Caregivers at risk for health problems

November 28, 2011, Virginia Tech
Tina Savla, assistant professor of human development at Virginia Tech, is lead author and corresponding author on the article, "Effects of Daily Stressors on the Psychological and Biological Well-being of Spouses of Persons With Mild Cognitive Impairment." Credit: Virginia Tech Photo

When a person with mild cognitive impairment is agitated or restless, caregivers can expect to find they are more edgy as well. According to research conducted at Virginia Tech, the more a caregiver's day is disrupted by the unsettled behaviors of their loved one, the more they find themselves unable to meet or balance their own home and family work loads. This heightens the effect of elevated stress levels on their own bodies, placing caregivers at risk for current and future health problems.

Mild cognitive impairment (MCI), a transitional stage between normal age-related and early stages of Alzheimer's disease, is characterized by changes in memory that may not interfere with everyday activities but can cause frustration and anxiety among persons with the impairment and their family members.

Results of the team's research, reported in the November Journals of Gerontology Series B: Psychological Sciences and Social Sciences, particularly note the involvement of rising cortisol levels in caregiver samples. Cortisol is a hormone produced by the body as the outside stress it is subjected to increases.

"Providing support for a relative encountering often requires significant changes in everyday roles and responsibilities," said lead author Tina Savla (http://www.humandevelopment.vt.edu/savla.html), assistant professor of human development in the College of Liberal Arts and Human Sciences. "These changes take a toll on family relationships and , and carry consequences for the care partner's physical health."

According to Savla, "Dealing with the day-to-day issues of living with a person with MCI can allow little time for recovery and may tax one's hypothalamic-pituitary-adrenal (HPA) system. The in this system likely contributes to illnesses by further distressing the cardiovascular, metabolic, and ."

In order to compile study data, Savla's team made phone calls to 30 spouse care partners on seven consecutive days to find out how their time had been spent that day, interactions with their spouse and other family members, and their mood as well as their spouse's mood and behavior throughout the day. Saliva samples were also collected from the caregivers on four study days to measure cortisol levels.

The team discovered that when behavioral problems escalated, typically during the late afternoon and early evening hours, caregivers found it necessary to cut back on or ignore their own scheduled chores, leaving a backlog of unfinished business and increasing caregiver frustration and distress. This effect was further multiplied when negative interactions with their partners increased as a result, and fewer positive interactions took place.

Difficulties and reactions reported during the daily inter¬views were confirmed by assaying saliva for cortisol, a stress-related hormone. Savla suggests that caregivers "are having stress reactions that may put them at greater risk for physical health problems." Her research team found elevated throughout the day with a slower rate of decline, typically linked with other diseases.

"The care partner-to-caregiver trajectory is po¬tentially long in duration and continuously challenging in scope," said Savla. "Helping caregivers learn effective stress management techniques early on may be particularly beneficial for their physical health and psychological well-being, thus enhanc¬ing their capacity to continue providing assistance to and care for the person with cognitive impairment over the long term."

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