Dear Aimeth,
Hospice care can be done entirely at home. My mother moved into assisted living when she became very ill with leukemia. Hospice took over her care and provided a packet of medications to ease any end of life events. The only problem we ran into at the end is that the use of morphine to ease air hunger was never explained to us and when she went into respiratory distress she chose to go to the hospital. It is also true that the assisted living staff did not contact hospice for instructions and was not willing to administer morphine. Had I been with her at the time we could have perhaps avoided the trip to the hospital, but when I spoke to hospice they told me that she could go to the hospital.
The purpose of hospice is to ease dying. Any medical treatment including surgery, aimed at relieving suffering, is acceptable, but a hospice patient cannot have life prolonging treatments. That does not mean that all treatment must be withdrawn, as the palliative chemo my mother received was relieving symptoms; however, a patient who desires that any or all heroic measures be used to sustain life cannot be a hospice patient. Your husband, or whoever is authorized to make his medical decisions would have to agree that he would not be resuscitated.
I believe that the information I have provided is correct, but I do not know if there are variations or exceptions in different jurisdictions. My guess is that you can find information on-line about the different aspects and varaitions of hospice.
Aimeth, my heart goes out to you. If your husband is afraid of dying but realizes that is where things are going, accepting hospice can ease his course.