A client has a prescription for heparin 1,000 units IV STAT. Several pre-filled syringes of low molecular weight heparin are available in the client's medication drawer. Which action should the nurse implement?

A. Advise the pharmacy of the need to deliver a vial of heparin to the nursing unit immediately: This is the appropriate action. The prescription is for standard heparin, which is different from low molecular weight heparin (LMWH) in both its formulation and use. Standard heparin must be administered intravenously and requires a different preparation than LMWH, which is typically administered subcutaneously. The nurse should request the correct form of heparin (standard heparin) to ensure the client receives the prescribed medication safely and effectively. B. Request a prescription to change the route of administration and use the available heparin: Changing the route of administration would be inappropriate without proper authorization from the healthcare provider. Low molecular weight heparin is not used for intravenous administration in this context, so this option does not address the need for the correct medication form. C. Calculate and administer the equivalent dose of the available low molecular weight heparin: Low molecular weight heparin and standard heparin are not interchangeable, and the dosing and administration routes are different. Attempting to convert the dose of LMWH to standard heparin is not advisable without proper guidance, as this could lead to incorrect dosing and potential harm. D. Dilute the available heparin in 250 mL of normal saline solution prior to IV administration: This is not applicable to low molecular weight heparin. Standard heparin, if available, may require dilution for IV administration, but LMWH is not used for IV administration and should not be substituted in this manner