Complete Congenital Atrioventricular Block Found by Ultrasound in Pregnancy

Abstract

A 27-year-old woman at 7 months of pregnancy presented to the obstetric emergency department with a history of fetal bradycardia for 3 days. Her vital signs were within normal limits. Autoimmune disease screening revealed positive antinuclear antibodies and weakly positive anti–Sjögren's syndrome A antibodies. Color Doppler ultrasound of the fetal 4-chamber view showed low pulse rates, mitral regurgitation, and increased cardiothoracic ratio (Video E1 [available at http://www.annemergmed.com]), which might have certain clinical significance.