Table 1.
Predictors of primary cardiac events during pregnancy (CARPREG study). Adapted from Siu S et al.5

Table 2.
Predictors of cardiac complication during pregnancy and associated points for risk calculation (ZAHARA study). Adapted from Drethen W et al.7

Table 3.
Cardiac complications during completed pregnancies as calculated by the ZAHARA risk score. Adapted from Drethen W et al.7

Table 4.
Modified World Health Organization Classification of Maternal Cardiovascular Risk. Adapted from the European Society of Cardiology Guidelines on the Management of Cardiovascular Diseases during Pregnancy.8
