Responsibilities Progressive Care Unit RNs (PCU RNs) care for patients who need close monitoring and frequent assessment but aren't unstable enough to require ICU care. PCU RNs use computer equipment to monitor cardiac and other vital information. PCU RN job responsibilities include, but are not limited to: Record patient’s medical information and vital signs Prepare equipment and assist physician during examination and treatment of patient Monitor and adjust specialized equipment used on patients and interpret electronic displays to help guide treatment