Arrhythmia and reduced heart rate variability during pregnancy in women with congenital heart disease and previous reparative surgery.

Objectives: Tachyarrhythmia during pregnancy may have an adverse effect on the mother and the fetus. Heart rate variability (HRV) is a significant marker of autonomic nervous function and may predict tachyarrhythmia. HRV and incidence of arrhythmia in women with repaired congenital heart disease (CHD) during pregnancy were examined.

Left ventricular performance during pregnancy in patients with repaired tetralogy of Fallot: prospective evaluation using the Tei index.

Little is known about the influence of hemodynamic changes on ventricular performance during pregnancy in patients with congenital heart disease. A prospective evaluation was made of 17 pregnancies in 11 women with repaired tetralogy of Fallot (ToF). Twenty age-matched non-pregnant women and 41 stable pregnant women without heart disease were studied as controls.