Rate of Polypharmacy and Its Determinants Among Older Adult Cardiovascular Patients at Hiwot Fana Comprehensive Specialized Hospital in Eastern Ethiopia.

ABSTRACT

Background: Understanding the rate of polypharmacy in cardiovascular patients is crucial because of its increasing occurrence and its association with potentially inappropriate prescribing practices and negative health outcomes, particularly among elderly individuals with cardiovascular conditions. According to the best of the literature search knowledge, the magnitude of polypharmacy and associated factors were not known among older cardiovascular patients in eastern Ethiopia. Objective: The aim of this study was to assess the rate of polypharmacy and its determinants among older adult cardiovascular patients at Hiwot Fana Comprehensive Specialized Hospital in eastern Ethiopia. Methods: A cross-sectional study design was undertaken, involving a cohort of 364 individuals aged 65 years and older who were receiving follow-up care for cardiovascular disease. A data abstraction sheet was used to gather the data. The convenience sampling technique was employed. To identify factors related to the rate of polypharmacy, multivariable logistic regression analysis was employed. Results: The analysis included the medical records of 325 patients, revealing a polypharmacy prevalence rate of 20.7%. Individuals who were 77 years of age or older had a 1.12 times higher likelihood of having polypharmacy than individuals who were 65 to 70 years old. The presence of comorbidities along with cardiovascular diseases was a significant factor related to polypharmacy. Polypharmacy was prevalent among individuals with a larger number of comorbidities. Conclusions: This study reported that 1 in 5 cardiovascular patients at a chronic care clinic experienced polypharmacy. Age (≥77 years), having comorbidities, number of comorbid diseases (≥3), duration of cardiovascular disease (≥5 years), and number of years taking cardiovascular drugs (≥5) were associated with higher odds of polypharmacy. Health care providers should be cautious about prescribing multiple medications to this population. Training in the prevention of inappropriate polypharmacy is crucial to reducing the trend of polypharmacy and its associated burden.