Responsibilities Cardiovascular Intensive Care Unit (CVICU) Registered Nurses (RNs) work closely with doctors and heart specialists to control patients’ blood pressure and to prevent heart failure. The CVICU RN provides education and support to families and patients while acting as a liaison between the doctors and the patients. CVICU RN job responsibilities include, but are not limited to: Assess a patient’s condition and implement care plan while observing and recording patients’ vital signs …