My grandfather was diagnosed with a bowel obstruction is too sick to operate on they put him on comfort measures and sent him to the nursing home a dr?

You mean a "DNR"?: It is unfortunate and sad when a loved one gets sick to the point where further treatment will just cause more pain without helping. At that point we try to make them as comfortable as possible. A dnr means "do not resuscitate", meaning if he has a heart attack or starts dying, he won't be shocked or have compressions started. He also won't be intubated and put on a ventilator.

Compassion & Care: It sounds like the doctors involved in your grandfather's care are providing compassion in not subjecting him to a painful operation that could have multiple complications, prolonged hospitalization, multiple procedures, and make his final days miserable. Sometimes the best choice is to give people pain medication, a quiet comfortable atmosphere, and time to be with their loved ones; this is good.