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Left Ventricular Diastolic Function During the Normal Peripartum Period.

Yuki Kimura1, Takao Kato2, Hiromi Miyata3

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Left ventricular diastolic function in pregnant women decreases slightly after delivery but remains within normal limits. This change is associated with hypertensive disorders in pregnancy and correlates with age and left ventricular mass index.

Keywords:
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Area of Science:

  • Cardiology
  • Obstetrics
  • Physiology

Background:

  • Cardiovascular function and hemodynamics significantly change during pregnancy.
  • Understanding these changes is crucial for maternal and fetal health.
  • Left ventricular (LV) diastolic function is a key indicator of cardiac health.

Purpose of the Study:

  • To investigate left ventricular (LV) diastolic function in pregnant women.
  • To assess changes in LV diastolic function from late pregnancy to postpartum.
  • To identify factors associated with alterations in diastolic function.

Main Methods:

  • Prospective collection of data from 397 pregnant women.
  • Echocardiographic evaluation of LV systolic and diastolic function in the 3rd trimester and postpartum.
  • Analysis of cardiac geometry, including relative wall thickness and LV mass index (LVMI).

Main Results:

  • LV systolic function was preserved in all participants.
  • Diastolic function significantly decreased after delivery (mean e': 12.6 vs. 11.6 cm/s; median E/e' ratio: 6.4 vs. 7.3).
  • Postpartum diastolic function was associated with hypertensive disorders in pregnancy (HDP) and correlated with age and LVMI.

Conclusions:

  • Left ventricular diastolic function declines postpartum in pregnant women.
  • These changes, however, remain within the normal physiological range.
  • Only a minimal prevalence (0.3%) of LV diastolic dysfunction was observed after delivery.