Related Experiment Videos
Risk evaluation and therapeutical implications of pulse pressure in primary arterial hypertension
1Klinik für Innere Medizin, MEDIAN Klinikum für Akut- und Rehabilitationsmedizin Bad Krozingen, Germany. gerd.boenner@dgn.de
Insights
Increased pulse pressure is an independent cardiovascular risk factor for all adults. Higher pulse pressure levels significantly elevate risks for heart attack and stroke, particularly in isolated systolic hypertension.
Area of Science:
- Cardiology
- Hypertension Research
- Preventive Medicine
Background:
- Pulse pressure, the difference between systolic and diastolic blood pressure, is increasingly recognized as a critical health indicator.
- Previous studies have suggested a link between pulse pressure and cardiovascular outcomes, but its independent role requires further elucidation.
Purpose of the Study:
- To determine if increased pulse pressure is an independent risk factor for cardiovascular disease.
- To investigate the association of pulse pressure with other cardiovascular markers and outcomes.
- To evaluate the impact of pulse pressure on myocardial infarction and stroke risk.
Main Methods:
- Analysis of data from the Framingham Heart Study and the Multiple Risk Factor Intervention Trial (MRFIT).
- Evaluation of pulse pressure in relation to age, sex, systolic blood pressure, and mean arterial pressure.
- Assessment of correlations with urinary albumin excretion and left ventricular hypertrophy.
Main Results:
- Elevated pulse pressure (over 60-65 mmHg office, 53 mmHg ambulatory) is an independent cardiovascular risk factor across all age groups and sexes.
- Pulse pressure is strongly correlated with systolic blood pressure, especially in isolated systolic hypertension.
- Increased pulse pressure is associated with higher risks of myocardial infarction and stroke, with specific patterns related to mean arterial pressure.
- Urinary albumin excretion and left ventricular hypertrophy are closely linked to pulse pressure.
Conclusions:
- Increased pulse pressure is a significant, independent predictor of cardiovascular events.
- Management strategies targeting systolic blood pressure normalization are likely effective for pulse pressure reduction.
- Diuretics show promise in decreasing pulse pressure, and increases during therapy should be avoided due to heightened cardiovascular risk.
Summary:
Analysis of the results raised in the Framingham and the MRFIT study have clearly shown that increased pulse pressure is an independent cardiovascular risk factor. This is valid for all age groups and both sexes. The risk increases with pulse pressures over 60 - 65 mmHg for office blood pressure and 53 mmHg for 24-h-mean of ambulatory blood pressure. Pulse pressure is strongly correlated with systolic blood pressure and will be highest in case of isolated systolic hypertension. Urinary albumin excretion and left ventricular hypertrophy are closely associated with pulse pressure. With elevated pulse pressure cardiovascular risk is increased 2- to 4-fold in relation to age and endpoint. The risk of myocardial infarction is raised more if pulse pressure is associated with low mean arterial blood pressure while risk of stroke is increased with wide pulse pressure and high mean arterial pressure. The risk of pulse pressure can be seen in normotensives and in early pregnancy. Therapeutic management of pulse pressure will be similar to that of systolic blood pressure, since normalization of systolic blood pressure will also lower or normalize pulse pressure. Results of preliminary studies suggest that diuretics are superior to other drugs in decreasing pulse pressure. An increase of pulse pressure during therapy should be avoided since each 10 mmHg increase in pulse pressure will raise the risk of stroke and myocardial infarction about 24 % and 32 %.