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  • JAMA study links...

JAMA study links Delirium with long term cognitive decline

Written By : Dr. Kamal Kant Kohli Published On 2020-07-14T09:17:41+05:30  |  Updated On 18 July 2020 10:25 AM IST
JAMA study links Delirium with long term cognitive decline
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Researchers at Columbia University Vagelos College of Physicians and Surgeons have found in a new meta-analysis of 24 observational studies that delirium may cause significant long-term cognitive decline.

The findings have been published in JAMA Neurology.

Delirium is the most common surgical complication in adults older than 65. It is also observed in patients with critical illnesses, such as sepsis, respiratory failure, and most recently some cases of COVID-19.

"Delirium is associated with a variety of complications, ranging from patient and family stress, increased hospital costs, increased duration of hospital stay, escalation of care, and increased mortality and morbidity including institutionalization," said Terry Goldberg, PhD a professor of medical psychology (in psychiatry) and anesthesiology at Columbia University Vagelos College of Physicians and Surgeons who led the current study. "In our study, we discovered it had longer term effects as well."

According to this study, a patient who experiences an episode of delirium were more than twice as likely to show significant long-term cognitive decline than a patient who did not experience delirium.

Researchers from Columbia University Irving Medical Center conducted a systematic review and analysis of 24 observational studies to determine if delirium was associated with increases in cognitive impairment or dementia incidence at least three months after the patient experienced an episode of delirium and found that patients who experienced delirium demonstrated significantly greater cognitive decline than those patients who did not experience such an episode.

The researchers also examined whether delirium unmasks cognitive decline in those individuals who were already compromised and on a downward trajectory or whether delirium may potentially cause cognitive decline. They developed several specific analyses to arbitrate between these hypotheses including examining studies that included only non-cognitively impaired individuals at baseline, examining studies that included only cognitively impaired participants and determining the association of the proportion of delirium-present subjects with cognitive outcome. The researchers found consistent evidence that delirium was causative in decline.

From a public health standpoint, it is important that we develop better strategies for addressing outcomes related to delirium, as it is associated with increases in mortality, long-term cognitive decline and the cost of care. said Dr. Goldberg. "Assuming that delirium occurs in about 20% of those 11.8 million case of individuals older than 65 years who are hospitalized per year, costs attributable to delirium may be between $143 billion and $152 billion owing to longer hospital stays, outpatient visits, nursing home care, and rehabilitation," said Dr. Goldberg. "And with evidence pointing toward patients with COVID-19 experiencing delirium in ICUs, it is vital that we gain a better understanding of how to help these individuals, as more people than ever are at risk for cognitive decline."

For further reference log on to:

JAMA Neurol. Published online July 13, 2020.doi:10.1001/jamaneurol.2020.2273

Deliriumlong term cognitive declinecognitioncognitive health
Source : JAMA neurology
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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