Screening for Hypertension in Adults of a Northern Delta Province in Vietnam.

Background: The proportion of people with hypertension is increasing, and those affected are relatively younger. Worldwide, it is estimated that people with high blood pressure are more than 1.5 billion people. In Vietnam, from 2002 to 2008, according to a national survey on hypertension and its risk factors within the prevention and control of cardiovascular disease program, the prevalence of hypertension was 25.1%. This is alarming because high blood pressure can cause serious complications, including death.

Objective: The study aimed to explore the blood pressure characteristics and hypertension prevalence in adults in a northern delta province of Vietnam, and describe some risk factors in hypertensive subjects screened through the program.

Methods: This was a cross-sectional study collecting data from people aged 18 years or older in 10 cantons and the city of Nam Dinh from July 15th to July 31st, 2020. Using semi-automatic OMRON sphygmomanometers, sitting blood pressure was measured three times according to standardized methods specified by the Ministry of Health and two National Vascular Societies.

Results: Blood pressure screening of 183,632 adults included 84,438 males, which accounted for 45.98%, with an average age of 60.36 ± 13.18 years. The estimated prevalence of hypertension was 27.20% (95% CI: 27.00% - 27.41%). The older the age, the higher the rate of hypertension in both sexes; the prevalence of hypertension over 65 years was 45.36%. Hypertension grade 1 accounted for 17.14%, followed by hypertension at grade 2 at 6.69%, and grade 3 at 1.15%; notably, the percentage of prehypertension accounted for 49.64%. The percentage of treated hypertension in Nam Dinh province was 56.85%, but the percentage of uncontrolled hypertension was 85.63%.

Conclusion: The prevalence of hypertension in Nam Dinh province was relatively high (27.20%), although the number of treated patients was also high (56.85%); moreover, the proportion of uncontrolled hypertension remained extremely high (85.63%). Local campaigns and suitable interventions are required to detect hypertension in the early stages and increase awareness for treatment in the population.