The systemic arterial hypertension (SAH) is an important risk factor for the development of cardiovascular diseases, enhancing the importance of prevalence studies of this disease. Nevertheless, there is a shortage of these studies in our state, as well as in Brasil. Objective: investigate the prevalence of systemic arterial hypertension in Vila de Algodoal, municipal district of Maracanã, Pará state. Casuistic and methods: this is a population-based transversal study, from December 2006 to April 2007, whose study population was constituted by all the persons with fixed residence in Vila de Algodoal, with equal or superior age to 18 years. Results: the analysis of the referring data to the 432 individuals who took part in the research revealed a prevalence of arterial hypertension of 22.9% (95% CI: 22.86 – 22.96). Among the masculine sex was of 23.14% (95% CI: 23.07 – 23.21) and among the female sex was of 22.68% (95% CI: 22.61 – 22.75). In the hypertensive group, 50.5%belonged to the masculine sex. The prevalence of SAH according to the age was higher among persons aged 80 years old or older: 83.3%. It was identified that 62.6% of hypertensive patients did not have previous knowledge of this situation. Among individuals that knew they were hypertensive, 78.4% were adherent to anti-hypertensive medications use and 29.7% showed controlled blood pressure levels. Regarding the risk factors investigated, the results are described below:
Obesity or overweight (p=0.00)
Alcohol ingestion (p=0.054)
Smoke (tobacco) (p=0.98)
Family history of SAH (p=0.09)
Food conservation in salt (p=0.42)
Presence of risk factor Yes No Yes No Yes No Yes No Yes No
Prevalence of SAH 35.3% 15.1% 19.2% 27.5% 23.3% 22,8% 22.3% 10.4% 28.0% 20.8%
Conclusion: the prevalence of SAH found was 22.9%. Among the hypertensive group, 50.5%
belonged to the masculine sex and 62.6% did not have previous knowledge of this disease.
Among individuals that knew they were hypertensive, 78.4% were adherent to anti hypertensive medications use and 29.7% showed controlled blood pressure levels. Regarding
the risk factors investigated the group with SAH higher prevalence was represented by obese
or overweight persons, with a prevalence of 35.3% (OR=3.07; CI 95%: 1.94 – 4.88).
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