Complete heart block in a fetus associated with maternal Sjögren's syndrome.

This report illustrates the case of a fetus who was diagnosed by M-mode echocardiography, at the twentieth week of gestation, as having a complete heart block. The mother had a positive antinuclear antibody test result with antibodies directed against the Ro (SSA) and La (SSB) antigen system consistent with the diagnosis of Sjögren's syndrome. Management and outcome of the pregnancy are discussed.