DRN is the acronym for "Do Not Resuscitate," which means that medical professionals should not attempt to revive a patient in the event of cardiac or respiratory arrest. Although DRN is the commonly used term, there are other synonyms for this medical directive. These include DNR (Do Not Revive) and DNACPR (Do Not Attempt Cardiopulmonary Resuscitation). These synonyms are used interchangeably in medical settings, but the meaning remains the same. Patients who choose to have a DRN in place must discuss their wishes with their medical team and loved ones to ensure that everyone understands their wishes and respects them in the event of a medical emergency.