Pregnancy: Ages 18-24 Community
What causes 22week fetus' HR to drop from 150 to under 40bpm??
About This Community:

A community of expecting mothers (18 to 24 Years Old) offering support through pregnancy and childbirth. Ask a question, join a conversation, share experiences.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

What causes 22week fetus' HR to drop from 150 to under 40bpm??

My obstetrician sent me to a maternal fetal medicine specialist because at 22 1/2 weeks my baby's heart rate is dropping from about 150 to less then 40 bpm about every 3-5 minutes, it lasts about 20 seconds and then starts to climb back to normal.  The specialist determined that the episodes are both induced by pressure and spontanious. The babies heart structure is perfect and is growing normally and my placenta is in front of the baby, or closest the outside wall. There were no signs of umbilical cord compression. The episodes happen when the baby makes a big movement or the Doctor pushes on my belly. The Doctor's first thought is that the baby has vagus nerve over-sensitivity but says she has not had a fetus have this frequent of episodes nor any spontanious episodes.  She is testing me for Sjogrens, though it is unlikey, and says that heart block doesn't have induced decelatations.  It sounds to me like what we are seeing doesn't fit either of her theories.  Both the specialist and my obstetrician say that at this point in gestation there is nothing they can do. I can't find any literature or personal stories that resemble mine. Can you provide any additional thoughts to this??  Could the problem be with the placenta perhaps?
Related Discussions
3 Comments Post a Comment
Blank
796253_tn?1344994932
Hi, I would try posting this in the pregnancy expert forum as well.  
Blank
Avatar_f_tn
A heart rate below 100 is definitely cause for concern. Though I have no idea why this could be happening unless there is a heart defect undetectable by ultrasound. I wish I had more answers but I don't.
Blank
363110_tn?1340924019
Most likely, if baby makes it to delivery, he/she will need a pacemaker to be sure that the heart beats normally.

They may choose to do fetal monitoring weekly or daily when you hit 30+ weeks... to be sure baby's heartbeat isn't slowing too much.
Blank
Post a Comment
To
Recent Activity
2020005_tn?1417986816
Blank
KTowne commented on Gardezi's status
46 mins ago
1601869_tn?1438874493
Blank
Stashie23009 surgery went well! feeling ... Comment
1 hr ago
1580318_tn?1440177198
Blank
Shannon79 commented on VICourageous's status
2 hrs ago
Blank
Weight Tracker
Track your weight throughout your pregnancy
Start Tracking Now
Blank
Pregnancy Tracker
Track your pregnancy
Start Tracking Now
Top Pregnancy Answerers
12155605_tn?1437376546
Blank
african_mama_bear
DC
Avatar_f_tn
Blank
Dolliefaith
I
Avatar_f_tn
Blank
GeekMom1213
ME
12584065_tn?1436324114
Blank
Destynee2015
Phoenix, AZ
2080231_tn?1438045820
Blank
dianaexoh
Royal Oak, MI
973741_tn?1342346373
Blank
specialmom
Pregnancy: Ages 18-24 Community Resources
RSS Expert Activity
233488_tn?1310696703
Blank
Marathon Running Done Over Many Yea...
May 21 by John C Hagan III, MD, FACS, FAAOBlank
233488_tn?1310696703
Blank
New Article on Multifocal IOL vs &q...
May 21 by John C Hagan III, MD, FACS, FAAOBlank
748543_tn?1371753642
Blank
TMJ/TMJ The Connection Between Teet...
Jan 27 by Hamidreza Nassery , DMD, FICOI, FAGDBlank
Top Pregnancy Answerers
12155605_tn?1437376546
Blank
african_mama_bear
DC
Avatar_f_tn
Blank
Dolliefaith
I
Avatar_f_tn
Blank
GeekMom1213
ME
12584065_tn?1436324114
Blank
Destynee2015
Phoenix, AZ
2080231_tn?1438045820
Blank
dianaexoh
Royal Oak, MI
973741_tn?1342346373
Blank
specialmom