Problem: A third-generation rancher, Angus Holstein, suffered a stroke at 77 years of age. During his last visit to the hospital for unrelated reasons, he learned of something called advance directives. He filled out some paperwork, and a "do not resuscitate" desire was documented so that if a procedure were performed to save his life, but his life would consist of remaining in a vegetative state or a state requiring life-sustaining equipment for the remainder of his life, his wish would be to not receive the life-saving measure. This document was appropriately witnessed and included in his medical record. When Angus was hospitalized with the stroke, he also developed pneumonia. If his physician does not treat the pneumonia, Angus will die. If he treats the pneumonia and Angus recovers, the stroke will leave him bedbound and paralyzed. The physician is aware of the advance directive and is unsure what to do. What should the physician do in this case, where the treatment is for the pneumonia and not for the stroke? Should the family be consulted? If so, why, and if not, why not?