ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 13 : Intravenous Therapy Questions
Question 1 of 5
The RN is training other RNs at the hospital to insert midline catheters. What would the RN teach the other RNs about how many inches of the catheter should be inserted into the required site?
Correct Answer: B
Rationale: A midline catheter is 7 to 8 inches long, but only 3 to 6 inches of the catheter are inserted. A midline catheter should not be inserted 1 to 2 inches, 7 to 8 inches, or 8 to 9 inches.
Question 2 of 5
The client is going out on pass for the afternoon with family. The health care provider has prescribed that the client's venipuncture device needs to be temporarily capped. How will the nurse ensure that the vein remains patent?
Correct Answer: B
Rationale: When a venipuncture device is temporarily capped, the vein is kept patent by flushing the lock with saline or heparinized saline. TPN solutions are used to provide nutrition, and colloid solutions such as albumin and cryoprecipitate are used to replace circulating blood volume; these solutions are not used to flush locks.
Question 3 of 5
The emergency department nurse is caring for a client who has just been admitted by ambulance for a suspected myocardial infarction. The physician orders IV fluids of normal saline to be hung at 100 $\mathrm{mL/hr}$. The nurse knows that this is what type of IV solution?
Correct Answer: A
Rationale: The two types of IV solutions are crystalloid and colloid solutions. Crystalloid solutions consist of water and uniformly dissolved crystals such as salt (sodium chloride) or sugar (glucose, dextrose). Normal saline is an isotonic crystalloid solution. Colloid solutions are used to replace blood. Hypertonic solutions are rarely used. Hypotonic solutions contain fewer dissolved substances compared with plasma.
Question 4 of 5
The nursing instructor is discussing the different types of IV fluids with the nursing students. What type of fluid would the instructor tell the students is used to replace circulating blood?
Correct Answer: D
Rationale: Colloid solutions are used to replace circulating blood volume because the suspended molecules in the solutions pull fluid from other fluid compartments in the body. Colloids contain blood cells such as RBCs. Crystalloid solutions are made from water and sodium chloride or sugar. Hypotonic solutions contain more dissolved substances compared with plasma. Hypertonic solutions pull fluids into plasma but do not assist with replacement of cells.
Question 5 of 5
The nurse caring for a client with an intravenous infusion is looking up her institution's policy on changing IV equipment used in a venipuncture. When is most IV tubing changed?
Correct Answer: D
Rationale: Most IV tubing is changed every 72 hours, but the exact parameters depend on agency policy. Some exceptions include tubing used to administer TPN and intermittent secondary infusions.
Therefore, the other options are incorrect.