Figure 1 shows straightforward type I (second-degree) AV block. The QRS complexes do not occur regularly, which immediately rules out third-degree AV block, because in third-degree AV block the escape ...

SAN DIEGO, California — Pregnant women with anti-SSA/Ro autoantibodies at titer levels of less than 1000 ELISA units per mL are at minimal to no risk for fetal atrioventricular (AV) block and may be ...