Reduction noted in heart rate variability during hot flashes

Reduction noted in heart rate variability during hot flashes
Women experiencing hot flashes have a significant reduction in heart rate variability during the hot flash, suggesting a role for the autonomic nervous system, according to a study published in the April issue of Menopause.

(HealthDay) -- Women experiencing hot flashes have a significant reduction in heart rate variability during the hot flash, suggesting a role for the autonomic nervous system, according to a study published in the April issue of Menopause.

Rebecca C. Thurston, Ph.D., from the University of Pittsburgh, and colleagues estimated , an index of cardiac vagal control, using the band-limited variance method. Physiologic and reported and heart rate variability were monitored over a 24-hour period during the daily lives of 21 perimenopausal and , aged 40 to 60 years, reporting daily hot flashes.

The researchers observed a significant decrease in heart rate variability during hot flashes compared to periods before and after. They note that this had previously been observed in the laboratory. The findings were independent of respiratory rate.

"Significant decreases in cardiac vagal control occurred during hot flashes assessed during women's daily lives," Thurston and colleagues conclude, "These findings extend our work in the laboratory to the ambulatory setting, further shedding light on the physiology of hot flashes and underscoring a potential role of parasympathetic function in hot flashes."

More information: Abstract
Full Text (subscription or payment may be required)

add to favorites email to friend print save as pdf

Related Stories

Hot flashes may be fewer in older, heavier women

Aug 31, 2011

A recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM) found that among women aged 60 and above, heavier women have fewer hot flashes than their leaner counte ...

Acupuncture may cool hot flashes

Sep 25, 2006

Researchers at Stanford University are planning further investigation to see if acupuncture can cool the hot flashes of menopausal women.

Hot flashes underreported and linked to forgetfulness

Jun 16, 2008

Women in midlife underreport the number of hot flashes that they experience by more than 40 percent, and these hot flashes are linked to poor verbal memory, according to a study by researchers at the University of Illinois ...

Weight gain linked to hot flashes after breast cancer

Mar 21, 2012

(HealthDay) -- Early-stage breast cancer survivors who gain at least 10 percent of their pre-diagnosis weight are significantly more likely to report hot flashes than those who remain weight stable, according ...

Recommended for you

Time to take notice and tackle heart failure

7 hours ago

Experts have sounded a call to action for policy makers at local, national, and international levels to promote heart failure prevention, improve heart failure awareness among healthcare professionals, ensure ...

Hopes dashed for an agent to prevent reperfusion injury

10 hours ago

The administration of an experimental agent known as TRO40303 to patients who have had a heart attack, with the hope of preventing tissue damage when impaired blood flow is corrected (reperfusion), was disappointingly ineffective ...

User comments