An adult client has been treated on and off for PUD for the…

An adult client has been treated on and off for PUD for the past 12 years. He has always responded quickly to cimetidine (Tagamet) and antacids. He continues to smoke. He presents to the nurse practitioner’s office with severe epigastric pain, weakness, and lightheaded feelings. The stool guaiac is positive and his hemoglobin is falling (11.2 gm/dL). His weight has decreased slowly over the past 6 months for unknown reasons. Based on this information, what does the nurse practitioner do next?