Accelerated idioventricular rhythm in pregnancy: a case report.

A seventeen-year-old primigravida, without structural heart disease or abnormalities of serum chemistry, presented with complaints of palpitations during the twenty-fourth week of gestation. Holter monitoring revealed long episodes of accelerated idioventricular rhythm. The authors are not aware of similar reports, but this entity may be more common than realized because of the relative infrequency of rhythm monitoring in this particular group.