Which action by the nurse would require immediate intervention by the supervisor

Which action by the nurse would require immediate intervention by the supervisor? geoquad The nurse informs the patient that an arteriovenous (AV) fistula will be placed several weeks prior to hemodialysis (HD). geoquad The nurse reports auscultating a bruit over the site of an AV fistula. geoquad The nurse adds heparin to a solution of dialysate. geoquad The nurse places a peripheral IV distal to a Hemodialysis Reliable Outflow (HeRO) bridge.