BACKGROUND: Uncontrolled hypertension is a leading modifiable risk factor for cardiovascular disease morbidity and mortality. Despite the availability of several effective blood pressure lowering drugs, hypertension control rates remain poor globally. This study aimed to define the level of blood pressure control and to determine the factors associated with poor hypertension control.

METHODS: A hospital-based cross-sectional study was conducted from January to March 2019 at Tikur Anbessa Specialized Hospital among randomly selected 369 patients with hypertension. Data were collected using a pre-tested structured questionnaire. Multivariate binary logistic regression was used to identify determinants of blood pressure control.

RESULTS: The mean (SD) age of the study participants was 55.5 (13.2) years; 188 (50.9%) were males and 28 (7.6%) were active smokers. More than half of the patients (56.0%) were overweight or obese. The most commonly identified comorbidities were diabetes mellitus (48.0%), dyslipidemia (50.9%), and chronic kidney disease (56.1%). The mean (SD) systolic blood pressure was 140.6 (22) mmHg, and diastolic blood pressure was 85.8 (14) mmHg. About two-thirds of the patients (60.2%) had uncontrolled blood pressure. The factors associated with poor blood pressure control with an AOR (95% CI) were increasing age: 1.05 (1.00-1.11), increasing household income: 1.25 (1.04-1.49), being physically inactive: 7.64 (1.14-51.13), chronic kidney disease: 5.36 (1.14-5.16), and use of home blood pressure monitoring: 0.31 (0.102-0.94).

 CONCLUSION: The rate of blood pressure control in patients with hypertension was suboptimal. Age, household income, level of physical activity, chronic kidney disease, and use of home blood pressure monitoring were independent predictors of blood pressure control. It is important to optimize the treatment of hypertension in this high-risk group by implementing effective strategies.

KEYWORDS: Hypertension, blood pressure control, tertiary hospital, Ethiopia