A client is transferred from the ER to the neurological unit with a diagnosis of ischemic stroke. The nurse is assisting in preparation to begin a heparin infusion. Which piece of equipment is essential? A. 18-gauge IV catheter B. Bag of normal saline C. IV regulation device D. Extension tubing

Before choosing the correct answer, let's understand the purpose of each option: A. 18-gauge IV catheter: This is a needle inserted into a vein for administering medications or fluids. The gauge number defines the size of the needle, with larger numbers meaning smaller diameters. An 18-gauge catheter is relatively large in diameter and allows for quick administration if needed. B. Bag of normal saline: Normal saline is a solution that contains 0.9% sodium chloride (salt) dissolved in water. It is commonly used to dilute medications or to restore fluid balance in patients. C. IV regulation device: This is a piece of equipment that either mechanically or electronically regulates the rate at which fluids or medications are administered intravenously. D. Extension tubing: This is a flexible tube that connects the IV catheter or needle to the medication or fluid bag. It allows the medication to be given over a longer distance and facilitates patient mobility.

Heparin is an anticoagulant medication that prevents blood clots from forming. It is often used to treat stroke patients and is administered intravenously. For a client transferred with a diagnosis of ischemic stroke, administering heparin infusion is essential to prevent further blood clots from forming.

Now that we know the purpose of each option and the importance of heparin infusion for the client, let's determine the essential equipment: A. 18-gauge IV catheter: While necessary for administering fluids and medications quickly, the choice of the specific gauge of the catheter is not essential for heparin infusion. B. Bag of normal saline: This is an important component of IV administration, as it is often used to dilute medications, including heparin. However, it is not the only diluent which can be used, and thus not essential. C. IV regulation device: This is the essential piece of equipment for administering heparin infusion since the exact rate of administration is crucial for ensuring the proper therapeutic effects in a client with an ischemic stroke. D. Extension tubing: While it can provide some benefits for patient mobility and comfort, it is not essential for administering heparin infusion itself. The correct answer is: C. IV regulation device.