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Managing delirium among elderly people
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Managing delirium among elderly people

Treating the underlying issue and creating a friendly environment can help in treating the syndrome

Delirium is common among the elderly. Treating the underlying issue and creating a friendly environment can help in its treatment.

For a change that day, the 78-year-old woman woke up to her favourite music — and not the usual long beeping sound from the ICU monitor. The effect was near-instantaneous: the woman, who had been quiet since her admission to the Hyderabad hospital, was suddenly joyous.

While dealing with elderly patients in an ICU, a scene like this is not rare as it is part of the treatment for people with delirium, a syndrome caused due to a sudden change in the brain resulting in mental confusion, say doctors.


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Manjula (name changed) was admitted for pneumonia in December, 2022. Speaking about her case, Dr M Sringala Devijan, consultant, Critical Care Medicine, Kamineni Hospitals, Hyderabad, says that she was on ventilator for two days when they started noticing her being lethargic and sleeping excessively.

“In an ICU setting, delirium is common among the elderly and about two out of three people experience it. It’s often picked up and identified by the nurses and critical care doctors,” says Dr Devijan.

Signs and symptoms of delirium

“Delirium has a sudden onset (hours or days) with a brief and fluctuating course. Irrespective of the cause, people present with a similar pattern of signs and symptoms,” says Dr Vikas Gaur, head, department of Psychiatry, Amrita Hospital, Faridabad, while listing out the signs: 

  • Disturbance in attention and awareness.
  • Disturbance in cognition.
  • Disorganisation of thoughts.
  • Perceptual disturbances, such as illusions and hallucinations.
  • Disturbance in sleep (such as fragmented sleep at night).
  • Mood alterations.
  • Psychomotor hyperactivity or hypoactivity.

Subtypes of delirium

Dr Gaur says that there are three subtypes of delirium: hypoactive, hyperactive and mixed. “The hypoactive form is commonly present in the elderly which is characterised by decreased alertness, slow speech, lethargy and slow body movements. Hyperactive delirium may present with hypervigilance, restlessness, fast speech, irritability, aggression, mood changes and disturbed thoughts,” he explained.

Manjula’s case was that of hypoactive delirium, says Dr Devijan. He says, “She didn’t want to interact with anyone and asked us not to disturb her. She was close to her family and was depressed after being separated. We created a friendly environment involving her family and showed photos of her relatives and friends to bring her joy and hope.”

Stating an example of hyperactive delirium, Dr Devijan said that a 66-year-old man with a thigh bone fracture was shifted to the ICU postoperatively when he became aggressive and refused to get treated. “He was never hospitalised before and couldn’t sleep due to pain and sound of the monitor in the ICU. After shifting him to a regular ward and letting his family stay with him, he recovered,” Dr Devijan added.

Dr Devijan also said that in case of mixed delirium, people show characteristics of both hypoactive and hyperactive delirium.

delirium in older people

What causes delirium?

Dr Devijan says that several things could affect the brain and result in delirium as there is no single cause for it.

“Advanced age is a major risk factor for the development of delirium,” says Dr Gaur.

Dr Gaur lists out some common causes for delirium other than old age:

  • Surgeries, especially hip fractures, hip replacements and heart surgeries.
  • Disorders of the central nervous system like dementia, stroke, infarction, tumors and infections.
  • Electrolyte disturbances resulting in vomiting, diarrhea and dehydration.
  • Multiple medication, a new medication, an abrupt increase in dosage, drug interactions, over-the-counter drugs, alcohol, cannabis, opium, etc.
  • Benzodiazepine (psychoactive drugs) or alcohol withdrawal.
  • Infections, especially urinary or respiratory tract infections.
  • Constipation or problems with urination.
  • Heart diseases such as myocardial infarction and lung disease.

Treatment of delirium

According to Dr Gaur, once the causative factors are identified and treated, the symptoms of delirium subside over a three-to-seven-day period. However, in some cases, delirium can take days or even months to completely resolve.

  • Nonpharmacological treatment: Involves reorientation and behavioural intervention.
  • Pharmacological treatment: Certain antipsychotic medicines are prescribed.

Takeaways

Tips for caregivers:

  • The primary goal in treating delirium is to treat the underlying cause.
  • As changes in the environment lead to delirium, creating a friendly environment can help in its treatment.
  • People with delirium are accident-prone and hence should be monitored.
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