NUR Final 518 Questions with Correct Answers. (100% Correct)

A nurse is preparing to obtain a blood sample from a client who has a triple-lumen central catheter in place. Which of the following actions should the nurse take? Discard the first 35 mL of aspirated blood before collecting the sample. Place the client in Trendelenburg position while withdrawing the blood sample. Withdraw the blood sample from the lumen that has the smallest diameter. Turn off the distal infusions for 1 to 5 min before obtaining the blood sample. Correct Answer Turn off the distal infusions for 1 to 5 min before obtaining the blood sample. To help ensure that the laboratory results will not be altered by the solutions infusing through the central access device, it is recommended that the nurse stop the distal infusions and clamp the tubing for 1 to 5 min before obtaining the blood sample. How long to stop the infusion varies with the type of infusion. A nurse is caring for a patient who has a central venous catheter. When flushing the catheter, the nurse uses a 10-mL syringe to prevent which of the following complications associated with central vascular access devices? Correct Answer Catheter rupture When injecting fluid through a catheter, a smaller syringe generates more pressure than a larger syringe does. Therefore, to reduce the risk of catheter rupture, syringes that are 10-mL or larger are recommended for flushing or injecting fluid into a central venous catheter. A nurse is caring for a patient who has a central venous catheter and suddenly develops dyspnea, tachycardia, and dizziness. The nurse suspects air embolism and clamps the catheter immediately. The nurse should reposition the patient in which of the following positions? Supine with a pillow beneath the knees On their left side in Trendelenburg position Upright and leaning over the overbed table On their right side with the head of the bed elevated 15° Correct Answer On their left side in Trendelenburg position