is the most common complication of end stage liver disease
.This a very important mile stone in the patients suffering from ESLD,as this makes the survival chance very poor.
The most important complication in such patients is bacterial peritonitis
The symptoms and signs of your husband suggest that your husband has developed this infection.
Must consult your doctor urgently,get the required investigations done and start broad spectrum antibiotics as per the advise of your doctor.
I hope it helps.