Fetal atrial load and prognosis assessed by a new index in magnetocardiography

FFetal magnetocardiogram (FMCG) is a non-invasive recording of faint magnetic signals produced by electrical activity of the fetal heart, and thus has been applied to various prenatal diagnoses in fetal cardiology especially in the diagnoses of fetal arrhythmia. However information on amplitudes of FMCG components has rarely been examined. In this study, we evaluated the P wave of FMCG of fetuses complicated by congenital heart diseases using a new quantitative index in FMCG, modified DIrot (mDIrot), at P wave. We recorded 2-min FMCG from 34 fetuses (13 normal fetuses and 21 fetuses with congenital heart disease…