Table 1 Outcome of fetuses showing atrioventricular heart block
CaseReferral gestationReferral rhythmRhythm at deliveryFetal therapyGestation delivery/deathPostnatal rhythmTreatment
127+5CHBCHBNonec/s 39 weeksCHBNot paced
221+1CHBCHBNonec/s 38+1CHBPPM 2.5 yrs
324CHBSSSNonec/s premature labour 34 weeksSSSHypothyroid on thyroxine. No pacing at 14 months
422CHB1° AVBBetamethasone 5 mg o.d. (1 month)c/s 31 weeks IUGR (1.26 kg)2° AVBPPM 1 year
522CHB & hydropsCHB IUDNoneIUD 31 weeksIUDIUD
626+6CHBCHBNonec/s 39 2.7 kgCHBPPM day 4
7202:1 heart blockCHBDexamethasone 6 weeks (SLE, IDDM, hypothyroid)c/s 38 weeks (3.95 kg)CHBNo Rx – moved abroad
8191° AVB1° AVBNoneSVD term1° AVBNone
925+51° AVB1° AVBNoneSVD term1° AVBNone
  • 1° AVB, first-degree heart block; 2° AVB, second-degree heart block; CHB, complete heart block; c/s, caesarean section; IDDM, insulin-dependent diabetes mellitus; IUD, intrauterine death; IUGR, intrauterine growth restriction; o.d., once daily; PPM, permanent pacemaker; Rx, treatment; SLE, systemic lupus erythematosus; SSS, sick sinus syndrome; SVD, spontaneous vaginal delivery.