Beyond Blood Pressure: Arterial Stiffness as a Hemodynamic and Neuroadrenergic Axis Linking Hypertension, Cardiac...

Arterial stiffness has traditionally been interpreted as a marker of vascular ageing and cumulative blood pressure exposure. Increasing evidence, however, indicates that it should be viewed as an active determinant of cardiovascular loading conditions rather than a passive epiphenomenon. By accelerating pulse wave velocity and altering the timing of wave reflection, large artery stiffening increases central systolic pressure, augments late systolic load, and facilitates the transmission of pulsatile energy to the microcirculation. These hemodynamic alterations shape ventricular remodeling, influence ventricular-vascular coupling, and contribute to organ vulnerability even when brachial blood pressure appears adequately controlled. In this review, population-based observations and mechanistic human studies are integrated to position arterial stiffness as a stage-dependent dimension of cardiovascular disease. Community data illustrate its association with different blood pressure phenotypes and early cardiac structural changes, whereas evidence from advanced heart failure settings helps contextualize arterial stiffness within states of marked autonomic activation. Taken together, this perspective suggests that arterial stiffness is not merely a marker of cumulative damage, but a mediator that contributes to disease progression across clinical stages and, in practical terms, a phenotyping dimension along the trajectory from hypertension to heart failure.