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Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
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[Comparison between the central and brachial blood pressure values in patients with hypertension undergoing

Bruno Bordin Pelazza1, Cesar Augusto Saldanha Rosa, Sebastião Rodrigues Ferreira Filho

  • 1UFU. (Intensive Care Unit Nurse Coronary/General ICU).

Jornal Brasileiro De Nefrologia
|October 27, 2012
PubMed

Insights

Central aortic systolic pressure and pulse pressure measurements are significantly higher than brachial artery readings in hypertensive individuals aged 50 and older, indicating age-related arterial changes.

Area of Science:

  • Cardiovascular Physiology
  • Geriatric Medicine
  • Hypertension Research

Background:

  • Arterial elasticity decreases with age, leading to increased systolic blood pressure (SP) and pulse pressure (PP).
  • Aortic root systemic arterial pressure (SAP) is a more accurate predictor of cardiovascular mortality than brachial SAP.

Purpose of the Study:

  • To compare central (aortic root) SAP with brachial SAP in hypertensive patients across different age groups.
  • To assess the impact of aging on the discrepancy between central and brachial blood pressure measurements.

Main Methods:

  • Evaluated central and brachial SAP using the oscillometric method in 244 hypertensive patients.
  • Patients were stratified into five age groups: 39-49, 50-59, 60-69, 70-79, and over 80 years old.

Main Results:

  • Central SP was significantly higher than brachial SP in patients aged 50 and older.
  • Central PP was significantly greater (11-15 mmHg) than brachial PP in all patients over 50.
  • No significant difference in diastolic pressure between central and brachial measurements was found, except in the 60-69 age group.

Conclusions:

  • Central aortic SP and PP values are superior to brachial artery measurements in older hypertensive individuals.
  • These significant differences in central versus brachial pressure measurements begin from age 50 onwards.
Abstract

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