What question can help eliminate the risk of injury to a patient having blood drawn by a nurse wearing gloves?

Asking whether the patient is allergic to latex is crucial for ensuring their safety during a blood draw. Some individuals have latex allergies that can lead to severe reactions, including anaphylaxis. If a nurse wears latex gloves and the patient has a known allergy, this could cause harm. Identifying this allergy before proceeding with the procedure allows for the use of alternative gloves, thereby safeguarding the patient's health.

While the other options may gather useful information, they do not directly address a potential immediate risk associated with the nurse's protective equipment. For instance, questions about open wounds, recent blood draws, or the condition of the veins focus on other aspects of patient care but do not mitigate the risk of an allergic reaction to latex gloves specifically. This highlights the importance of prioritizing patient allergies in medical settings to prevent adverse events.