(Closed) Low Fetal Heart Rate?! Help !

posted 5 years ago in Pregnancy
Post # 3
Member
389 posts
Helper bee
  • Wedding: July 2010

Did the tech measure the baby? If so, I don’t know why your doctor would be contradicting the measurement. I was a day off on my calculations, and it isn’t unheard of to be off multiple days from the LMP.

That being said, I also had a low fetal heart rate during my first ultrasound, was freaked out for a week, and then went back and it was perfect. Don’t stress too much!

Post # 6
Member
533 posts
Busy bee
  • Wedding: July 2013

I seriously dont think you should be worried, especially if the docs themselves told you Not to be. I know thats easier said than done cos youre not far along and thus mc worries is huge (i felt it) but Im actually  surprised they found a heart beat at all since usually only at 7 weeks can it be detected and measured as i understood. Just try to keep calm and pray if you believe in it. Hang in theRe! 

Post # 7
Member
533 posts
Busy bee
  • Wedding: July 2013

Also btw, that’s super early to have an u/s i understand. My first was at 8w4d exactly cos before there’s not much to see and can be nerve wrecking on us my midwife said.  Have in mind that A LOT happens every day in the first trI. Meaning the heart develops astronomically. Have faith. 

Post # 8
Member
4355 posts
Honey bee
  • Wedding: June 2013

The heart hasn’t been beating long, it starts out slow, speeds up over time and near the end of the pregnancy can slow down a bit again. Here’s a good website that talks about early development: http://www.americanpregnancy.org/pregnancycomplications/earlyfetaldevelopment.htm

If you look at the week 7 section it says “A normal heartbeat at 6-7 weeks would be 90-110 beats per minute”. I’d say you’re fine, especially since you were able to detect a heartbeat.

The other thing is a tech is not qualified to diagnose anything, all the results will go to a radiologist and then get transferred to your doctor which means in this case the radiologist wasn’t concerned, try not to worry too much.

Post # 9
Member
1401 posts
Bumble bee
  • Wedding: November 2011

My tech also said I was closer to 5w6d than the 6w3d I’d thought I was. I asked about heartbeats, but she said they’re too small to see at the moment. That said, my paperwork clearly stated ‘heartbeat detected’. Not sure what that means, but I’m hoping all is well. I’ve got twins, so hopefully the fact that they’re measuring the same gestational age says they’re supposed to be that size. It’s so hard to pinpoint exact dates, so I’d trust the doc when he says not to worry!

From everything I’ve heard, it’s super early to hear a heartbeat before 6 weeks, so I would be glad, not freaking out!

Post # 10
Member
492 posts
Helper bee
  • Wedding: July 2011

The way they do dating drives me nuts!  I always ovulate much later than day 14, but the OB insisted on using that to set the date and said it would only change if the ultrasound was way off.  No surprise, it was, so they adjusted but it was still a week off from where I thought it should be.  I think they said 7w1d, but I was 8 weeks.  Went for NT scan when I was 11 weeks by my calculation and ultrasound was spot on with my calculation (one day off).  The ultrasound doctor refused to change my dating because ultrasounds aren’t precise to less than a week or two anyway.  Finally, just had my most recent OB visit and this time he changed it based on the new ultrasound, as the early ultrasound is easy to measure imprecisely.

Long story short, my bet is the doc doesn’t want to change your date as it is within a week of ultrasound date.  I can understand concern on the heartbeat and I’d be nervous too, but seems very likely that the ultrasound date might be more correct for you than LMP date and everything is fine.

 

Post # 12
Member
333 posts
Helper bee
  • Wedding: April 2016

In early pregnancy, calculations based on LMP and gestational sac size always have a +/- 2 week margin of “error.” The most accurate measurement at your stage would be a CRL (crown rump length) measurement, which I’m going to assume was taken if they saw a heartbeat. I’m not sure why the discrepancy in dates between the tech and the doctor, but that one week does in fact make a difference in fetal heart rate. Very rarely do you see a FHR at 5 weeks well enough to measure, but at 6 weeks you should. I wouldn’t worry right now, wait until your next appointment. the low FHR could be from a number of things (and most definitely not the baby sleeping) even something as simple as technical error, and based on your post, it wouldn’t surprise me. Do you have any images you can post? I’d be happy to look. 

Post # 13
Member
333 posts
Helper bee
  • Wedding: April 2016

@MrsSawyer:  

A tech is not qualified? We may not have those 2 initials after our names, but you’d be surprised how many times those “qualified” radiologists you speak of ask us what they’re “looking at”

Post # 15
Member
4355 posts
Honey bee
  • Wedding: June 2013

@UltrasoundTech:  I’m just saying they aren’t suppose to comment on it to the patient. The radiologist is the one who is suppose to interpret the study and give results. I work in a hospital but I’m neither a tech nor a radiologist so “who is right more often” isn’t something I’m an expert on. 

Edit: I forgot to mention I am in Canada, perhaps things operate differently here, but they try and limit patients from receiving varying results which is why all information gets passed to the primary physician before going to the patient, not straight from the tech.

Post # 16
Member
333 posts
Helper bee
  • Wedding: April 2016

@MrsSawyer:  

No no, I know what you mean and you’re 100% right- we aren’t doctors and we aren’t supposed to give results to patients- I just get a little irked when people think we don’t know what we’re doing or aren’t qualified- you’d be shocked how many times people ask me if I know what I’m looking at LOL

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