ABSTRACT
Abnormal impulse generation and conduction Fetal arrhythmias may present as an irregularity of the cardiac rhythm, as an abnormally slow or fast heart rate, or as a combination of irregular rhythm and abnormal heart rate. The contributing causes can be broadly divided into abnormalities in the generation and/or conduction of electrical impulses. 4-7 These disturbances result from acute or chronic critical alterations in the electrical activity of the cardiac myocyte and may occur in every region of the heart.
