| خلاصه مقاله | Background and aim: Nowadays the longevity of the population and the increase in the prevalence
of chronic diseases and their risk factors has emerged the risk of polypharmacy, especially in elders.
Different definitions for polypharmacy are proposed, although the most agreed is the daily intake of
five or more medicines for at least 90 days. Developing countries where most patients with
chronic conditions and multimorbidity live, are at most risk of polypharmacy. However, this issue is
less addressed in these regions. Various adverse health outcomes have also been indicated to be
associated with polypharmacy, such as frailty, falls, drug-drug and disease–drug interactions,
medical dosing errors, decreased quality of life and well-being of patients, lower adherence to
medication, more hospitalization, and higher mortality. This systematic literature review aimed to
investigate the prevalence of polypharmacy in the older above 65 years old population in Iran.
Methods and Materials: We searched PubMed/MEDLINE, Scopus, Embase, and Google Scholar
databases to identify relevant studies published from January 2000. Observational or cohort studies
reporting the prevalence of polypharmacy in the older (+65 years) population were analyzed.
Results: After a systematic literature review, we identified 386 articles. Of those, 23 studies fulfilled
the inclusion criteria. The prevalence of polypharmacy ranged from 1.57% to 53.5 % among elderly
people. Socioeconomic status was not associated with polypharmacy in 16 of the studies. The
majority of studies showed that polypharmacy was higher among females and individuals with more
than two chronic conditions. Seven studies reported a significant association between polypharmacy
with urban living. The most commonly prescribed drugs were medications for the cardiovascular
system, antiacids, anti-hyperlipidemic, blood glucose-lowering, nervous system, supplements,
NSAIDs, and drugs used for musculoskeletal and joint diseases.
Conclusion: This study from a developing country showed a high prevalence of polypharmacy in the
older population. The prevalence of polypharmacy was very different based on the geographical
region of the country, and the population studied. It seems critical to alert healthcare workers about
the magnitude and side effects of polypharmacy in older people to prescribe necessary medications
and prevent unnecessary prescriptions |