question: Hi - I have a family member who was has been battling stage 4 lung cancer the past 3 years.  She is now experiencing very low sodium (109).  She's in intensive care and her potassium is also low.  Other family members are asking me if they should hurry into town.  I think she looks better today than yesterday.  Her blood pressure is low too.  Question:  what are the signs that a person's system is shutting down and they are nearing the end of life?