Fig. 2.

Risk stratification tools and models for the assessment of maternal cardiac morbidity and mortality during pregnancy: Cardiac Disease in Pregnancy Study (CARPREG) II [33], modified World Health Organization (WHO) [34], and ZAHARA (Zwangerschap bij Aangeboren HARtAfwijkingen [Pregnancy in Women with Congenital Heart Disease]) [35]. AS aortic stenosis, ASD atrial septal defect, AV atrioventricular, HCM hypertrophic cardiomyopathy, LV left ventricle, LVEF left ventricular ejection fraction, LVOTO left ventricular outflow tract obstruction, MS mitral stenosis, MVP mitral valve prolapse, NYHA New York Heart Association, PAC premature atrial contraction, PAH pulmonary arterial hypertension, PDA patent ductus arteriosus, PPCM peripartum cardiomyopathy, PS pulmonic stenosis, PVC premature ventricular contraction, RV right ventricle, TAPVR total anomalous pulmonary vein return, TOF tetralogy of Fallot, VSD ventricular septal defect