[Left atrial size in patients with arterial hypertension]

Insights

Arterial hypertension significantly increases left atrial size, a risk factor for atrial fibrillation and stroke. This enlargement is most pronounced in hypertensive patients with obesity or left ventricular hypertrophy, independent of diastolic function.

Area of Science:

  • Cardiology
  • Hypertension Research
  • Echocardiography

Background:

  • Arterial hypertension is linked to increased left atrial size, a known risk factor for atrial fibrillation and stroke.
  • Left atrial size is influenced by factors such as body mass and left ventricular mass.

Purpose of the Study:

  • To determine the prevalence of left atrial enlargement in patients with arterial hypertension, particularly in those who are also obese or have left ventricular hypertrophy.
  • To assess the impact of diastolic function parameters on left atrial dimensions in hypertensive individuals.

Main Methods:

  • Echocardiography was used to examine 93 patients with arterial hypertension and 33 healthy controls.
  • Demographic and clinical data, including body mass index and left ventricular mass, were collected and analyzed.

Main Results:

  • Hypertensive patients exhibited significantly higher body mass index, left ventricular mass, and left atrial size compared to controls.
  • Left atrial enlargement was observed in 44.1% of hypertensive patients, rising to 53.3% with left ventricular hypertrophy and 58.3% with obesity.
  • While diastolic function parameters differed significantly, they did not correlate with left atrial size in hypertensive patients.

Conclusions:

  • Left atrial size is significantly larger in patients with arterial hypertension compared to healthy individuals.
  • Hypertensive patients with left ventricular hypertrophy and obesity show the most substantial left atrial enlargement.
  • Left ventricular diastolic function parameters do not significantly influence left atrial size in patients with arterial hypertension.
Abstract