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Evaluating the Effects of Hormone Replacement Therapy on Brain Function (The WHIMS-MRI Study) — WHIMS-MRI  

Stroke Clinical Trial

Official title:
Effects of Hormone Therapy on Subclinical Neurological Pathology-The WHIMS-MRI Collaborative Study

Clinical Trial Summary

A silent stroke is a type of stroke that does not produce any severe symptoms, but may slightly affect memory or thinking abilities. Women who take hormone replacement therapy (HRT) may have a higher risk of experiencing a silent stroke than women who do not use HRT. This study will use magnetic resonance imaging (MRI) to determine the prevalence of silent strokes and other changes in brain tissue in women who participated in the Women's Health Initiative Memory Study (WHIMS), a study in which women received HRT, either as estrogen alone or as estrogen and progesterone combined, or placebo.

Clinical Trial Description

A silent stroke is a type of stroke that occurs as a result of blockage in the small blood vessels in the brain. Older adults, in particular, are at risk for silent strokes. This type of stroke does not cause any of the typical stroke symptoms, such as vision problems, facial numbness, or walking difficulties; however, subtle changes in a person's cognitive ability or memory may occur following a silent stroke. It is important to diagnose this type of stroke because several occurrences of silent strokes can increase the risk of having a more serious, and possibly fatal, stroke. As women go through menopause, many choose to take HRT to relieve common menopausal symptoms, including hot flashes and mood swings. Unfortunately, the use of HRT may place women at higher risk of experiencing a silent stroke. This study will assess whether women who take HRT, either as estrogen alone or as estrogen and progesterone combined, have a greater risk of silent stroke than women who do not take HRT. Study researchers will also examine changes in brain tissue and changes in the areas of the brain associated with thinking and memory. This study will enroll women who are participating in the WHIMS study. Participants will attend one study visit at which time a brain MRI scan will be completed. Study researchers will analyze participants' study data from the WHIMS study and the Women's Health Initiative Study of Cognitive Aging (WHISCA) study, an ancillary WHIMS study that examined the effects of HRT on memory and cognition. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00739869
Study type Observational
Source National Heart, Lung, and Blood Institute (NHLBI)
Contact
Status Completed
Phase
Start date May 2004
Completion date March 2007
View Details
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