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Estrogen replacement therapy: implications for postmenopausal women with end-stage renal disease.

Little information is available about either the potential beneficial or harmful effects of estrogen replacement therapy in postmenopausal women with end-stage renal disease. Although evidence supports a role for estrogen replacement therapy in postmenopausal women in the prevention of cardiovascular disease and bone loss, possible improvement in cognitive function, and the relief of menopausal symptoms, these conclusions may not be applicable to patients with end-stage renal disease, since these studies have generally excluded such women. This issue is of considerable importance since cardiovascular causes account for more than 50% of the all-cause mortality in patients with end-stage renal disease. However, estrogen replacement therapy may also have untoward effects in patients with the disease, including an increased risk of dialysis access thrombosis and potentially worsening coronary artery disease in postmenopausal patients. Furthermore, dosing of estrogens needs to be done carefully since renal excretion is important for the elimination of estrogen metabolites. Low dose or alternate day dosing in addition to monitoring estrogen levels may be warranted when prescribing estrogen replacement therapy to women with end-stage renal disease. In this review, it is our objective to analyze the evidence published in the literature so far and to weigh the risks and benefits of estrogen therapy in postmenopausal women with end-stage renal disease.