When Doctors need medical what choices do they make?

From the WSJ:

Doctors don't want to die any more than anyone else does. But they usually have talked about the limits of modern medicine with their families. They want to make sure that, when the time comes, no heroic measures are taken. During their last moments, they know, for instance, that they don't want someone breaking their ribs by performing cardiopulmonary resuscitation (which is what happens when CPR is done right).

In a 2003 article, Joseph J. Gallo and others looked at what physicians want when it comes to end-of-life decisions. In a survey of 765 doctors, they found that 64% had created an advanced directive—specifying what steps should and should not be taken to save their lives should they become incapacitated. That compares to only about 20% for the general public. (As one might expect, older doctors are more likely than younger doctors to have made "arrangements," as shown in a study by Paula Lester and others.)

Why such a large gap between the decisions of doctors and patients? The case of CPR is instructive. A study by Susan Diem and others of how CPR is portrayed on TV found that it was successful in 75% of the cases and that 67% of the TV patients went home. In reality, a 2010 study of more than 95,000 cases of CPR found that only 8% of patients survived for more than one month. Of these, only about 3% could lead a mostly normal life. . . .