Table 1 Maastricht classification system
From: Challenges in machine perfusion preservation for liver grafts from donation after circulatory death
| Category | Features | Alternative categories |
|---|---|---|
| 1 | Dead upon arrival, accident and emergency | Uncontrolled |
| 2 | Resuscitation attempted without success, accident and emergency | Uncontrolled |
| 3 | Awaiting cardiac death, intensive care | Controlled |
| 4 | Cardiac arrest while brain dead, intensive care | Controlled |