Cardiovascular adaptation to pregnancy is more marked in twin than singleton pregnancies and may result in a higher rate of adverse cardiac events in women with heart disease. The objective was to test the hypothesis that women with heart disease and a twin pregnancy have a higher rate of adverse cardiac events.
\nRegistry Of Pregnancy And Cardiac disease (ROPAC) is a prospective (2007–2018), global registry of pregnant women with heart disease. Pregnancy outcomes in twin (n=96) were compared with 5643 women with singleton pregnancies. At baseline, twin mothers were older (32.1 vs 29.5 years, p<0.001) and had fewer prior cardiac interventions (43% vs 55.5%, p=0.02). Cardiac diagnosis, New York Heart Association class, modified WHO class, country of origin, prior hypertension, diabetes mellitus, atrial fibrillation and signs of heart failure were similar. The risk of heart failure was significantly higher"}