My husband, 79 in June, has been in bad health since 1980. Three back surgeries, two hip surgeries, three TIA s, prostate removal/cancer, gallbladder surgery, and the list goes on. He now is experiencing severe sleepiness during the daytime even with 2-3 naps. He is in bed at 6:30-7:00 every night. Question: What could the sleepiness be a symptom of.