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Related Experiment Videos

Left ventricular circumferential function in patients with essential hypertension.

M Przewlocka-Kosmala1, W Kosmala, W Mazurek

  • 1Cardiology Department, Medical University, Wroclaw, Poland. kosmw@kard.am.wroc.pl

Journal of Human Hypertension
|June 2, 2006
PubMed
Summary

Essential hypertension in patients shows increased left ventricular (LV) circumferential systolic function, possibly as a compensation for impaired longitudinal systolic performance. Diastolic function is also reduced in hypertensive individuals.

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Area of Science:

  • Cardiology
  • Cardiovascular Imaging
  • Hypertension Research

Background:

  • Essential hypertension is a major risk factor for cardiovascular disease.
  • Left ventricular (LV) function assessment is crucial for managing hypertensive patients.
  • Tissue Doppler imaging (TDI) offers detailed myocardial function analysis.

Purpose of the Study:

  • To investigate left ventricular (LV) systolic and diastolic circumferential myocardial function in patients with essential hypertension using TDI.
  • To compare LV function between hypertensive patients and healthy controls.
  • To explore correlations between LV function parameters and structural changes in hypertension.

Main Methods:

  • Echocardiographic study with TDI in 102 hypertensive patients and 33 controls.

Related Experiment Videos

  • Analysis of peak systolic (Sm), early diastolic (Em), and late diastolic (Am) velocities.
  • Assessment of LV longitudinal (L) and circumferential (C-AS, C-P) function parameters.
  • Correlation analysis with LV mass index (LVMI), interventricular septum (IVS), and posterior wall (PW) thickness.

    • Main Results:

    • Hypertensive patients exhibited increased LV circumferential systolic function (higher C-AS-Sm).
    • Impaired LV circumferential diastolic function was observed (lower C-AS-Em, C-P-Em, Em/Am ratios).
    • LV longitudinal systolic (decreased L-Sm) and diastolic (decreased L-Em, L-Em/Am) dysfunction were also noted.
    • LVMI, IVS, and age independently predicted circumferential systolic function; LVMI predicted longitudinal systolic function.

    Conclusions:

    • Hypertensive patients demonstrate enhanced LV circumferential systolic function, potentially a compensatory mechanism.
    • LV diastolic function, both circumferential and longitudinal, is impaired in essential hypertension.
    • TDI is valuable for detecting subtle functional changes in hypertensive cardiomyopathy.