It is not usual for the fetus to have an irregular heart beat (cardiac arrhthmia) during pregnancy. More often than not it is a benign condition, though it requires further tests when it is observed. There are several different arrhythmias, and most pose no problem to the fetus:
Simple Arrhythmias: 
<ul>
<li>Premature atrial contraction (PAC)</li>
<li>Premature ventricular contraction (PVC)</li>
<li>Sinus tachycardia (ST)</li>
<li>Sinus bradycardia (SB)</li>
<li>Premature atrial contraction blocked</li>
</ul>
Potentially Fatal:&nbsp;
<ul>
<li>Atrioventricular block (A-V)&nbsp;</li>
<li>Supraventricular tachycardia (SVT)</li>
<li>Atrial flutter (AF)</li>
<li>Nodal tachycardia</li>
<li>Complex arrhythmias</li>
</ul>

Most pregnancies are uneventful and without complications. However, one of the reasons of attending prenatal care is that there may be some medical complications that increase risks in pregnancy. There are many potential <a href="http://www.babymed.com/complications/high-risk-pregnancy-conditions-complications">medical complications in pregnancy</a> including preterm births, high blood presure, and diabetes.&nbsp;

Complications

It is not usual for the fetus to have an irregular heart beat (cardiac arrhthmia) during pregnancy. More often than not it is a benign condition, though it requires further tests when it is observed.

Fetal Cardiac Arrhythmia

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