The nurse is preparing to administer enoxaparin 30 mg subcutaneously using a pre-filled syringe containing 30 mg in 0.3 mL. Which action should the nurse implement?

Rationale: A. Hold the skin fold throughout the injection: Pinching the skin may be helpful to avoid intramuscular injection, especially in thin clients, but it's not required throughout the entire injection process. It is not the most critical technique compared to air bubble retention. B. Insert the needle at a 90 degree angle: A 90-degree angle is appropriate for clients with sufficient subcutaneous tissue, but in thinner clients a 45-degree angle may be safer. The angle depends on the client’s body habitus and is not universally required. C. Retain the air bubble in the syringe barrel: The air bubble helps ensure that the full dose is delivered and prevents medication from tracking through subcutaneous tissue, which could cause bruising. It should not be expelled before administering enoxaparin. D. Massage the area after injection: Massaging the site can increase the risk of bruising and tissue irritation with anticoagulants like enoxaparin. Gentle pressure may be applied if needed, but the site should not be massaged.