pods_5, welcome to the forum. I am sorry to hear that your husband continues to drink in the face of ESLD.
The best thing you can do is read the educational topics on this page. The information they contain will give you a better idea of what to expect. Since your husband's pain is in his left shoulder, I doubt it has anything to do with his liver. Shoulder pain is sometime indicative of a heart attack, but it's more likely that he did some damage in his fall. Did he have an x-ray? He could even have a fracture. That sounds like the least of his problems, though. And you are right--doctors aren't anxious to help a liver patient who continues to drink.
You have your hands full, but you can get a lot of information and support here.
Honey, there is nothing the hospital can really do for him at this point. They might drain his abdomen if there is a lot of fluid. 18 hours is not a long time w/o alcohol. Try to get some soup or ice cream into him. I doubt he can handle solid foods. Try to get him to drink water, at least. If his kidneys shut down, he won't live beyond a couple of days. I feel really bad for you that he has allowed this to happen and hasn't cared enough to get help.