The burden of hypertension in the emergency department and linkage to care: A prospective cohort study in Tanzania

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Abstract

Objectives Globally, hypertension affects one billion people and disproportionately burdens low-and middle-income countries. Despite the high disease burden in sub-Saharan Africa, optimal care models for diagnosing and treating hypertension have not been established. Emergency departments (EDs) are frequently the first biomedical healthcare contact for many people in the region. ED encounters may offer a unique opportunity for identifying high risk patients and linking them to care. Methods Between July 2017 and March 2018, we conducted a prospective cohort study among patients presenting to a tertiary care ED in northern Tanzania. We recruited adult patients with a triage blood pressure 140/90 mmHg in order to screen for hypertension. We explored knowledge, attitudes and practices for hypertension using a questionnaire, and assessed factors associated with successful follow-up. Hypertension was defined as a single blood pressure measurement 160/100 mmHg or a three-time average of 140/90 mmHg. Uncontrolled hypertension was defined as a three-time average measurement of 160/100 mmHg. Successful follow-up was defined as seeing an outpatient provider within one month of the ED visit. Results We enrolled 598 adults (mean age 59.6 years), of whom 539 (90.1%) completed the study. The majority (78.6%) of participants were aware of having hypertension. Many (223; 37.2%) had uncontrolled hypertension. Overall, only 236 (43.8%) of participants successfully followed-up within one month. Successful follow-up was associated with a greater understanding that hypertension requires lifelong treatment (RR 1.11; 95% CI 1.03,1.21) and inversely associated with greater anxiety about the future (RR 0.80; 95% CI 0.64,0.99). Conclusion In a northern Tanzanian tertiary care ED, the burden of hypertension is high, with few patients receiving optimal outpatient care follow-up. Multi-disciplinary strategies are needed to improve linkage to care for high-risk patients from ED settings.

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Galson, S. W., Stanifer, J. W., Hertz, J. T., Temu, G., Thielman, N., Gafaar, T., & Staton, C. A. (2019). The burden of hypertension in the emergency department and linkage to care: A prospective cohort study in Tanzania. PLoS ONE, 14(1). https://doi.org/10.1371/journal.pone.0211287

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