I had a scan at 30weeks which showed a fluid level of 7.4, they told me that anything under 5 was their high risk area, but that they liked a level of 10-25 up to 34 weeks as fluid is supposed to keep increasing up to 34 weeks and then start to decrease.
They requested weekly scans over the following two weeks to check fluid and then check fluid levels, growth and placental function. I had the first scan the following week which came back at 8.5 and another the next week which showed levels at 8.0 and bubs growth had slowed considerably from the 98th percentile to the 83rd. She was supposed to put on approx 400gm in that two week period, but looks like she has only gained about 180gm. However she was 2-3 weeks ahead at the 30 week scan so they weren't overly concerned about the growth slowing just yet, but if it continues to slow from now then there is some concern about placental function (more than likely a direct result of the insulin I am on) and they are keeping a close eye on it, as I also have a history of placental deterioration.
They have told me that they like to keep a closer eye on things at this stage and have requested another full growth, fluid and placental function scan for two weeks time when I will be coming up 35 weeks, and we will review growth and fluid levels then, but if the placenta looks like it's working fine and fluid is over 5 then they won't do anything else, I have another scan for two weeks after that at 37 weeks and if bub has slowed down with growth again, fluid has dropped or placenta isn't functioning well then they will make the decision to induce right then, or wait until the following week at 38 weeks when I am booked for induction due to diabetes anyway. In the meantime I have to keep a very close eye on bubs movements and any lapse or significant change I need to go in for monitoring ASAP.
From what I have researched trying to find information on this, there is a possibility of increasing fluid in the second trimester by drinking a lot more water, being on bedrest or resting as much as possible, and stopping all exercise or strenuous activities. In extreme cases where they suspect dehydration as a contributing factor they may admit to hospital and start a drip. They will often offer more regular scans at weekly or fortnightly intervals, ask you to check for any fluid leakage daily, and also ask keep an eye on babies movements. They may also request weekly CTG monitoring sessions to make sure that bubs heart is consistent and there's no signs of distress.
I found a number of forum posts when googling of women at various stages of pregnancy who had low fluid and went on to deliver either a little earlier than expected or at term. It was really a week by week thing and also dependant on other factors like IUGR issues, there wasn't any one set rule about it.
Edited by MickeyBoo, 16 April 2012 - 04:54 PM.