Table 2 Serial measurements and outcome of seven fetuses with paired measurements showing abnormal ePR and/or mPR
PregnancyGestation (weeks)Heart rate (bpm)mPR (ms)ePR (ms)Final fetal rhythmOutcome
122.0141130115CHBHydrops & IUD
23.0153*144162
224.01461291151° AVB1° AVB
32.1153141130
33.0138142136
3 (Triplet 1)19.7156127118SRNormal ECG
3 (Triplet 2)19.7153124122SRNormal ECG
425.71391271301° AVB1° AVB
29.7136125138
33.7132139143
521.3149128100SRNormal ECG
35.4140135108
636.0140134124SRNormal ECG
  • Values in bold are >95th centile.

  • *Second-degree heart block with heart rate ranging from 45 to 159 during the observation period.

  • 1° AVB, first degree heart block; CHB, complete heart block; IUD, intrauterine death; SR, sinus rhythm.