What are the known risks for some one with low blood pressure?

Ventricular Fibrillation (V-Fib) is an irregular heartbeat. It causes your blood pressure to drop because you're heart isn't beating right. Instead of a normal pumping action, your heart does a crazy "bowl of jelly" thing. It can be a serious condition, pregnant or not, and you really need to talk about your options with your doctor. I was ready to answer a normal low blood pressure question, but this is totally different! Normal low bp in pregnancy is caused by excessive peeing, and your body creating extra blood. I would ask: if you will require further monitoring (24 hour chest harness), and you're options for heart monitoring during labour. I don't want to scare you, you might have a very mild irregularity that won't cause any problems, but it really isn't worth the risks not to look into it further!