[Echocardiographic associations with renal function in hypertensive individuals treated at primary care level]

Fernando Alberto Costa Cardoso da Silva1, Vinícius José da Silva Nina, Alcione Miranda Dos Santos

  • 1Hospital Universitário, Universidade Federal do Maranhão, São Luis, MA, Brazil.

Insights

Microalbuminuria and reduced glomerular filtration rate in hypertensive patients are linked to detrimental changes in left ventricular structure and diastolic function, including increased wall thickness and mass.

Area of Science:

  • Cardiology
  • Nephrology
  • Hypertension Research

Background:

  • Hypertension is associated with cardiac complications.
  • Microalbuminuria (MA) and impaired glomerular filtration rate (GFR) are indicators of cardiovascular risk.
  • These factors can lead to structural and functional changes in the left ventricle (LV).

Purpose of the Study:

  • To investigate the correlation between MA and GFR with LV parameters.
  • To assess changes in LV geometry and function using echocardiography in hypertensive patients.

Main Methods:

  • Cross-sectional study of 220 hypertensive patients (age > 18).
  • Assessment of sociodemographic data, 24-hour urine MA, GFR, and echocardiographic LV parameters.
  • Patients grouped based on MA and GFR levels.

Main Results:

  • Hypertensive patients with MA showed increased LV wall thickness, LV mass indexed for body surface area (BSA), and relative wall thickness (RWT).
  • These patients also exhibited altered diastolic function, indicated by lower E' waves and higher E/e' ratio.
  • Reduced GFR (< 60 mL/min/1.73 m²) was similarly associated with increased LV wall thickness, LV mass, and impaired diastolic function.
  • Left ventricular concentric hypertrophy was significantly related to MA.

Conclusions:

  • MA is significantly associated with increased LV wall thickness, LV mass, and diastolic dysfunction.
  • Left ventricular concentric hypertrophy is linked to MA in hypertensive individuals.
  • GFR is also associated with cardiac structural changes and diastolic dysfunction, highlighting its clinical relevance.
Abstract

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