The nurse who suspects that the 19-year-old patient being treated for β-thalassemia major is experiencing complications of therapy advocates for which tests? Select all that apply.  

The nurse is supervising the student nurse in the insertion of a peripheral intravenous catheter. The nurse observes the student nurse apply a tourniquet, clean the insertion site, and insert the needle into the skin and get a flash of blood in the chamber. The nurse continues to quietly observe if the student nurse performs which action? 

A 13-year-old patient presents to the emergency department in a disoriented state with tachycardia, tachypnea, hypotension, and hypothermia. Upon assessment, the nurse notes the patient’s breath smells like acetone, the mucous membranes are dry, and the patient has poor skin turgor. The nurse knows which test is the priority?