Evaluation of systolic properties in hypertensive patients with different degrees of diastolic dysfunction and normal

Sebastiano Sciarretta1, Francesco Paneni, Giuseppino M Ciavarella

  • 1Cardiology Department, II School of Medicine, University of Rome La Sapienza, S. Andrea Hospital, Rome, Italy.

Insights

Hypertension can cause early, preclinical systolic dysfunction even with normal ejection fraction and diastolic impairment. This reduction in systolic properties worsens with the severity of diastolic dysfunction.

Area of Science:

  • Cardiology
  • Cardiovascular Physiology
  • Hypertension Research

Background:

  • Left ventricular diastolic dysfunction (DD) in hypertensive patients with preserved ejection fraction (EF) is often viewed as isolated diastolic impairment.
  • Systolic and diastolic functions are interconnected, suggesting potential early systolic abnormalities in severe DD.
  • This study investigates preclinical systolic property changes in hypertensive individuals with varying degrees of DD and preserved EF.

Purpose of the Study:

  • To assess left ventricular (LV) systolic properties using multiparametric echocardiography in hypertensive patients with preserved EF and different degrees of diastolic dysfunction.
  • To determine if isolated DD is associated with early, preclinical reductions in LV systolic function.
  • To explore the relationship between the severity of DD and the extent of systolic property impairment.

Main Methods:

  • Evaluated 1,073 hypertensive subjects with EF >55% and no overt heart disease.
  • Categorized patients into normal diastolic function (N), delayed relaxation (DR), and pseudonormal filling (PN) patterns.
  • Utilized multiparametric echocardiography to assess various LV systolic indexes, including stroke volume, stroke work, midwall shortening, and tissue Doppler systolic velocity.

Main Results:

  • While most patients with DD (DR, PN) had normal systolic indexes, they showed significant reductions in stroke volume, stroke work, EF, midwall shortening, and tissue Doppler systolic velocity compared to the normal group.
  • The pseudonormal filling (PN) group exhibited the most pronounced reductions in systolic properties.
  • Post-adjustment analysis confirmed a significant relationship between reduced LV systolic indexes and the presence and severity of DD, particularly the PN pattern.

Conclusions:

  • LV systolic and diastolic properties are interrelated in hypertensive patients with normal EF.
  • Early, preclinical reductions in systolic properties occur in patients with "isolated" DD, and these deficits correlate with the degree of diastolic dysfunction.
  • These findings challenge the concept of isolated DD and highlight the systemic impact of hypertension on LV function.
Abstract

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