Two days after surgical fixation of a fractured femur, a client suddenly reports chest pain and difficulty in breathing. The nurse suspects the client had a pulmonary embolus. Which action should the nurse take first?

Choice A reason: Reminding the UAP to apply a fitted respirator mask before entering the client's room is not a necessary action for the nurse to take. A respirator mask is a type of personal protective equipment (PPE. that filters out airborne particles and droplets that may contain infectious agents. A respirator mask is required for clients who have or are suspected of having airborne diseases, such as tuberculosis, measles, or chickenpox. Influenza is a respiratory disease that is transmitted by droplet contact, not by airborne contact.

Choice B reason: Instructing the UAP to notify the nurse of any changes in the client's respiratory status is not a specific action for the nurse to take. Respiratory status is an assessment of the client's breathing pattern, rate, depth, effort, and oxygen saturation. Respiratory status can be affected by various factors, such as infection, inflammation, obstruction, or injury. The nurse should monitor the client's respiratory status regularly and teach the UAP to report any signs or symptoms of respiratory distress, such as dyspnea, cyanosis, wheezes, or cough.

Choice D reason: Assigning the UAP to provide care for another client and assuming full care of the client is not a feasible action for the nurse to take. The nurse should delegate tasks according to the scope of practice, competency, and availability of staff. The nurse should not reassign staff without a valid reason or without consulting with other team members. The nurse should also not assume full care of a client unless it is necessary or appropriate. The nurse should supervise and evaluate the UAP's performance and provide feedback and guidance.

Choice A reason: Increasing the intake of dark green leafy vegetables while taking warfarin is not a good instruction because it can decrease the effectiveness of warfarin. Dark green leafy vegetables are rich in vitamin K, which is a coagulation factor that counteracts the anticoagulant effect of warfarin.

Choice B reason: Eating two servings of dark green leafy vegetables daily and continuing for 30 days after warfarin therapy is completed is not a good instruction because it can cause bleeding complications. Dark green leafy vegetables are rich in vitamin K, which is a coagulation factor that counteracts the anticoagulant effect of warfarin. Stopping warfarin while continuing to eat high amounts of vitamin K can increase the risk of clot formation and thromboembolism.

Choice D reason: Avoiding eating any foods that contain any vitamin K because it is an antagonist of warfarin is not a good instruction because it can cause bleeding complications. Dark green leafy vegetables are rich in vitamin K, which is a coagulation factor that counteracts the anticoagulant effect of warfarin. Eliminating vitamin K from the diet can increase the sensitivity to warfarin and cause excessive bleeding and bruising.