A Patient with Gastroesophageal Reflux Disease (GERD) Has a Diagnosis $\mathrm{H}_{2}$

A patient with gastroesophageal reflux disease (GERD) has a diagnosis of Barretts esophagus with minor cell changes. Which of the following principles should be integrated into the patients subsequent care?

A) The patient will require an upper endoscopy every 6 months to detect malignant changes.
B) Liver enzymes must be checked regularly, as $\mathrm{H}_{2}$ receptor antagonists may cause hepatic damage.
C) Small amounts of blood are likely to be present in the stools and are not cause for concern.
D) Antacids may be discontinued when symptoms of heartburn subside.