Prevalent influence of systolic over pulse pressure on left ventricular mass in essential hypertension

Area of Science:

• Cardiology
• Hypertension Research
• Vascular Physiology

Background:

• Elevated pulse pressure is linked to increased left ventricular mass, suggesting arterial stiffness.
• The precise role of pulse pressure versus other blood pressure components in this association remains unclear.

Purpose of the Study:

• To investigate the independent contribution of systolic blood pressure and pulse pressure to left ventricular mass in untreated hypertension.
• To determine the primary determinant of left ventricular mass among blood pressure components.

Main Methods:

• Analysis of echocardiography and 24-h ambulatory blood pressure monitoring data from 2545 untreated hypertensive subjects.
• Multiple regression analysis adjusted for age, gender, body weight, and hypertension duration.
• Comparative modeling to assess the explanatory power of different blood pressure components on left ventricular mass.

Main Results:

• Left ventricular mass increased with all measured blood pressure components, with stronger associations observed with ambulatory than office readings.
• Systolic blood pressure explained a greater proportion of left ventricular mass variability compared to other components after adjustments.
• In multivariate models, 24-h systolic blood pressure alone, or combined with diastolic or mean blood pressure, adequately accounted for left ventricular mass variability. Pulse pressure lost significance when analyzed with systolic blood pressure.

Conclusions:

• The association between pulse pressure and left ventricular mass is primarily mediated by systolic blood pressure.
• Systolic blood pressure is the main determinant of left ventricular mass in essential hypertension.