Factors associated with global longitudinal strain decline in hypertensive patients with normal left ventricular

Nabila Soufi Taleb Bendiab1,2, Abderrahim Meziane-Tani1,2, Souhila Ouabdesselam2,3

  • 11 Department of Cardiology, Faculty of Medicine Aboubekr Belkaid University Hospital Tlemcen, Tlemcen, Algeria.

Insights

Early detection of left ventricular (LV) dysfunction in high blood pressure (HBP) patients is possible using global longitudinal strain (GLS). Reduced GLS indicates early impairment, linked to uncontrolled HBP, diabetes, and LV hypertrophy.

Area of Science:

  • Cardiology
  • Echocardiography
  • Hypertension Research

Background:

  • Early detection of left ventricular (LV) dysfunction risk factors is crucial for managing high blood pressure (HBP).
  • Assessing LV global longitudinal strain (GLS) via speckle-tracking echocardiography offers a potential method for early detection.

Purpose of the Study:

  • To investigate the association between reduced LV global longitudinal strain (GLS) and various risk factors in patients with high blood pressure (HBP).
  • To identify predictors of impaired LV function in an HBP outpatient clinic population.

Main Methods:

  • Two-dimensional Doppler-coupled echocardiography with speckle-tracking to determine LV GLS in 200 HBP patients.
  • Analysis of patient demographics, comorbidities (diabetes, dyslipidemia, overweight), HBP control, LV hypertrophy (LVH), and diastolic dysfunction.

Main Results:

  • Reduced GLS (>-17%) was observed in 45.5% of patients.
  • Univariate analysis linked lower GLS to longer HBP duration, uncontrolled BP, overweight, diabetes, dyslipidemia, renal failure, increased Cornell index, LVH, remodeling, and filling pressures.
  • Multivariable analysis confirmed associations between reduced GLS and HBP duration, uncontrolled BP, diabetes, LVH, and increased filling pressures.

Conclusions:

  • Early impairment of LV function, indicated by reduced GLS, is prevalent in HBP patients.
  • Reduced GLS is significantly associated with long-standing, uncontrolled HBP, metabolic changes, and LVH.

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