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Updated: Jul 7, 2026

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment
Published on: August 7, 2017
Alzheimer Disease: "It's okay, Mama, if you want to go, it's okay"
Ann C Hurley1, Ladislav Volicer
1Center for Excellence in Nursing Practice, Brigham and Women's Hospital and School of Nursing, Bouve College of Health Sciences, Northeastern University, Boston, MA 02115, USA. Ahurley@partners.org
Abstract:
About 4 million people in the United States have Alzheimer disease (AD) and the number of incident cases is expected to more than double from 377,000 in 1995 to 959,000 in 2050. Patients, their families, and health care professionals struggle with a relentless and irreversible neurological syndrome that can last from 2 to 20 years. Alzheimer disease causes both cognitive and functional impairments that predispose the patient to behavioral symptoms, destroy intellectual capacity and personality, erase the ability to communicate one's wishes for care, and lead to life-threatening consequences. At the close of life, family members and clinicians face decisions regarding degrees of intensive medical care to be provided for treatment of the late-stage consequences of AD, including withdrawal of invasive interventions, initiation of hospice, and treatment of a range of progressive medical conditions. Physicians can assist patients with AD and their loved ones through the terminal phases of the illness by preparing them for the relentless progression of the disease and by supporting them through the intellectual and emotional conflicts accompanying the end of life.
Insights
Alzheimer disease (AD) affects millions, causing irreversible cognitive and functional decline. Physicians can guide patients and families through end-of-life care decisions during the terminal stages of this progressive neurological condition.
Area of Science:
- Neurology
- Geriatrics
- Public Health
Background:
- Alzheimer disease (AD) is a progressive neurological disorder affecting millions in the US.
- The number of AD cases is projected to significantly increase in the coming decades.
- AD presents complex challenges for patients, families, and healthcare providers.
Observation:
- AD leads to irreversible cognitive and functional impairments.
- Patients experience behavioral symptoms, personality changes, and loss of communication.
- The disease duration can range from 2 to 20 years, culminating in life-threatening consequences.
Findings:
- End-of-life care for AD patients involves difficult decisions regarding medical interventions and hospice.
- Physicians play a crucial role in preparing patients and families for the disease's progression.
- Support is vital for navigating the emotional and intellectual challenges at the end of life.
Implications:
- Improved understanding of AD progression aids in proactive end-of-life planning.
- Enhanced physician-patient communication can alleviate distress during terminal phases.
- Healthcare systems need to support families facing complex care decisions for AD patients.
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