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I just heard about a mom who had great bp during her twin pregnancy, never developed high blood pressure, and had a great bp reading after the birth of the babies and when she first went home. Now, a week and a half later, she's been having migraines and not feeling well, went in, and was diagnosed with pre-eclampsia AFTER the birth!? I've never heard of that, and was wondering if it was something anyone here knew about. How exactly does that work?
 

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I've known academically that pp pre-e can happen but have only heard of it happening a few times. How it happens? Well-I'll try-pre-e generally (pregnancy or pp) is about vasospasm-the blood vessels don't widen to accomodate the extra blood load. In a healthy pregnancy that widening happens, in a pre-e one something happens to trip up the normal circuitry, and the widening DOESN'T happen. Think about pipes here-more fluid going through the same size pipe will have higher pressure.<br><br>
So why does it happen pp? The immediate pp period is a HUGE fluid shift-fluids go from the body's extracellular space back into the blood vessels. Over the next few weeks, the body redistributes it, most of it OUT in the form of urine. That big fluid shift is to a greater degree with twins.<br><br>
So with pp pre-e, it's the same mechanism of vasospasm-the blood volume increases but the pipes stay the same. As to what's different with pp and pregnancy-don't know. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/redface.gif" style="border:0px solid;" title="Embarrassment"> Maybe her body was ok with the gradual increase of pregnancy, but rebelled against the postpartum fluid shifts. Sometimes it's nutrition, sometimes it's emotional, sometimes it's physical. So many different things play into pre-e that without knowing more about her, I can't say what happened to tip over her applecart.<br><br>
Wow. That's a really long non answer. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/lol.gif" style="border:0px solid;" title="lol"> HTH....<br><br>
Maybe doctorjen will post....<br><br>
Jennifer
 

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I've seen numbers of 30-40% of eclamptic seizures occurring postpartum. Haven't had any myself but have had cases of PE extending a few weeks into postpartum.
 
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