A client has been taking an opioid for pain relief following abdominal surgery. The client complains of constipation. Which statements indicate understanding by the client? (Select All that Apply.)

A. Cetirizine (Zyrtec): Cetirizine is an antihistamine used to treat mild allergic reactions, such as seasonal allergies or mild hives. It is not the treatment of choice for severe allergic reactions like anaphylaxis, which this patient may be experiencing given the symptoms and history of peanut allergy.
B. Diphenhydramine (Benadryl): Diphenhydramine is an antihistamine that can be used for mild to moderate allergic reactions, including urticaria and mild anaphylaxis. While it may be part of anaphylactic treatment, it is not the primary treatment for severe symptoms like difficulty breathing.
C. Guaifenesin: Guaifenesin is an expectorant used to relieve chest congestion and make coughs more productive. It is not appropriate for treating allergic reactions or respiratory distress related to anaphylaxis.
D. Epinephrine: Epinephrine is the first-line treatment for anaphylaxis, which is a severe and potentially life-threatening allergic reaction. It works by rapidly reducing airway swelling, improving breathing, and stabilizing blood pressure. Given the patient's symptoms and history of peanut allergy, epinephrine is the most appropriate medication.

A. Replacement therapy with pancreatic enzymes: Pancreatic insufficiency results in a lack of digestive enzymes, leading to malabsorption of nutrients. Enzyme replacement therapy is essential to aid in digestion and nutrient absorption.
B. Treatment with stimulant laxatives: Stimulant laxatives are used to treat constipation by increasing bowel motility. They do not address the underlying enzyme deficiency in pancreatic insufficiency and can potentially cause further nutrient loss.
C. Treatment with PPIs to decrease stomach acid: Proton pump inhibitors (PPIs) reduce stomach acid production and are used for conditions like GERD. They do not address the enzyme deficiency caused by pancreatic insufficiency.
D. Decrease food intake: Reducing food intake does not treat pancreatic insufficiency and can lead to malnutrition. The goal is to support normal digestion and nutrient absorption through enzyme replacement.