During an endoscopy, a doctor inserts a long tube with a light and a camera called an endoscope into a patient’s esophagus, colon, stomach, ears, nose, throat, heart, urinary tract or abdomen. Endoscopy Nurse job duties directly contribute to the success of these procedures by providing care to the patient and assistance to the doctor. When they’re successful in their roles, they can help a medical facility or practice deliver exceptional care and adhere to health and safety standards. As a result, their work reduces the risk of medical errors and can positively impact patient satisfaction rates.