Forms of dementia, including Alzheimer's disease, gradually affect your cognitive function by harming your memory and your ability to think and make decisions. By 2050, experts project that 13.8 million older adults in the United States will develop Alzheimer's disease and related Dementias (ADRD). Although Alzheimer's disease is the most common form of dementia, other forms include Lewy Body dementia, frontotemporal dementia, and vascular dementia--all of which have upsetting consequences for people with dementia and their families.
Since no cure or treatment yet exists for ADRD, healthcare providers currently focus on preventing the treatable risk factors that can lead to dementia. This strategy could potentially slow the onset and progression of ADRD.
Hospitalization poses risks to people with ADRD and can have life-threatening consequences, including predisposing us to delirium (the medical term for a rapid change in mental state, often marked by confusion), a decline in mental or physical function, being admitted to long-term care facilities, and even death.
In particular, delirium can worsen the course of an illness, quicken physical and mental decline, lengthen hospital stays, and cause higher rates of hospital re-admission and death. One in 8 hospitalized people with ADRD who develops delirium will have at least one serious problem, including cognitive decline, possibly leading to admission to long-term care or death.
Here's the good news: Experts say 30 to 40 percent of delirium cases are preventable. But until now, we have not studied how delirium and its severity affect hospitalized older adults with and without ADRD.
Recently, researchers published findings from a related study, the Better Assessment of Illness (BASIL) study, in the Journal of the American Geriatrics Society. They created the study to examine delirium, severe delirium, and its aftermath.
The researchers enrolled 352 patients between 2015 and 2017. Patients were 70 years old or older and admitted or transferred to Beth Israel Deaconess Medical Center (BIDMC) in Boston as either emergency or elective (arranged in advance) admissions. The average age of participants was 80 and the majority of participants had at least one chronic health condition.
Eighty-five participants (24 percent) were diagnosed with likely ADRD when they entered the study. Participants with ADRD were slightly older than those without ADRD. The study continued for 12 months.
The researchers reported that 25 percent (88 out of 352) participants experienced delirium. Among the 85 participants with ADRD, 45 percent experienced delirium, compared to 19 percent of participants without ADRD who did not experience delirium. For all patients, severe delirium increased the risk of being placed in a nursing home. Patients with ADRD had more severe delirium.
The researchers concluded that their study strongly suggests the need to prevent delirium, particularly severe delirium, in patients both with and without ADRD. Targeted strategies such as the AGS CoCare: HELP™ (formerly the Hospital Elder Life Program), have shown that certain approaches can help prevent delirium or make it less severe.
Called "low-tech, high-touch" interventions, these techniques include helping to orient people to where they are and what time it is, preserving the sleep-wake cycle, helping people be mobile as soon as possible, making sure they're well hydrated, and correcting any vision or hearing problems. All these strategies have been shown to prevent delirium and mental and physical decline in older patients both with and without ADRD.
The AGS CoCare: HELP® protocols include ways to adapt strategies for patients with ADRD. The researchers say their study suggests that using techniques to prevent delirium will help to prevent death related to hospitalizations in those with ADRD.
They also suggest that future studies focusing on preventing delirium, specifically in older adults with ADRD, are needed.
This summary is from "Does Alzheimer's Disease and Related Dementias Modify Delirium Severity and Hospital Outcomes?". It appears online ahead of print in the Journal of the American Geriatrics Society. The study authors are Tammy T. Hshieh, MD, MPH; Tamara G. Fong, MD, PhD; Eva M. Schmitt, PhD; Edward R. Marcantonio, MD, SM; Guoquan Xu, MD, PhD; Yun R. Gou, MA; Thomas G. Travison, PhD; Eran D. Metzger, MD; Richard N. Jones, ScD; and Sharon K. Inouye, MD, MPH, for the BASIL Study Group.
About the Health in Aging Foundation
This research summary was developed as a public education tool by the Health in Aging Foundation. The Foundation is a national non-profit established in 1999 by the American Geriatrics Society to bring the knowledge and expertise of geriatrics healthcare professionals to the public. We are committed to ensuring that people are empowered to advocate for high-quality care by providing them with trustworthy information and reliable resources. Last year, we reached nearly 1 million people with our resources through HealthinAging.org. We also help nurture current and future geriatrics leaders by supporting opportunities to attend educational events and increase exposure to principles of excellence on caring for older adults. For more information or to support the Foundation's work, visit http://www.HealthinAgingFoundation.org.
About the Journal of the American Geriatrics Society
Included in more than 9,000 library collections around the world, the Journal of the American Geriatrics Society (JAGS) highlights emerging insights on principles of aging, approaches to older patients, geriatric syndromes, geriatric psychiatry, and geriatric diseases and disorders. First published in 1953, JAGS is now one of the oldest and most impactful publications on gerontology and geriatrics, according to ISI Journal Citation Reports®. Visit wileyonlinelibrary.com/journal/JGS for more details.
About the American Geriatrics Society
Founded in 1942, the American Geriatrics Society (AGS) is a nationwide, not-for-profit society of geriatrics healthcare professionals that has--for 75 years--worked to improve the health, independence, and quality of life of older people. Its nearly 6,000 members include geriatricians, geriatric nurses, social workers, family practitioners, physician assistants, pharmacists, and internists. The Society provides leadership to healthcare professionals, policymakers, and the public by implementing and advocating for programs in patient care, research, professional and public education, and public policy. For more information, visit AmericanGeriatrics.org.
Journal of the American Geriatrics Society