Physiologically assessed hot flashes and endothelial function among midlife women

Thurston, R. C.; Chang, Y.; Barinas-Mitchell, E.; Jennings, J. R.; von Känel, Roland; Landsittel, D. P.; Matthews, K. A. (2018). Physiologically assessed hot flashes and endothelial function among midlife women. Menopause - the journal of the North American Menopause Society, 25(11), pp. 1354-1361. Lippincott Williams & Wilkins 10.1097/gme.0000000000001239

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OBJECTIVE: Hot flashes are experienced by most midlife women. Emerging data indicate that they may be associated with endothelial dysfunction. No studies have tested whether hot flashes are associated with endothelial function using physiologic measures of hot flashes. We tested whether physiologically assessed hot flashes were associated with poorer endothelial function. We also considered whether age modified associations. METHODS: Two hundred seventy-two nonsmoking women reporting either daily hot flashes or no hot flashes, aged 40 to 60 years, and free of clinical cardiovascular disease, underwent ambulatory physiologic hot flash and diary hot flash monitoring; a blood draw; and ultrasound measurement of brachial artery flow-mediated dilation to assess endothelial function. Associations between hot flashes and flow-mediated dilation were tested in linear regression models controlling for lumen diameter, demographics, cardiovascular disease risk factors, and estradiol. RESULTS: In multivariable models incorporating cardiovascular disease risk factors, significant interactions by age (P < 0.05) indicated that among the younger tertile of women in the sample (age 40-53 years), the presence of hot flashes (beta standard error = -2.07 0.79, P = 0.01), and more frequent physiologic hot flashes (for each hot flash: beta standard error = -0.10 0.05, P = 0.03, multivariable) were associated with lower flow-mediated dilation. Associations were not accounted for by estradiol. Associations were not observed among the older women (age 54-60 years) or for self-reported hot flash frequency, severity, or bother. Among the younger women, hot flashes explained more variance in flow-mediated dilation than standard cardiovascular disease risk factors or estradiol. CONCLUSIONS: Among younger midlife women, frequent hot flashes were associated with poorer endothelial function and may provide information about women's vascular status beyond cardiovascular disease risk factors and estradiol.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DCR Unit Sahli Building > Forschungsgruppe Neurologie
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology

UniBE Contributor:

von Känel, Roland

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1072-3714

Publisher:

Lippincott Williams & Wilkins

Language:

English

Submitter:

Panagiota Milona

Date Deposited:

31 Jan 2019 16:59

Last Modified:

04 Dec 2019 04:31

Publisher DOI:

10.1097/gme.0000000000001239

PubMed ID:

30358732

BORIS DOI:

10.7892/boris.124789

URI:

https://boris.unibe.ch/id/eprint/124789

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