You are caring for Mrs. M., a 68-year-old woman with an acute myocardial infarction. She is in the critical care unit after a successful angioplasty. Her husband brought in her living will, which...

You are caring for Mrs. M., a 68-year-old woman with an acute myocardial infarction. She is in the critical care unit after a successful angioplasty. Her husband brought in her living will, which states that Mrs. M. does not desire resuscitation. Mrs. M. is pain free and alert. As you start your beginning-of-shift assessment, Mrs. M. says, “You know, now that I’ve made it through the angioplasty, I realize that tubes and machines may not be so bad after all. I haven’t made it this far to give up now. If I go into cardiac arrest, I want you to do all that you can for me.” What ethical principle is Mrs. M. using? As her nurse, what actions should you take and why?