RN stands for registered nurse. Part-time RNs provide care for patients with illnesses and injuries. They often work in conjunction with physicians to develop treatment plans to help the patient become healthy again. Part-time RNs have the same job duties as full-time RNs; the main difference is that part-timers typically work thirty hours or less per week. Part-time RNs are not able to diagnose illnesses; once the doctor or other supervising health professional has determined what is ailing the patient, the RN is able to work with the patient to explain what the treatment plan entails and their role in recovery. As a part-time RN, your responsibilities may include documenting medical history, administering medications, and checking patient vital signs. You may also advise patients and families about how to continue treatment at home and how to prevent future illnesses.