I had a crt-d medtronic implanted. I was told that there is a base line and as soon as the device detects a change in the fluid level it sends a warning to the clinic before I feel the pressure or start bloating. I think the confusion stems from the change of name from congestive heart failure to heart failure. I guess the answer to your question is it depends on the device. Mine Does. I hope this helps and if I am in error someone please let me know.
I just had a CRT-D installed on June 3rd. Reason for replacing my existing 2 lead pacemaker with a 3 lead (CRT) was to sync both front and back chambers of the heart. Congestive heart condition is a broad definition for heart failure, you need to be more specific, is it a value problem, electrical issue or enlarging of the pump chamber?
In my case my electrical implusing between the front and back chambers were not the same, i.e. I needed a tune up. I have been labeled as having congestive heart failure since March 2007. My pumping rate dropped from 45% to 19%, which made me end stage suggested that I would eventually need a transplant.
I chose to look into regenerative medicine (Adult Stem Cell) treatment. This option is not legal in USA so I went to Bangkok and paid for the Vescell treatment. If your interested in checking this out just type vescell in a search and you will be directed to their web site. This past December I had bone marrow implant into the inner wall of my heart, purpose being to jump start new muscle growth.
Point being there are many things to learn about congestive heart failure. The most important being to find what is causing the heart muscle to weaken and therefor pump less blood than the body needs to be normal.