Fetal Arrhythmias Dawn Boender, PGY3 Overview Tachyarrhythmias  Bradyarrhythmias  Fetal Arrhythmias 1% of fetuses  75% extrasystoles  15% tachyarrhythmias  9% bradyarrhythmia  Tachyarrhythmias Tachyarrhythmia Differential Diagnosis  Premature Atrial Contractions  Supraventricular Tachycardia  Atrial Flutter  Sinus Tachycardia  Ventricular Tachycardia  Tachyarrhythmia Making the diagnosis  Brief review…  Tachyarrhythmia Making the diagnosis  M-mode  Align cursor through one atria and ventricle  Visualizes relationship  Distinguishes type of arrhythmias 