Is Urin Sodium Appropriate or Inappropriate?

The main purpose of urin sodium is to help answer the question, is the a d h that's being released appropriate or inappropriate? In other words, is it being released by your body in an attempt to maintain intra vascular filling, or not? Ok, wait a minute here. I always thought that urine sodium just tells us of ras or that runnin angiotensonal dostrone em is on or not. And we're going to put it all together with a couple of cases in a minute. But the patho piz teaching point is that if 80 h is appropriately on because of some low sensed blood volume date, you can bet rass will be on too.