Jose, a 51-year-old man who now suffers from COPD due to long-term smoking, was admitted to the ER because of respiratory distress. Six months ago, while being admitted due to the same reasons, he executed an advance directive of not wanting any respiratory support. A copy of his advance directive was made available to the unit, however, he firmly states that he wants everything done to save his life. During his stay in the facility, he suddenly codes. What is the TOP priority of the ER staff?