Polypharmacy in a hospitalized psychiatric population: risk estimation and damage quantification

Area of Science:

• Psychiatry
• Clinical Pharmacology
• Health Services Research

Background:

• Polypharmacy is common in psychiatric settings, increasing risks of drug interactions and side effects.
• Between 10-40% of psychiatric inpatients receive multiple antipsychotics.
• Adherence to treatment is often compromised by polypharmacy.

Purpose of the Study:

• To determine the prevalence of polypharmacy in psychiatric inpatients.
• To evaluate adverse effects linked to psychotropic drug use.
• To assess specific risks associated with polypharmacy in this population.

Main Methods:

• A retrospective, longitudinal study analyzed 140 discharged psychiatric patients.
• Data included sociodemographics, diagnoses, drug prescriptions, and adverse reactions.
• Statistical analyses included Odds Ratios, Pearson's correlation, t-tests, Mann Whitney U, and regression models.

Main Results:

• The average patient used 7.8 drugs, with 4.07 being psychotropic medications.
• 81.4% of patients exhibited polypharmacy (≥6 drugs), with a 5-fold increased risk of secondary effects.
• Polypharmacy with antipsychotics increased the risk of extrapyramidal symptoms by over two-fold.

Conclusions:

• High polypharmacy rates persist in psychiatric hospitals despite guidelines.
• Polypharmacy negatively impacts tolerability, adherence, and increases healthcare costs due to longer hospital stays.
• This highlights the need for more judicious psychotropic prescribing practices.