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As the care of women with congenital heart disease improves and mean maternal age rises, the prevalence of pregnant women with heart disease has been increasing. To predict maternal cardiac complications from limited baseline maternal characteristics, clinicians have used the validated Cardiac Disease in Pregnancy (CARPREG) risk score. Canadian researchers sought to prospectively investigate pregnancy complications in women with heart disease while seeking to update the risk score.
The data covered 1938 consecutive pregnancies in women with heart disease receiving care in two tertiary-care hospitals; 64% involved congenital heart disease. Adverse cardiac events occurred in 16% of pregnancies; maternal death or cardiac arrest was exceedingly …