Gender differences, polypharmacy, and potential pharmacological interactions in the elderly

Area of Science:

• Gerontology
• Clinical Pharmacology
• Public Health

Background:

• Polypharmacy is common in elderly populations.
• Drug-drug interactions (DDIs) pose significant risks to older adults.
• Understanding demographic differences in medication use and DDIs is crucial for patient safety.

Purpose of the Study:

• To investigate pharmacological interactions among elderly patients in Porto Alegre, Brazil.
• To analyze age and gender-specific differences in drug use and interactions.
• To identify common drug classes involved in DDIs within this population.

Main Methods:

• Retrospective analysis of a database from the Institute of Geriatric and Gerontology, Porto Alegre, Brazil.
• Inclusion of 438 elderly patients with data on diseases, therapies, and utilized drugs.
• Classification of drugs using the Anatomical Therapeutic Chemical (ATC) Classification System and assessment of DDIs using Micromedex® Healthcare Series.

Main Results:

• 85.8% of elderly patients used pharmacotherapy; 90.4% of females used drugs.
• Women under 80 used more drugs than men; men over 80 increased drug use.
• 49.2% of women and 32.6% of men experienced at least one DDI; most interactions were moderate and involved common drug classes like ACE inhibitors and diuretics.

Conclusions:

• Elderly patients, particularly women and older individuals, are at high risk for drug-drug interactions.
• Monitoring should consider drug class, gender, age, and nutritional status.
• Close clinical supervision is essential to mitigate risks associated with polypharmacy in the elderly.