Effect of hormone replacement therapy on anti-thrombin III activity in post menopausal women

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Abstract
Anti-thrombin III is the major inhibitor of activated blood clotting factors. We studied 320 patients with climacteric symptoms who received estrogen replacement therapy to assess the effect of hormone therapy on Anti-thrombin III (AT-III) activity. Of the 320 patients 80 patients received Prempak C (0.625 mg) for 2 years, 82 patients received Prempak C (1.25 mg) for 2 years, 78 patients received Cycloprogynova (1 mg) for 2 years and the remaining 80 patients received Cycloprogynova (2 mg) for 2 years. The mean AT-III activity before, during and 3 months after treatment showed no significant difference in all the four groups of patients. There was no incidence of myocardial infarction or stroke or thrombo-embolic disease in this group of 320 patients receiving estrogen replacement therapy.