Heterotopic pregnancy with discordant ultrasonic appearance of fetal cardiac activity

Obstet Gynecol. 1992 May;79(5 ( Pt 2)):824-5.


In an interesting experiment of nature, we observed the discordant onset of fetal cardiac activity between the two gestations of a heterotopic pregnancy. After initially detecting cardiac activity only in the tubal gestational sac, we later observed cardiac activity in the intrauterine sac 6 days after laparoscopic salpingectomy. This case illustrates the variable onset of cardiac activity. We advise expectant management of the intrauterine pregnancy in a heterotopic gestation when cardiac activity is not detected initially in the intrauterine sac.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Female
  • Fetal Heart / diagnostic imaging
  • Fetal Heart / physiology*
  • Humans
  • Pregnancy*
  • Pregnancy, Tubal*
  • Ultrasonography, Prenatal*