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Impact of systolic blood pressure on cardiovascular prognosis
W H Birkenhäger1, P W de Leeuw
1Erasmus University, Rotterdam, The Netherlands.
Insights
Systolic blood pressure is emerging as a key risk factor for cardiovascular issues in chronic hypertension, especially in older adults. This contrasts with traditional views focusing on diastolic pressure for hypertensive emergencies.
Area of Science:
- Cardiology
- Hypertension Research
- Epidemiology
Background:
- Historically, diastolic blood pressure was considered the primary risk factor for cardiovascular complications in hypertension.
- This perspective remains relevant for acute hypertensive emergencies like accelerated and malignant hypertension.
Purpose of the Study:
- To investigate the role of systolic blood pressure as an independent risk factor for cardiovascular complications in chronic 'benign' hypertension.
- To evaluate the shift in understanding cardiovascular risk assessment in hypertension.
Main Methods:
- Epidemiological analysis of prospectively studied populations with varying blood pressures.
- Longitudinal follow-up of subgroups with isolated systolic hypertension.
- Review of therapeutic trial outcomes related to blood pressure management.
Main Results:
- Evidence indicates that systolic blood pressure is increasingly associated with distant cardiovascular complications in chronic hypertension.
- Three distinct epidemiological approaches consistently highlight systolic pressure's significance.
Conclusions:
- Systolic blood pressure is poised to become the principal criterion for evaluating hypertension.
- This is particularly relevant for the elderly population, where systolic pressure is a major concern.
Abstract:
Traditionally, diastolic rather than systolic blood pressure has been regarded as the main risk factor for cardiovascular complications in hypertension. While this remains valid for clinical hypertensive emergencies (accelerated and malignant hypertension), it is becoming increasingly clear that the risk of incurring the more distant cardiovascular complications in chronic 'benign' hypertension is associated with the systolic rather than the diastolic component of arterial pressure. Assessment of increased systolic pressure as a risk factor in its own right has been based on three epidemiological approaches. First, the impact of systolic pressure per se was examined by statistical evaluation of prospectively studied populations with different blood pressures. Second, selected subgroups with 'isolated' systolic hypertension were followed up. A third assessment was based on the results of therapeutic trials. All three assessments confirm that systolic pressure is likely to become the main criterion in the evaluation of hypertension, particularly in the elderly.