SN instructed on check the left ventricular assist device (LVAD) each time you assess the patient’s vital signs. You will hear the continuous humming sound of the pump when auscultating the heart. Make sure the battery-charging station is plugged into the wall and at least two spare batteries are in the charge station; a green light indicates a full charge. Additional safety checks include assessing the driveline to ensure it’s securely in place and confirming there’s a backup system controller in the room.