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Low Blood Pressure 
29th-Jul-2010 09:46 pm [blood pressure, dizziness, fatigue]

My midwife recorded my blood pressure this afternoon (4:30pm) @ 104/56.  She said "nice and low" and moved on.  This low number concerns me, especially since I know I'm probably waking up in the morning with a lower pressure than that.  At my first appt. just around 13 weeks, I was at 110/65.

Anybody have experience with LOW blood pressure?  Is there something I should do or keep an eye on?  I feel like the midwife didn't really think about it because most women come in with high blood pressure issues.

I've been having what I feel is extreme fatigue and some lightheadedness.  I chalked it up to simply more pregnancy stuff, but maybe it is more than that?

30th-Jul-2010 03:05 am (UTC)
During the first and second trimester, it's common for your blood pressure to be a bit lower than normal. If your pressure is already naturally on the lower side, that reading isn't really cause for alarm.
30th-Jul-2010 02:16 pm (UTC)
ok. yeah, i naturally am around 110/65, which is what they got at around 13 weeks.
30th-Jul-2010 03:05 am (UTC)
It is normal to have a dip in blood pressure in the 2nd trimester, and that is *nice* and low, not alarmingly low. Trust me, you'd rather have low than high.
30th-Jul-2010 04:09 am (UTC)
I just entered into my 3rd trimester and at my last appointment, my BP was 90/50! I was surprised at how low it was, but before I was pregnant...I was VERY athletic, a runner, swimmer, and cyclist so my BP seemed to be low most of the time because of my fitness level I suppose. I wasn't as active right before I got pregnant (I had totally been slacking off! lol) but my BP has been pretty low! My doc was the same way...no concern about it whatsoever. She actually said it was very good.

I'm wondering if low BP has anything to do with my learning relaxation techniques in preparation for birth?? Hmm...could be!
30th-Jul-2010 03:40 pm (UTC)
I don't know; I think those things *can* influence blood pressure but it is also a result of physiological processes beyond our control. I was also very athletic with my first pregnancy, and was working very earnestly on relaxation, but I had PIH in the 3rd trimester. I kept being told I just needed to relax...you can't just relax away PIH, and that really made me feel awful.

However, if nothing else is nudging your blood pressure up, I'm sure relaxation techniques can only help! :)
30th-Jul-2010 05:31 pm (UTC)
Haha I'm NOT athletic at all, but my blood pressure has always been low. I think I get it from my dad who has also had some extraordinarily low blood pressure.
30th-Jul-2010 04:47 am (UTC)
That is still within the range of normal blood pressure, don't worry.
30th-Jul-2010 02:14 pm (UTC)
online i read that 60 is the cut-off for the bottom number and that 110 is the cut-off for the top unless you are a child or an athlete, then its 100.

and i know its not crazy low, but it was 4:30pm, after i'd eaten and been up and around all day.

...what is it when i wake up in the morning? when i feel like passing out and can barely wake myself up?
30th-Jul-2010 07:41 am (UTC)

It's one the low side of normal, don't worry. I have naturally low blood pressure and it was low during pregnancy too. The only issue I had was that I kept fainting all over the place, but that could have been just as easily caused by hyperemesis causing my electrolyte levels to go too low.
30th-Jul-2010 10:47 am (UTC)
I'm low non-pregnant and have been low in each pregnancy (90's / 50-60's). Low is better (& def normal) than high.
30th-Jul-2010 02:17 pm (UTC)
that's reassuring. i'd be willing to be if you took my blood pressure in the morning, i'd drop below 100 systolic easily and maybe below 50 on diastolic, which is the one that is concerning me.
30th-Jul-2010 05:29 pm (UTC)
My last three readings (yesterday, 2 weeks ago, and 4 weeks ago) have all had a top number between 90 and 99 and a bottom number between 50 and 60. My midwife is not worried about it. I started out with top number between 100 and 110 and bottom number between 70 and 79 in the first part of my pregnancy. So it seems that my numbers are dropping instead of rising. But if the midwife isn't worried about it, neither am I :) I don't have much in the way of fatigue and dizziness though. The low blood pressure combined with those symptoms may be something to look at more closely.
30th-Jul-2010 05:30 pm (UTC)
Wanted to add that I am 32w5d.
30th-Jul-2010 05:52 pm (UTC)
My blood pressure at my last appointment was 104/56. I have always had lower blood pressure, pregnant or not. It's still in the normal range and I've never had any side effects because of it. I think you'll be just fine. :)
2nd-Aug-2010 06:00 pm (UTC)
the lowest my blood pressure has been when i checked is 86/45 which is really low my average blood pressure is around 90/55 but i also have this weird POTS thing that makes my blood pressure suddenly drop and my heart race (postural orthostatic tachycardia syndrome) the only real danger in your blood pressure running a little low is that you are more prone to dizziness or fainting my cardiologist and the perinatologist my ob sent me to see both agreed that my blood pressure shouldnt affect the baby and that my only real concerns were to be careful when getting up from a sitting or laying position. they also told me that it was normal for blood pressure to dip during the 2nd trimester as your arteries expand to prepare for the increase in blood volume...hope that helps some
2nd-Aug-2010 06:03 pm (UTC)
it does, thanks!

i have been monitoring and in the mornings my BP is running about 93/50 in the mornings or after naps

the highest it gets is about 100/53

the lowest i have seen is 90/47
2nd-Aug-2010 07:11 pm (UTC)
yeah thats not bad you dont have to really worry till that top number drops to the low 80's thats normally the point when you are going to pass out the fancy name for that is syncope my cardiologist told me lots of gatorade because the sodium and electrolytes help keep you hydrated and your blood volume up which helps a lot with the dizziness you may have developed POTS during pregnancy some women do but it normally isnt severe and it goes away after you give birth. They didnt give me any medication for it anyways just some lifestyle changes like frequent snacks increased sodium and liquids and they want me to avoid sitting or standing still for long periods of time because it can cause your blood to pool in your lower extremities
2nd-Aug-2010 07:14 pm (UTC)
good to know. i was actually more concerned with the bottom number, since it is waay below the cut-off (think its 60).

thanks again though, i feel reassured! i will make sure to stay hydrated and get enough sodium.
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