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Dementia treatments linked with serious side effects: Study

3 weeks ago 19

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dementia Credit: CC0 Public Domain

Several antipsychotic treatments given to patients with dementia have been linked to serious side effects including heart failure, a study published Thursday has found.

"Antipsychotic use in people with dementia is associated with... a wide range of serious adverse outcomes including stroke, , heart attack, , fracture, pneumonia, and ," according to the study published in the British Medical Journal (BMJ).

Scientists found that the highest risks occur when treatment begins, "underscoring need for increased caution in early stages of treatment".

The antipsychotics—risperidone, quetiapine, haloperidol and olanzapine—are usually prescribed to patients with such as schizophrenia.

They are also used to treat depression that is particularly resistant to other medications, as well as to treat patients suffering from dementia, such as Alzheimer's disease.

Antipsychotics do not cure these illnesses but are intended to calm certain symptoms such as .

The treatments are highly controversial due to the serious side-effects and their limited efficiency.

In France, as in the UK where the BMJ study was carried out, only risperidone and haloperidol are authorized to treat symptoms of dementia.

However, the BMJ states that the study is "observational" and that no "firm conclusions can be drawn about cause and effect".

It is possible that in some cases, the side-effect of pneumonia may be favored over onset dementia.

Several neurologists praised the study at a time when antipsychotics are experiencing a resurgence in prescriptions since the COVID pandemic.

There "is a risk therefore that patients might be prescribed harmful antipsychotics simply because trained staff who can safely manage their behavior are not sufficiently available," neurologist Dr. Charles Marshall said, noting, however, that treatments may be justified in rare cases.

More information: Multiple adverse outcomes associated with antipsychotic use in people with dementia: population based matched cohort study, The BMJ (2024). DOI: 10.1136/bmj-2023-076268

© 2024 AFP

Citation: Dementia treatments linked with serious side effects: Study (2024, April 20) retrieved 20 April 2024 from https://medicalxpress.com/news/2024-04-dementia-treatments-linked-side-effects.html

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