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Table 1 Comparison of the clinical course of the reported cases of fetal junctional ectopic tachycardia

From: Atypical fetal junctional ectopic tachycardia: a case report and literature review

  Patients
  1 2 3 4 5 6 7 8 9
Age (years) 32 23 27 34      25
GA at examination (weeks) 32 20 31 19 28 34 23 32 32
FHR (bpm) 130 180 190 200 280 270 180 200 170
1:1 AV conduction   + + + + +   + +
AV dissociation +   +    + +  
Minimal variability + +        
DV and PV retrograde flow + + +       +
Fetal hydrops + + + +   + + +
Other findings UV pulsation TR MR Ventricular filling: monophasic Ventricular filling: monophasic       UV pulsation
Ventricular filling: biphasic–monophasic         Dilated RA
Fetal ascites fMCG: AV dissociation        TR
          FO abnormally displaced toward the right
Fetal diagnosis PRFO JET JET or VT JET JET JET JET JET JET
Fetal therapy
 Digoxin + (non-effective) + (effective) + (non-effective) +    + (non-effective)  
 Sotalol + (non-effective)   + (non-effective) +    + (non-effective)  
 Amiodarone + (effective)      + (effective)   + (effective)
 Flecainide    + (effective)       
 GA at delivery 32 38 37 36 39    36 34
ECG
 HR 150–250 150–170 343       160
 1:1 AV conduction    +       +
 AV dissociation +   +       +
Neonatal therapy
 Amiodarone + (stopped because of side effect)   + (effective)     + (effective) + (effective)
 Flecainide + (effective)   + (effective)       
 Propranolol   + (effective) + (effective)       
 Prognosis JET under control Sinus rhythm JET under control Sinus rhythm Stop postnatally Stop prenatally   Sinus rhythm JET under control
  1. AV atrioventricular, DV ductus vein, ECG electrocardiogram, FHR fetal heart rate, fMCG fetal magnetocardiography, FO foramen ovale, GA gestational age, JET junctional ectopic tachycardia, MR mitral regurgitation, PRFO premature restriction of foramen ovale, PV pulmonary vein, RA right atrium, TR tricuspid regurgitation, UV umbilical vein, VT ventricular tachycardia; + = present, − = absent, blank = not described
  2. Patient no. (reference): 1, our report; 2, Zaidi et al. [7]; 3, Zaidi et al. [7]; 4, Fouron [10]; 5, Fouron [10]; 6, Fouron [10]; 7, Strasburger et al. [11]; 8, Fouron et al. [9]; 9, Lupoglazoff et al. [8]