<s>[INST] I had my aortic valve replaced 4 and a half years ago. They tell me I am now at 62% from 18%. I am taking 80 ml of lasic. I am starting to retain everything that I drink. I can t seem to drink anything without retaining. My cardiologist told me I have fluid overload. What does that mean. [/INST] Hi, dear. I have gone through your question. I can understand your concern.  Your have fluid overload in your vascular system.  It creates problem.  It may lead to congestive cardiac failure.  So you should take Chat Doctor.  Take it according to your doctors' advice. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>