(By Ha Do Byon, assistant professor of nursing) As a former visiting nurse at one of New York City’s largest home health care agencies, I know firsthand what these caregivers face when they cross the threshold of a patient’s home. In the best situations, it’s a patient’s gratitude for coming to provide comfort, reduce isolation, and maybe even spark a little conversation. At other times, coming through that door provokes intense discomfort. Dread. Even danger and violence.