I was being orientated at my first Lpn job ever! It was in home health, and there is the 'nurses communication notebook'. I made notes, read it, and every day, at the very end was "hagn"!!! I was too embarrased to ask the other nurse what this "medical" abbreviation was because abbreviations were pounded in my head in nursing school. I googled it, looked in my nursing books, etc....FINALLY, I was so frustrated I started to text my instructor as to WHY we did not learn this important abbreviation, they say it EVERY DAY!! And, broke down and asked the nurse first...She started crying laughing and I turned crimson!!LOL...Obviously, it means "have a good night"!!!