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What does impedance cardiography add more to the assessment of left ventricular diastolic function in essential

Paweł Krzesiński1, Grzegorz Gielerak1, Adam Stańczyk1

  • 1Department of Cardiology and Internal Diseases, Central Clinical Hospital of the Ministry of National Defense, Military Institute of Medicine, Warsaw, Poland.

Polski Merkuriusz Lekarski : Organ Polskiego Towarzystwa Lekarskiego
|January 24, 2016
PubMed

Insights

Left ventricular diastolic dysfunction (LVDdf) in hypertensive patients is linked to altered hemodynamics, including reduced stroke index and increased arterial stiffness. Impedance cardiography effectively evaluates these changes, with sex influencing outcomes.

Area of Science:

  • Cardiology
  • Hypertension Research
  • Cardiovascular Physiology

Background:

  • Left ventricular diastolic dysfunction (LVDdf) and arterial stiffness are significant predictors of mortality in patients with arterial hypertension.
  • Understanding the relationship between diastolic function and hemodynamic parameters is crucial for managing hypertensive individuals.

Purpose of the Study:

  • To investigate the association between left ventricular diastolic function and the hemodynamic profile in hypertensive patients.
  • To assess the utility of impedance cardiography (ICG) in evaluating these relationships.

Main Methods:

  • A study involving 209 hypertensive patients.
  • Evaluations included clinical assessment, echocardiography (measuring e', E/A), and impedance cardiography (ICG) to assess stroke index (SI), acceleration index (ACI), velocity index (VI), Heather index (HI), and total arterial compliance.
  • Analysis focused on correlations between echocardiographic indices and hemodynamic parameters.

Main Results:

  • LVDdf was associated with lower SI, VI, ACI, HI, and higher systemic vascular resistance index (SVRI).
  • These associations were more pronounced in males, with significant correlations observed between age, VI, SVRI, and diastolic function indices.
  • No significant differences in age, blood pressure, BMI, or sex distribution were found between groups, but sex-specific hemodynamic differences were noted.

Conclusions:

  • Impedance cardiography is a valuable tool for assessing impaired left ventricular performance and arterial stiffness in hypertensive patients.
  • Sex-specific differences in cardiovascular hemodynamics and ventricular-vascular interactions should be considered in therapeutic strategies for hypertension.
Abstract

Keywords:
hypertensionimpedance cardiographyleft ventricular functionvascular stiffness

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