EVOLUTION OF THE FETAL ATRIOVENTRICULAR (AV) INTERVAL FROM 6-40 WEEKS OF GESTATION

Fetal atrioventricular (AV) conduction can be indirectly assessed by measuring the Doppler-derived AV interval (AVI) at fetal echocardiography. Normal values have been published from 16-18 weeks gestational age (GA) to term. We sought to investigate the evolution of the AV interval from 6 to 40