Work under the supervision of an RN or LPN as you prepare to apply for Maryland State certification as both a Certified Nursing Assistant (CNA) and a Geriatric Nursing Assistant (GNA). Youll learn to assist with activities of daily living which may include helping patients/clients with meals, personal grooming, and toileting are the CNA's or GNA's primary duties. Additional responsibilities involve performing basic nursing skills such as obtaining a patients/clients vital signs, i. e. pulse rate, blood pressure, etc.