Operating Room (First Assistant) in the Specialty of ORFA This position involves providing intraoperative assistance during cardiac surgical procedures, including coronary artery bypass grafting (CABG), aortic valve replacement (AVR), and mitral valve (MV) repair or replacement. Responsibilities include applying the nursing process in all aspects of the nurse first assistant role, demonstrating knowledge of human anatomy and physiology, and establishing a safe peri-operative environment.