Serotonin syndrome associated with polypharmacy in the elderly

Area of Science:

• Pharmacology
• Clinical Medicine
• Geriatrics

Background:

• Serotonergic agents are increasingly prescribed alone and in combination.
• Polypharmacy is common, especially in elderly patients.
• Serotonin syndrome is a potentially serious condition associated with serotonergic activity.

Observation:

• A case of serotonin syndrome is presented in a 79-year-old male patient.
• The patient was concurrently taking mirtazapine, venlafaxine, and quetiapine.
• This combination involved direct and indirect serotonin agonists.

Findings:

• Serotonin syndrome can arise from the combination of multiple serotonergic agents.
• Atypical antipsychotics (e.g., quetiapine) can act as indirect serotonin agonists.
• Elderly individuals may be more susceptible to adverse drug events like serotonin syndrome.

Implications:

• Increased vigilance for serotonin syndrome is necessary with combined serotonergic agent use.
• Healthcare providers should carefully review medication regimens, especially in the elderly.
• Avoiding unnecessary polypharmacy is crucial for patient safety and preventing adverse drug reactions.