following breakfast, the nurse is preparing to administer 0900 medications to clients on a medical floor. which medication should be held until a later time? a. the loop-diuretic furosemide (lasix) for a client with a serum potassium level of 4.2 meq/l b. the mucosal barrier, sucralfate (carafate), for a client diagnosed with peptic ulcer disease. c. the antiplatelet agent aspirin, for a client who is scheduled to be discharged within the hour d. the antifungal nystatin (mycostatin) suspension, for a client who has just brushed his teeth.