001).
Abnormally high bleeding time has a statistically significant correlation with postoperative rebleeding in vitreous cavity. Abnormal bleeding time increases 8.8 times the risk of rebleeding after surgery in diabetic patients undergoing vitrectomy.
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