Hello from JustAnswer. I am sorry that your husband has been having so much difficulty.
Yes, it would be appropriate for you to take him to an ER. As for which hospital ER, that is more complex. Returning to the same ER would likely involve a different physician or assistant, since it will be another shift.
If you have several ERs to choose from, the best option would be one that is certified as a trauma center, as it would usually have better orientation towards dealing with trauma cases. If there is no certified trauma center in your community, then it would be OK to go to whichever ER that is closest or at the hospital that you would usually prefer, even if it is the same facility in which he was seen last night.
If it is not readily apparent whether any local hospital ER is a trauma center, I can try to find the closest one to you if you can let me know where you live. (I realize that you entered your location when you registered for the site, but all personal information is blocked to anyone except the business office.)
If I can provide any additional information, please let me know.