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Atrial Remodeling in Pregnant Hypertensive Women: Comparison between Chronic and Gestational Hypertension

Anna Vittoria Mattioli1, Sonia Pennella, Fabrizio Demaria

  • 1Department of Biomedical Science, University of Modena and Reggio Emilia, Modena, Italy.

The Open Cardiovascular Medicine Journal
|March 21, 2012
PubMed

Insights

Hypertension during pregnancy, particularly chronic hypertension, leads to significant left atrial (LA) enlargement. This increased LA volume in pregnant women is linked to more clinical complications and hemodynamic instability.

Area of Science:

  • Cardiology
  • Obstetrics
  • Hypertension Research

Background:

  • Left atrial (LA) enlargement is common in hypertensive patients.
  • Limited data exists on LA changes during pregnancy in hypertensive women.
  • Understanding LA remodeling in pregnancy is crucial for managing hypertensive disorders.

Purpose of the Study:

  • To evaluate left atrial (LA) size and function in pregnant women with hypertension.
  • To compare LA changes between chronic hypertension and gestational hypertension.
  • To assess the correlation between LA volume and clinical complications.

Main Methods:

  • Serial echocardiography was performed on 30 chronic hypertension, 30 gestational hypertension, and 16 normotensive pregnant women.
  • LA diameters, volumes, conduit volume, and emptying volumes were measured at 12 and 24 weeks of gestation and postpartum.
  • Patients were categorized based on maximal LA volume index (LAV Index) > 32 ml/m² at 24 weeks.

Main Results:

  • Chronic hypertension patients exhibited significantly larger LA diameters and volumes compared to gestational hypertension patients.
  • Median maximal LAV Index was higher in chronic hypertension (32 ± 6.2 ml/m²) versus gestational hypertension (26 ± 5 ml/m²).
  • Elevated LAV Index (> 32 ml/m²) correlated with increased clinical complications, including therapy adjustments, fluid retention, and hospitalization.

Conclusions:

  • Chronic hypertension causes more significant left atrial (LA) volume increase and remodeling in pregnant women compared to gestational hypertension.
  • Dilated LA volumes serve as a potential indicator of hemodynamic instability during pregnancy.
  • LA dilation is associated with a higher incidence of clinical complications in hypertensive pregnancies.
Abstract

Keywords:
Hypertensionleft atriumpregnancywomen.

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