Calcium-antagonist drugs seem to be safe during pregnancy. They are used for controlling frequency in SVT; however, foetal bradycardia, ventricular auricular block, hypotension and even death have been documented.
Los calcio antagonistas parecen ser seguros en el embarazo, se utilizan para controlar la frecuencia en TSV, sin embargo se ha documentado bradicardia fetal, bloqueo auriculo ventricular, hipotensión, incluso muerte.