cardiac position, situs, and axis. apex should be pointing to the fetal left. Presence of right vetricle. equal size ventricles and atria, an intraventricular septum that appears uninterrupted. normal placement of the tricuspid and mitral valves. normal rhythm and rate (120-160BPM), show views of ventricular outflow tracks when feasible.
These criteria are used to assess the fetal heart.