A nurse is caring for a patient with chronic obstructive pulmonary disease (COPD) who has been prescribed a combination inhaler containing a long acting beta2-agonist (LABA) and an inhaled corticosteroid (ICS). Which therapeutic effect should the nurse expect from this medication?

A. Scopolamine.: Scopolamine is an anticholinergic primarily used to prevent motion sickness or postoperative nausea related to anesthesia. It is not the preferred agent for chemotherapy-induced nausea and vomiting because it does not target serotonin receptors involved in chemotherapy-related emesis.

B. Metoclopramide.: Metoclopramide is a prokinetic and antiemetic that enhances gastric motility and is sometimes used for mild to moderate nausea. However, it is less effective against the severe nausea caused by chemotherapy and may cause extrapyramidal side effects

C. Methylcellulose.: Methylcellulose is a bulk-forming laxative used to treat constipation by increasing stool volume and water content. It has no antiemetic properties and would not be useful in preventing chemotherapy-related nausea or vomiting.

D. Ondansetron.: Ondansetron is a serotonin 5-HT3 receptor antagonist that effectively prevents chemotherapy-induced nausea and vomiting. Administering it 30–60 minutes before treatment blocks serotonin release from the gastrointestinal tract, reducing nausea severity.

A. The client might experience constipation.: Constipation is not a common side effect of rifampin which primarily affects liver function and body fluid coloration, not bowel motility, so constipation would likely be due to other factors rather than this medication.

B. The client might see black-colored stools.: Rifampin does not cause black stools; black stools are more commonly associated with gastrointestinal bleeding or iron supplementation. The nurse should teach the client to report dark, tarry stools as they could indicate bleeding.

C. The medication may stain the teeth.: Rifampin does not discolor teeth. Unlike drugs such as tetracyclines, which can cause permanent dental staining, rifampin primarily alters the color of body fluids but not enamel or oral structures.

D. The client's urine might turn a red/orange color.: Rifampin commonly causes red-orange discoloration of body fluids, including urine, saliva, sweat, and tears. This is a harmless but expected effect of the drug, and clients should be informed beforehand to prevent alarm and avoid staining contact lenses or clothing.