Central aortic blood pressure assessment and cardiovascular risk
1Dallas Nephrology Associates, University of Texas, Southwestern Medical Center, Dallas, TX 75235, USA. ramv@dneph.com
Insights
Central aortic pressure, not brachial, may better reflect cardiovascular disease and guide hypertension treatment. Measuring central pressure could improve therapeutic efficacy assessment and patient outcomes.
Area of Science:
- Cardiovascular Medicine
- Hypertension Research
- Diagnostic Accuracy
Background:
- Peripheral brachial blood pressure (BP) may inaccurately reflect cardiovascular disease.
- Antihypertensive treatments with similar brachial BP effects can differ in central aortic pressure impact.
- This discrepancy can lead to misjudging treatment efficacy.
Purpose of the Study:
- To evaluate the clinical significance of central aortic pressure versus brachial BP.
- To determine the predictive value of central BP for cardiovascular risk and outcomes.
- To explore the potential of central aortic pressure measurement in hypertension management.
Main Methods:
- Review of clinical studies comparing brachial and central aortic BP measurements.
- Analysis of data correlating BP measurements with cardiovascular risk and clinical outcomes.
- Assessment of discrepancies between peripheral and central BP readings in patient populations.
Main Results:
- Central aortic pressure provides a more accurate representation of degenerative cardiovascular changes.
- Many individuals with normal brachial BP exhibit high-normal central aortic pressure.
- Central aortic pressure is a stronger predictor of cardiovascular risk and clinical outcomes than brachial BP.
Conclusions:
- Central aortic pressure measurement may be superior to peripheral assessments for cardiovascular risk stratification.
- Current antihypertensive treatment strategies may need re-evaluation based on central BP effects.
- Measuring central aortic pressure could represent a significant advancement in managing hypertension.
Abstract:
Peripheral brachial blood pressure measurements may not provide an accurate representation of degenerative changes that characterize cardiovascular disease. Evidence is mounting that antihypertensive treatment strategies with apparently similar effects on brachial blood pressure may have different effects on central aortic pressure, which in turn may lead to overestimation or underestimation of therapeutic efficacy. The relative importance of central and brachial blood pressure for predicting cardiovascular risk and clinical outcomes has been examined in several clinical studies. These studies have reported that a large proportion of individuals considered to have normal blood pressure values based on brachial systolic pressures had high-normal blood pressure based on central aortic pressure measurements. As additional evidence suggesting the superiority of central aortic pressure over peripheral assessments becomes more abundant, measurement of central aortic pressure may be the next important advancement in the management of hypertension.
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Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.