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Blood pressure in a Scottish town
Insights
A health screening found 15.6% of adults aged 45-64 had high diastolic blood pressure. Many cases of hypertension were previously undetected, impacting public health resources.
Area of Science:
- Public Health
- Epidemiology
- Cardiovascular Health
Background:
- General health screening surveys are crucial for identifying population health trends.
- Blood pressure measurement is a key indicator of cardiovascular health.
- Hypertension prevalence impacts healthcare resource allocation.
Purpose of the Study:
- To assess the prevalence of hypertension in a general adult population.
- To identify previously undetected cases of hypertension.
- To understand the implications for National Health Service resources.
Main Methods:
- Blood pressure screening of 3,001 adults aged 45-64.
- Analysis of general practitioner medical records for hypertension diagnosis and treatment.
- Follow-up examination of subjects with elevated blood pressure.
Main Results:
- 15.6% of subjects had diastolic blood pressure ≥ 100 mm Hg.
- 21.2% of all examined subjects had prior evidence of hypertension.
- A significant number of hypertension cases were previously undetected.
Conclusions:
- Undetected hypertension is prevalent in the general population.
- Effective screening and management are vital for public health.
- Resource allocation for the National Health Service needs to consider hypertension prevalence.
Abstract:
As part of a general health screening survey in the Burgh of Renfrew blood pressure was measured in 3,001 subjects (78.8% of those eligible) aged 45 to 64. In 468 (15.6%) diastolic blood pressure was 100 mm Hg or more. A year later the mean blood pressure for those of the population re-examined showed no change, there being an equal number of subjects with increased and decreased pressures. The prognostic significance of those showing the larger fluctuations remains to be determined through medical-record linkage.Examination of the general practitioners' medical records of 422 of the 468 subjects with diastolic blood pressure of 100 mm Hg or more showed that 255 had no previous documented hypertension. Of the remainder 73 were receiving antihypertensive therapy. Examination of the records of subjects whose blood pressure was under 100 mm Hg showed that 55 were receiving antihypertensive treatment and that another 113 had previously been recorded as having a diastolic blood pressure of 100 mm Hg or more by their general practitioner. Altogether at least 636 (21.2%) of those who were examined had been considered at some time to have evidence of hypertension.The prevalence of undetected hypertension in the general population has important implications for the resources of the National Health Service if current trials show benefit to the health of the community from treating "mild" as well as "moderate" hypertension.